CN102783086B - Electronic appliance, and operation setting method for electronic appliance - Google Patents
Electronic appliance, and operation setting method for electronic appliance Download PDFInfo
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- CN102783086B CN102783086B CN201180012371.6A CN201180012371A CN102783086B CN 102783086 B CN102783086 B CN 102783086B CN 201180012371 A CN201180012371 A CN 201180012371A CN 102783086 B CN102783086 B CN 102783086B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1069—Session establishment or de-establishment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/45—Network directories; Name-to-address mapping
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L2101/00—Indexing scheme associated with group H04L61/00
- H04L2101/30—Types of network names
- H04L2101/385—Uniform resource identifier for session initiation protocol [SIP URI]
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- Data Exchanges In Wide-Area Networks (AREA)
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Abstract
Disclosed is a method which allows the remote operation setting of an electronic appliance having an unknown IP address without expanding the existing communications protocol. A communication session is established between a relay device (30A), which is the origin of the operation setting, and a relay device (30B), which is on the side receiving the operation setting, via a session initiation protocol (SIP) server (40) using a procedure which complies with an SIP. The relay device (30A) establishes a telnet connection with the relay device (30B) using the IP address of the relay device (30B) which is acquired in the communication session establishment step as a destination address, and carries out the operation setting.
Description
Technical field
The present invention relates to a kind of technology of carrying out the action setting of electronic equipment, especially, relate to a kind of long-range technology of carrying out action setting.
Background technology
In enterprise etc., usually by LAN(Local Area Network in the site of setting up in each sites such as branch company) be connected to each other, and build the information system of whole company.Current, from the angle guaranteeing sufficient communication speed and fail safe, in each site, being connected to each other of LAN adopts private line access mostly.But, in recent years, via relays such as routers, LAN in each site to be connected with general wide area network (such as the Internet) and the situation building information system becomes very general.Its reason is, there is the erection of special line and maintains the problem of the huge expense of management cost, and, along with optical communication and VPN(Virtual Private Network) universal, can carry out at a high speed and the data communication of high security via general wide area network.In the mode that LAN in site is connected with general wide area network by use relay as noted above, need the action setting suitably carrying out relay in advance.Here, the action setting of so-called relay, the various parameters used during such as, linking objective and VPN for setting VPN connect, for determining the data setting etc. of the object data bag carrying out filtering.
Current, the action as relay sets, and normally by being connected to by serial console as on the relay of setting object, carrying out order input carry out via this serial console.But in this fashion, the technical staff (such as network manager) carrying out this setting operation must hurry to the setting place of the relay as setting object to carry out this action setting, brings inconvenience.In addition, as long as although be aware of the IP(Internet Protocol of the relay as setting object) address, just can pass through telnet(Telecommunication network) etc. this relay of Telnet and carry out action setting, but always might not be aware of (or can obtain) IP address as the relay of setting object.Therefore, propose the various technology can carrying out long-range action setting to the blind electronic equipment of IP, as an one example, the technology disclosed in patent documentation 1 can be enumerated.
Patent Document 1 discloses following technology, that is, carry out based on SIP(Session Initiation Protocol with so-called information household appliances etc.) communication, to realize long-range maintenance to the electronic equipment for realizing equipment inherent function.Here, so-called SIP is one of communication protocol of application layer, is for the session control protocol realizing setting up with IP phone etc. for the communication session of the bidirectional real-time of representative, changing, terminate.In SIP, usually in the blind situation of IP of electronic equipment setting up target as communication session, carry out the sending/receiving of communication information (INVITE etc. of the order of communication session is set up in the request of being written with) via sip server.In addition, so-called sip server refers to as identifier (namely, the mailing address of the upper layer higher than IP) " SIP URI(Uniform Resource Identifier) " and be stored as positional information in couples as the IP address of mailing address, and use this positional information to carry out the computer installation of relaying to communication information, wherein, this " SIP URI " as identifier, for identifying electronic equipment uniquely in SIP, this IP address as mailing address is used for identifying this electronic equipment uniquely in the network layer more the next than SIP.In the technology disclosed in patent documentation 1, SIP is expanded, with can to the order (GetLog etc. for realizing long-range maintenance, with reference to patent documentation 1 0040th ~ 41 sections) send/receive, utilize the SIP after this expansion, the operating terminal of the various orders of operating and setting from long-range maintenance is sent to the electronic equipment as action setting object, and is carried out explanation and the execution of this order by this electronic equipment.Thus, even if the IP address insufficient of the electronic equipment as action setting object, its long-range action setting can also be realized.
Patent documentation 1: Japanese Unexamined Patent Publication 2006-237996 publication
Summary of the invention
But, in the technology disclosed in patent documentation 1, with the expansion of SIP (such as, add the new traffic message etc. of the order for sending action setting) together, when using sip server, there is not only electronic equipment and must tackle this expansion, sip server also must tackle the problem of this expansion.Its reason is, if sip server does not tackle above-mentioned expansion, then above-mentioned new traffic message is using being discarded as the inappropriate message not meeting SIP specification, can not pass on to its destination address.In addition, in the technology disclosed in patent documentation 1, before the order sending/receiving that action is set, need setting up communication session as between the action setting electronic equipment of object and operating terminal, but there is following problems, that is, when setting up communication session, above-mentioned electronic equipment cannot be made to differentiate, and whether this foundation is for action setting, more fragile in fail safe.
The present invention proposes in view of above-mentioned problem, its object is to, and providing a kind of without the need to expanding existing communication protocol, just can carry out the technology of long-range action setting to the blind electronic equipment of IP.
In order to solve above-mentioned problem, embodiments of the present invention provide a kind of electronic equipment, it is characterized in that, have: control unit, and it makes this electronic equipment perform intrinsic action, and communication unit, it carries out the sending/receiving of communication information via communication network, this electronic equipment has been assigned with the 1st mailing address and the 2nd mailing address, 1st mailing address is used for identifying this electronic equipment when setting up communication session according to predetermined session control protocol with other equipment, 2nd mailing address is used for identifying this electronic equipment in the protocol layer more the next than described session control protocol, described control unit is configured to execution the 1st and processes and the 2nd process, in the 1st process, be described communication session is set up in request request message according to described session control protocol receiving content via described communication unit, and this request message is written with the identifier being intended to ask to allow to perform long-range action setting in source body portion, taking this as an opportunity, generating content is the permission response message allowing to set up described communication session, and described 2nd mailing address of this electronic equipment is distributed in write in the source body portion of permission response message, then to the transmission source loopback of described request message, in the 2nd process, when receiving described 2nd mailing address distributing to this electronic equipment via described communication unit as when sending the communication information containing order of destination address, taking this as an opportunity, the control specified is carried out according to this order.In addition, as other execution mode of the present invention, a kind of program making computer installation perform above-mentioned 1st process and the 2nd process is also provided.
According to above-mentioned electronic equipment, set up in the process of communication session in session control protocol according to the rules, ask the request source (transmission source of above-mentioned request message) setting up this communication session can obtain the 2nd mailing address (such as IP address) of above-mentioned electronic equipment.By the 2nd mailing address that will obtain as mentioned above as transmission target, send the communication information being written with action setting order, thus realization sets for the long-range action of above-mentioned electronic equipment.In the electronic equipment accepting action setting side, by to whether being written with above-mentioned identifier in the source body portion of request message differentiating, thus can before communication session is set up, to being whether that the request of setting up the communication session set for long-range action differentiates.In addition, in source body portion, write some data this point, do not belong to the change of message format, also do not belong to additional new traffic message, therefore, above-mentioned session control protocol is not expanded.Therefore, according to the present invention, just can realize carrying out long-range action setting to the blind electronic equipment of IP without the need to carrying out expansion to existing communication protocol.
Also following electronic equipment can be obtained, namely, on the basis of aforesaid way, also there is memory cell, it prestores the action regulation parameter of the intrinsic action for specifying this electronic equipment, described control unit makes this electronic equipment specify that parameter performs intrinsic action according to described action, in described 2nd process, receive containing when indicating the described action of rewriting to specify the communication information of the order of parameter via described communication unit, taking this as an opportunity for described control unit, according to this order, the action regulation parameter be stored in described memory cell is rewritten.
In addition, also following electronic equipment can be obtained, namely, on the basis of aforesaid way, in described memory cell, store representing that the long-range action setting whether allowing long-range action to set could indicate as one of described action regulation parameter, or separate with described action regulation parameter and store, described control unit only stores described long-range action setting when could indicate in described memory cell, to receive described request message for permission response message described in opportunity and loopback.
In preferred mode, the control unit of above-mentioned electronic equipment also can in described 2nd process, whether establish described communication session between transmission source that described action specifies the communication information of the order of parameter judged rewriting containing instruction, only when establishing described communication session, rewrite described action regulation parameter according to the order contained in this communication information.According to this mode, even if when achieving above-mentioned 2nd mailing address wrongly when not setting up communication session, also can prevent from using the 2nd mailing address to carry out the long-range action setting of electronic equipment.
In preferred mode, also can in the memory cell of described electronic equipment, store the session management table for logging in the mailing address setting up target of communication session, described control unit performed the 3rd process before described 2nd process, and, timing have passed through the stipulated time the moment of the write of the mailing address from the transmission source of carrying out confirmation response after, perform the 4th process of deleting this mailing address from described session management table, wherein, in the 3rd process, when the transmission target of described permission response message sent from described 1st process receive expression received confirmation response (the so-called ACK) of this permission response message, taking this as an opportunity, and set up communication session between this transmission target, the mailing address of the transmission source of this confirmation response is write in described session management table, described control unit is in described 2nd process, when having logged in the mailing address of the transmission source of described communication information in described session management table, be judged to establish communication session between the transmission source of described communication information.According to this mode, even if there is the attack of similar so-called SYN overflow, also can suitably tackle.In addition, detailed content clearly states in the explanation of variation of the present invention.
In addition, in other modes of the present invention, a kind of action establishing method of electronic equipment is provided, this electronic equipment has been assigned with the 1st mailing address and the 2nd mailing address, 1st mailing address is used for identifying this electronic equipment when setting up communication session according to predetermined session control protocol with other equipment, 2nd mailing address is used for identifying this electronic equipment in the protocol layer more the next than described session control protocol, this electronic equipment has the function via communication network sending/receiving communication information, and there is the function performing intrinsic action, the feature of the action establishing method of this electronic equipment is, comprise following step, that is: the 1st step, in this step, the operating terminal generating content be connected on described communication network is communication session is set up in request request message according to described session control protocol, and write is intended to the identifier asking to allow to perform long-range action setting in the source body portion of request message, then send to described electronic equipment, 2nd step, in this step, receive the described electronic equipment of the described request message of sending from described operating terminal, generating content is the permission response message allowing to set up communication session, and in the source body portion of permission response message, described 2nd mailing address of this electronic equipment is distributed in write, then to described operating terminal loopback, 3rd step, in this step, receive the described operating terminal of the permission response message of sending from described electronic equipment, using described 2nd mailing address in the source body portion being written in this permission response message as transmission destination address, send the communication information containing particular command, and the 4th step, in this step, receive the described electronic equipment of the described communication information sent from described operating terminal, carry out the control specified according to described order.
Accompanying drawing explanation
Fig. 1 is the figure representing the structure example comprising an execution mode of electronic equipment of the present invention and the communication system 1 of relay 30A and 30B.
Fig. 2 is the block diagram of the structure example representing relay 30.
Fig. 3 is the flow chart of the flow process of the communication session management process performed by control part 310 representing this relay 30.
Fig. 4 is the flow chart of the flow process representing this action setting process performed by control part 310.
Fig. 5 is the figure of an example of the communication sequential represented in communication system 1.
Fig. 6 is the figure of an example of the communication sequential represented in communication system 1.
The explanation of symbol
10 ... general wide area network, 20A, 20B ... LAN in site, 30,30A, 30B ... relay, 310 ... control part, 320 ... 1st communication I/F portion, 330 ... 2nd communication I/F portion, 340 ... external equipment I/F portion, 350 ... storage part, 352 ... volatile storage portion, 354 ... non-volatile memories portion, 360 ... bus, 40 ... sip server, 50 ... operating terminal.
Embodiment
Below, with reference to accompanying drawing, embodiments of the present invention are described.
(A: structure)
Fig. 1 is the figure representing the structure example comprising an execution mode of electronic equipment of the present invention and the communication system 1 of relay 30A and 30B.This communication system 1 is LAN 20A and 20B in site in FIG by LAN(in the site of such as setting up in each site of enterprise) be connected with general wide area network 10 and form.General wide area network 10 is such as the Internet, is the communication network jointly utilized by nonspecific many people.As shown in Figure 1, general wide area network 10 is connected with sip server 40.As noted above, sip server 40 is stored as positional information in couples " SIP URI " and IP address, uses this positional information to carry out the computer installation of relaying to the communication information that send/receive based on SIP.For this sip server 40, due to compared with existing sip server without any difference, so detailed.
In site, LAN 20A is connected with general wide area network 10 via relay 30A, and in site, LAN 20B is connected with general wide area network 10 via relay 30B.Relay 30A and 30B is such as router, is assigned with intrinsic IP address respectively.In the present embodiment, relay 30A and 30B has identical structure.Therefore, below when not needing to distinguish separately relay 30A and 30B, be expressed as " relay 30 ".Relay 30 has for the communicator connected as LAN in the site of its linking objective and other communicators (such as, the communicator be connected with general wide area network 10 or the communicator be connected with LAN in other sites) between, the data packet communication carried out according to IP is carried out to the function of relaying.In addition, relay 30A and 30B has been assigned with intrinsic " SIP URI " respectively, also has according to the step based on SIP the function setting up communication session between other communicators.Further, the IP address of being somebody's turn to do " SIP URI " and distributing to relay 30 is logged in (record) in couples in sip server 40 as positional information.
In site, LAN 20A is connected with operating terminal 50.This operating terminal 50 is such as personal computer, is provided with telnet client-side program in advance.So-called telnet client-side program is the program for realizing Telnet (telnet connection).The user interface that the user of operating terminal 50 provides via telnet client-side program, can carry out the appointment (such as assigning remote logs in the IP address etc. of target) to the electronic equipment as Telnet target and input the various orders sent to this electronic equipment.The orders of input described above etc. are sent to the electronic equipment as its linking objective via telnet.In the present embodiment, by utilizing this telnet client-side program Telnet to relay 30, and send the order (hereinafter referred to as action setting order) of action setting, thus realize the long-range action setting of relay 30.In addition, also can be connected in series with relay 30A by operating terminal 50, perform the telnet client-side program on relay 30A and carry out telnet with relay 30B and be connected.In addition, in FIG, be illustrated the situation that 1 operating terminal 50 is connected with LAN 20A in site, but in site, LAN 20A also can also be connected with multiple communicator except operating terminal 50, in the same manner, in site, LAN 20B also can be connected with multiple communicator.
In the present embodiment, the user of operating terminal 50 belongs to (that is, being connected in same site on LAN 20A) relay 30A of the same network segment for operating terminal 50, in advance both known " SIP URI " and IP address, but for relay 30B, only known " SIP URI ".Therefore, operating terminal 50 cannot be carried out telnet with relay 30B and be connected by the user of operating terminal 50, looks that the long-range action cannot carrying out relay 30B sets.But relay 30 is configured to, even if IP address insufficient, as long as known " SIP URI " just can carry out long-range action setting, this point is the feature of present embodiment.Below, be described centered by the feature of present embodiment and relay 30.
Fig. 2 is the block diagram of the structure example representing relay 30.
As shown in Figure 2, relay 30 comprises control part 310, the 1st communication I/F portion 330 of communication interface (hereinafter referred to as I/F) portion the 320, the 2nd, external equipment I/F portion 340, storage part 350 and the data sending/receiving between above-mentioned inscape is carried out to the bus 360 of relaying.
Control part 310 is such as CPU(Central Processing Unit).This control part 310, by performing storage part 350(more precisely, is non-volatile memories portion 354) the middle program (firmware) stored, thus realize the effect of each several part of relay 30 being concentrated to the control unit carrying out action control.For the detailed content of the process of control part 310 performed by firmware, clearly describe later.
The 1st I/F portion 330 that communicates with the 2nd of communication I/F portion 320 is NIC(Network Interface Card), connect from different communication networks respectively.Specifically, the 2nd communication I/F portion 330 is all connected with general wide area network 10 in relay 30A with 30B.On the other hand, the 1st communication I/F portion 320 of relay 30A is connected with LAN 20A in site, and the 1st communication I/F portion 320 of relay 30B is connected with LAN 20B in site.Communication information (is split with predetermined data size by the 1st I/F portion 330 that communicates with the 2nd of communication I/F portion 320 by the packet received from respective linking objective communication network, and the communication information after segmentation is added respectively the data head of regulation and the data block that obtains) send to control part 310, and the packet sent from control part 310 is sent to respective linking objective communication network.Namely, 1st communication I/F portion 320 realizes carrying out the effect of the communication unit of the sending/receiving of communication information via as LAN in the site of its linking objective, and the 2nd communication I/F portion 330 realizes the effect carrying out the communication unit of the sending/receiving of communication information via general wide area network 10.
External equipment I/F portion 340 be with exterior storage medium (such as, USB(Universal Serial Bus) memory etc.) or the external equipment such as serial console between according to the rules agreement (USB or RS-232C) carry out the aggregate of the interface of data sending/receiving.Such as, when using USB storage as external equipment, as long as make to comprise USB interface in external equipment I/F portion 340, when using serial console as external equipment, as long as make to comprise the serial line interfaces such as RS-232C interface in external equipment I/F portion 340.In the blind situation of the IP of relay 30B, in the prior art, outside equipment I/F portion 340 connects serial console and carries out action setting, but in the present embodiment, by the data communication carried out via linking objective and the general wide area network 10 in the 2nd communication I/F portion 330, the action setting (i.e. long-range action setting) of relay 30B can be carried out.
Storage part 350 comprises volatile storage portion 352 and non-volatile memories portion 354.Volatile storage portion 352 is such as RAM(Random Access Memory) etc. volatile memory, be used as working region when control part 310 performs firmware.In addition, in volatile storage portion 352, go back store session management table, wherein log in the mailing address having the electronic equipment establishing communication session between relay 30.For carrying out the login of mailing address and the timing (timing) of deletion in this session management table, clearly describe in action case.
Non-volatile memories portion 354 is such as EPROM(Erasable Programmable Read Only Memory) etc. nonvolatile memory.In this non-volatile memories portion 354, except firmware, be also previously stored with various data.As an example of the data be stored in non-volatile memories portion 354, as shown in Figure 2, action regulation parameter can be enumerated.So-called action regulation parameter is the parameter of the intrinsic action of regulation relay 30.Specify to comprise in parameter in the action of present embodiment: the parameter (omitting diagram) of the action (that is, the action in relaying data packets process) that regulation relay 30 carries out as relay and long-range action setting could indicate.
Such as, as the parameter specified the intrinsic action in packet relay process, the parameter (parameter such as, used in coded communication) used in the linking objective address of VPN and this connection, the parameter etc. determining the packet as filtering object can be enumerated.Above-mentioned parameter is also referred to as configuration of routers.By rewriting this configuration of routers, the action of the relaying data packets process performed by relay 30 can be changed.On the other hand, long-range action setting could mark be boolean's data (in the present embodiment, the data with any one value in " 1 " or " 0 "), if this value is " 1 ", then represent and allow to perform long-range action setting, if this value is " 0 ", then represents and do not allow to perform long-range action setting.Could indicate for this long-range action setting, also " 1 " or " 0 " can be set in advance as when the factory shipment of relay 30, accordingly this value is rewritten with the instruction sent from the serial console be connected in external equipment I/F portion 340, or, set by long-range action and this value rewritten.Be rewritten as " 1 " (or being rewritten as " 0 " from " 1 ") by indicating this long-range action setting from " 0 ", thus change and whether permit that performing long-range action sets relevant setting.In addition, in the present embodiment, in action regulation parameter, contain long-range action setting mark, but also only configuration of routers can be specified parameter as action, separately long-range action setting mark is stored in non-volatile memories portion 354 outside this action regulation parameter.
The firmware stored in non-volatile memories portion 354 as shown in Figure 2, is the program for making control part 310 perform packet relay process, communication session management process and action setting process.If connect the power supply (omitting diagram) of relay 30, then above-mentioned firmware reads out to volatile storage portion 352 from non-volatile memories portion 354 by control part 310, and starts to perform this firmware.The relaying data packets process performed according to firmware by control part 310 specifies that parameter carries out the process of the intrinsic action of router such as the foundation of VPN and the relaying of packet according to action.For this relaying data packets process, due to the process in common relay without any difference, so detailed.
Fig. 3 is the flow chart of the flow process representing the communication session management process that control part 310 performs according to firmware, and Fig. 4 is the flow chart of the flow process representing the action setting process that control part 310 performs according to this firmware.Communication session management process be when from other electronic equipments to set up communication session based on the steps request of SIP, determine the process could setting up communication session.On the other hand, so-called action setting process refers to, when connecting from other electronic equipment requests telnet, determine to carry out telnet connection, and when permitting telnet to connect, according to the action setting order that the electronic equipment from the linking objective connected as telnet sends, action regulation parameter is rewritten.The feature of present embodiment is above-mentioned communication session management process and action setting process.For the detailed content of above-mentioned communication session management process and action setting process, clearly describe in action case in order to avoid repetition.
It is more than the structure of relay 30.
(B: action)
Below, the operation management personnel of communication system 1 are operated operating terminal 50 and the situation of action setting is carried out as an example to relay 30B, the action of relay 30 is described.In addition, in the action case of following explanation, " the SIP URI " that distribute to relay 30A is set to sip:xxx@aaa, " the SIP URI " that distribute to relay 30B is set to sip:yyy@bbb.
(B-1: when be set as allowing action when performing long-range action setting)
First, set the value that could indicate as the situation of " 1 " to the long-range action stored in the non-volatile memories portion 354 of relay 30B to be described.Operating terminal 50 is operated and to carry out relay 30B action setting user, on operating terminal 50, first start telnet client-side program, Telnet is on relay 30A.Then, send instruction to relay 30A, its content is carry out long-range action setting to the electronic equipment (i.e. relay 30B) that " SIP URI " is sip:yyy bbb.In addition, in this action case, describe Telnet to relay 30A and send the situation that content is instruction relay 30B being carried out to long-range action setting, but can certainly be connected in series and send this instruction with relay 30A by operating terminal 50.
Fig. 5 is the figure of an example of the communication sequential represented in communication system 1.Receive the control part 310 that content is the relay 30A of the instruction carrying out above-mentioned long-range action setting, generate and " SIP URI " (i.e. the sip:yyy bbb) indicated by user is set up request message (Fig. 5: INVITE) as the communication session setting up target of communication session, in its source body portion, write is intended to ask allow the identifier of the long-range action setting of execution (being " remote setup " this character string in this action case) and send.Like this, the communication session sent from relay 30A sets up request message as shown in Figure 5, is received by sip server 40.In addition, set up at above-mentioned communication session in the source body portion of request message and be written with the distinctive identifier of present embodiment, but will neither belong to the change of message format in above-mentioned identifier write source body portion, in addition, additional new traffic message (that is, not belonging to the expansion of SIP) is not belonged to yet.Therefore, the communication session being written with above-mentioned identifier in source body portion is set up request message and can not be gone out of use in sip server 40.
As shown in Figure 5, if sip server 40 receives above-mentioned communication session set up request message, then to relay 30A loopback communication information (Fig. 5: " 100 Trying "), notify process just in commission this situation corresponding with this request.Then, sip server 40 is with reference to the positional information logged in this device, determine to set up in request message with above-mentioned communication session the IP address that " the SIP URI " that set up target that be appointed as communication session is corresponding, and set up request message with this IP address for target passes on above-mentioned communication session.Thus, above-mentioned communication session is set up request message to pass on to relay 30B.If the control part 310 of relay 30B receives above-mentioned communication session via the 2nd communication I/F portion 330 and sets up request message, then loopback communication information (Fig. 5: " 100 Trying ") is to notify the process corresponding with this request just in commission this situation, and the process of executive communication session management.
Fig. 3 is the flow chart of the flow process representing communication session management process.As shown in Figure 3, whether first the control part 310 of relay 30B sets up request message to the communication session received is that request allows the long-range action setting of execution to judge (step SA100) asking to set up communication session while.Specifically, control part 310 is resolved the source body portion that the communication session received sets up request message, determines whether the identifier (being " remote setup " this character string in the present embodiment) being written with regulation.When being written with this identifier, it is the message that request allows to perform long-range action setting that control part 310 is judged to be that this communication session sets up request message.
When the result of determination of step SA100 is "No", if relay 30 has the function relevant to audio communication such as voice over ip feature, then control part 310 performs and receives common communication session and set up the identical process (Fig. 3: common SIP process) (step SA110) of the situation of request message.Be such as following process, that is, make display unit etc. show and represent the identifier (being such as " SIP URI ") that communication session sets up the transmission source of request message, could communication session be set up to user's query.On the other hand, when the result of determination of step SA100 is "Yes", control part 310 performs the later process of step SA120.As noted above, in this action case, set up in the source body portion of request message at the communication session sent from relay 30A, be written with the identifier of regulation.Therefore, the result of determination of step SA100 is "Yes", performs the process that step SA120 is later.
The process of step SA120 is confirmed whether to be set as that permission performs the process of long-range action setting by control part 310.Specifically, if the long-range action stored in non-volatile memories portion 354 set the value that could indicate for " 1 ", then control part 310 is judged to be set to and allows the long-range action of execution to set.On the contrary, if long-range action sets the value that could indicate as " 0 ", then control part 310 is judged to be set to and does not allow to perform long-range action setting.When the result of determination of step SA120 is "No", control part 310 loopback content is the refusal response message (being such as 406 Not Acceptable) (step SA130) that refusal sets up communication session, terminates the process of this communication session management.On the contrary, when the result of determination of step SA120 is "Yes", perform the process that step SA140 is later.In this action case, because the long-range action stored in the non-volatile memories portion 354 of relay 30B sets the value that could indicate as " 1 ", so the result of determination of step SA120 is "Yes", perform the process that step SA140 is later.
The process of the process of step SA140 to be loopback content the be permission response message (Fig. 5: " 200OK ") allowing to set up communication session.When this permission response message of loopback, the control part 310 of relay 30B by the IP address distributing to this device and accept the communication port that telnet connects port numbers in the form of text according to SDP(Session Descript Protocol) write loopback after in source body portion.Then, if the control part 310 of relay 30B completes the transmission of above-mentioned permission response message, then wait-receiving mode is from the confirmation response (i.e. ACK) (Fig. 3: step SA150) of the transmission target loopback of permission response message.In addition, when accept telnet connect communication port be so-called well-known port (well-known ports), its port numbers can be omitted.
In the manner described above from the permission response message that relay 30B sends, as shown in Figure 5, relay 30A is arrived through sip server 40.Receive the control part 310 of the relay 30A of this permission response message, the IP address be written in the source body portion of this permission response message and port numbers are read, store as the long-range action target setting information representing long-range action target setting, and for use operating terminal 50, Telnet is to the user in relay 30A, and this situation has been set up in reporting communications session.Then, control part 310 loopback of relay 30A using the IP address that comprises in long-range action target setting information as transmission destination address and using the confirmation response (Fig. 5: ACK) of the IP address of this device as transmission source address.Like this, from the confirmation response of relay 30A loopback, in general wide area network 10, arrived relay 30B by suitably carrying out route.If the control part 310 of relay 30B receives above-mentioned confirmation response (Fig. 3: step SA 150, be), then this transmission source address is logged in (Fig. 3: step SA160) in session management table as the mailing address setting up target representing communication session, terminate the process of this communication session management.
If the user of operating terminal 50 is according to above-mentioned report, the communication session confirmed between relay 30A and relay 30B has set up this situation, then send instruction to relay 30A, telnet connection is carried out to the linking objective shown in long-range action target setting information.Control part 310 generating content receiving the relay 30A of above-mentioned instruction is the communication information that request telnet connects, and makes the IP address shown in target setting information and port numbers for target with above-mentioned long distance moving and send.In this communication information, be written with the mailing address of relay 30A as transmission source address, be written with the mailing address shown in above-mentioned long-range action target setting information as transmission destination address.Like this, the communication information sent from relay 30A is suitably carried out route in general wide area network 10, without the need to just arriving the electronic equipment (i.e. relay 30B) with above-mentioned long-range action target setting address via sip server 40.
Fig. 4 represents when receiving foregoing and being the communication information of request telnet connection, the flow chart of the flow process of the action setting process performed by control part 310 of relay 30B.As shown in Figure 4, whether established communication session between the transmission source of control part 310 first to above-mentioned communication information to judge (step SB100).Specifically, when the transmission source address of above-mentioned communication information has logged in session management table, control part 310 has been judged to establish communication session between the transmission source of above-mentioned communication information, on the contrary, when above-mentioned transmission source address does not log in session management table, be judged to be do not have to set up communication session between above-mentioned transmission source.
As shown in Figure 4, control part 310, only when the result of determination of step SB100 is "Yes", carries out telnet connection (step SB110) to the transmission source of above-mentioned communication information, then, performs the order of sending from this linking objective.As noted above, when have sent above-mentioned communication information from relay 30A to relay 30B, the mailing address of relay 30A has logged in the session management table of relay 30B.Therefore, in this action case, the result of determination of step SB 100 becomes "Yes", performs the process of step SB110.Then, various action setting order sends to relay 30B via relay 30A by the user of operating terminal 50, makes the control part 310 of relay 30B carry out explanation and the execution of these action setting orders.Thus, the action regulation parameter of relay 30B is rewritten according to above-mentioned action setting order, realizes the long-range action setting of relay 30B.
In addition, if the long-range action of relay 30B has set, then the user of operating terminal 50 has sent the instruction cut off telnet and connect to relay 30A, and, the instruction cutting off communication session is sent to relay 30A.Like this, control part 310 generating content of relay 30A is that the communication session that communication session cuts off by notice cuts off notification message (Fig. 5: BYE), and sends to relay 30B.If the control part 310 of relay 30B receives above-mentioned communication session and cuts off notification message, then loopback confirmation response (Fig. 5: ACK), and above-mentioned communication session is cut off the transmission source address of notification message from session management list deletion, thus complete the cut-out of communication session.
More than when being set as relay 30B allowing action case when performing long-range action setting.
(B-2: when be set as not allowing action when performing long-range action setting)
Below, set the value that could indicate as the situation of " 0 " to the long-range action stored in the non-volatile memories portion 354 of relay 30B to be described.When long-range action sets the value that could indicate as " 0 ", even if send from relay 30A the communication session being written with regulation identifier source body portion to set up request message, the result of determination of above-mentioned steps SA120 also becomes "No", refuses response message (with reference to Fig. 6) from relay 30B to relay 30A loopback.Therefore, between relay 30A and relay 30B, do not set up communication session, also do not notify the IP address of relay 30B to relay 30A.Further, owing to not setting up communication session, so also do not log in the IP address of relay 30A in the session management table of relay 30B.
Here, assuming that the user of operating terminal 50 is by obtaining the IP address of relay 30B someway wrongly, and this IP address is attempted carrying out telnet connection as transmission destination address.Attempt telnet wrongly even if as noted above to connect, also owing to not logging in the mailing address of relay 30A in the session management table of relay 30B, so the result of determination of above-mentioned step SB100 becomes "No".Therefore, relay 30A and relay 30B can not be made to carry out telnet and to be connected, the action setting of relay 30B can not be carried out via relay 30A.As noted above, if long-range action is set the value that could indicate be set to " 0 ", then can not set up communication session between relay 30A and relay 30B, owing to permitting that telnet connects to set up this situation of communication session as condition, even if so obtain the IP address of relay 30B wrongly, also can reliably prevent following situation, namely, being undertaken by utilizing this IP address being connected with the wrongful telnet of relay 30B, carrying out long-range action setting.
As described above, according to the present embodiment, the relay 30 that the value that could indicate is set as " 1 " is set, even if its IP address insufficient for long-range action, also can obtain IP address in the process setting up communication session based on the step of SIP, perform long-range action setting.In addition, in the present embodiment, by writing the identifier of regulation in the source body portion that sets up request message at communication session, thus be shown to be the foundation request of the communication session set for long-range action, the situation writing data in source body portion and additional newer command or to change message format different, do not expand SIP.That is, according to the present embodiment, just long-range action setting can be carried out to the blind relay of IP without the need to carrying out SIP expansion.
(C: distortion)
Above an embodiment of the invention are illustrated, but the distortion of the following stated can certainly be applied.
(1) in the above-described embodiment, describe from operating terminal 50 Telnet relay 30A, this relay 30A is operated and carries out the situation (that is, operating terminal 50 and relay 30A situation about working as the operating terminal for carrying out action setting to relay 30B) of the long-range action setting of relay 30B.But, also can direct with the step based on SIP from operating terminal 50 to after relay 30B establishes communication session, carry out telnet connection and implement above-mentioned long-range action setting.
(2) in the above-described embodiment, situation about being applied in the action setting of router for the present invention is illustrated, but can certainly apply the present invention in the action setting of gateway apparatus.In addition, application of the present invention is not limited to the action setting of the relay such as router or gateway apparatus, also can be applied to Web server, application server etc. and be positioned at the communicator of endpoint node and the action setting of so-called information household appliances.Importantly, as long as have the function of the intrinsic action carried out based on action regulation parameter, and have set up the function of communication session based on the step of SIP and carry out the electronic equipment of the function communicated based on telnet, just the present invention can be applied in its action setting (that is, action specifies the rewriting of parameter).
(3) in the above-described embodiment, employ SIP as the communication protocol for setting up communication session, but also can use other session control protocols.Importantly, as long as can for the session control protocol setting up target and obtain the mailing address (such as IP address) of the next protocol layer in the process of establishing of communication session.In addition, in the above-described embodiment, employ telnet as carrying out for the communication protocol of the order sending/receiving of action setting, but also can use other communication protocols.Such as also can utilize HTTP(HyperText Transfer Protocol) POST method, send the action setting command that should perform and the parameter that should set.
(4) in the above-described embodiment, set up communication session with the step based on SIP, be only limitted to during establishing this communication session, allow to carry out telnet connection to the target of setting up of this communication session, thus carry out long-range action setting.In this fashion, it can be also 1 by the restricted number can setting up the operating terminal of the communication session that long-range action sets with relay 30, with the conflict avoiding long-range action to set.Specifically, as long as when the foundation request of communication session again sending long-range action setting for the relay 30 of communication session establishing long-range action setting, this process of the request source unconditionally loopback refusal response message control part 310 of this relay 30 being performed ask to this foundation.In addition, also can be the mode allowing to set up with multiple operating terminal the communication session that long-range action sets, but in this fashion, preferably make control part 310 perform the process of this communication session of timing turning off from the moment establishing communication session after certain hour.This is the attack in order to tackle similar so-called SYN overflow.
So-called SYN overflow is the weakness that is step established a communications link in a kind of TCP of utilization shakes hands for 3 times, and communicator is absorbed in cannot the attack method of this state of action.As the attack method of the similar SYN overflow carried out for relay 30, there is following method: set up communication session to relay 30 request, even if this foundation completes, also do not carry out telnet connection but place paying no attention to, then, alter operation terminal mailing address and continue request and set up communication session.Set up in the mode of the communication session that long-range action sets at permission and multiple operating terminal, if relay 30 does not have the function at this communication session of timing turning off from setting up communication session after certain hour, then when carrying out the attack of similar SYN overflow to this relay 30, in session management table, continue the mailing address setting up target adding logging on communication session, finally cause and overflow and cannot action be carried out.On the other hand, if be provided with the function at the timing turning off communication session from setting up communication session after certain hour, even if then carried out the attack of similar SYN overflow, the mailing address logged in session management table also can start after certain hour deleted in its login, therefore, above-mentioned spilling can not be produced, can not cause carrying out action.
(5) in the above-described embodiment, when long-range action sets the value that could indicate as " 1 ", unconditionally to control part 310 loopback permission response message.But, also can be formed as, even if when receiving the communication session being written with regulation identifier in source body portion and set up request message and long-range action setting the value that could indicate as " 1 ", also can not unconditionally loopback permission response message, but only when this communication session set up request message be send from predetermined electronic equipment, just loopback permission response message.Specifically, the IP address (or " SIP URI ") that can perform the electronic equipment of long-range action setting to relay 30B is logged in advance in relay 30B, only when the transmission source address that the communication session received sets up request message is above-mentioned IP address (or " SIP URI "), control part 310 is just made to perform the process of loopback permission response message.
In addition, also can only when connecting from the communicator request telnet with predetermined mailing address, just allow this connection, in this fashion, also can be formed as, whether establish communication session between the request source be connected with this telnet, all allow to carry out telnet connection.Its reason is, in this fashion, the request source set due to long-range action is pre-limited, so the possibility of carrying out wrongful long-range action setting is less.In addition, as the concrete grammar that the communicator allowing telnet to connect is logged in advance, the mailing address of the communicator allowing telnet to connect is stored in advance in the mode in non-volatile memories portion 354 by existence, or the mailing address of the communicator at least establishing 1 communication session is stored in the mode etc. in non-volatile memories portion 354.
(6) in the above-described embodiment, the user of operating terminal 50 operates this operating terminal 50 and logs in relay 30A, the relay of object is set (in above-mentioned action case using as long-range action, for relay 30B) " SIP URI " be sent to relay 30A, with based on after setting up communication session between the step of SIP and relay 30B, be used in IP address and the port numbers of the relay 30B obtained in this process of establishing, the action setting of relay 30B is carried out in Telnet to this relay 30B separately, after this action setting terminates, the instruction cut off telnet connection and cut off communication session is sent to relay 30A.But, also can make based on the communication session of SIP foundation and cut off automatically carry out.
Specifically, first, in login to relay 30A, the user of operating terminal 50 is made to perform following operation, that is, the telnet bind command (such as open order) using the mailing address (" SIP URI " or telephone number) of the upper layer of the relay (such as relay 30B) as long-range action setting object as parameter is sent to this relay 30A.Such as, when the telephone number of relay 30B is " 053XXXXXXX ", input " open 053XXXXXXX ".On the other hand, the control part 310 of relay 30A is made to perform following process.Namely, the mailing address (being " 053XXXXXXX " in the above example) of the upper layer parameter as telnet bind command (being open order in the above example) provided is as transmission target, communication session is set up with the step based on SIP, be used in IP address and the port numbers of this linking objective obtained in this process of establishing, perform the process (above-mentioned IP address and port numbers being performed the process of telnet order as parameter) carrying out telnet connection to this linking objective.Here, when providing telephone number at the mailing address as upper layer, as long as after " SIP: telephone number@domain " is transformed to " SIP_URI ", uses and be somebody's turn to do the foundation that " SIP_URI " carries out communication session.Further, when the user of operating terminal 50 sends the instruction cutting off telnet connection, make the control part 310 of relay 30A while this cut-out, perform the process cutting off above-mentioned communication session.According to this mode, following effect can be obtained, that is, with the operational ton of the foundation and cut-out for carrying out communication session correspondingly, the operation burden of user is reduced.
(7) in the above-described embodiment, describe the situation that relay 30B that the network segment outside to the network segment belonging to operating terminal 50 has under its command carries out action setting, but also can use operating terminal 50, carry out telnet with the relay 30A of the same network segment of this operating terminal 50 be connected to being subordinated to, and (namely the action carrying out relay 30A sets, could indicate long-range action setting and some in configuration of routers, or both is rewritten), in addition, operating terminal 50 and relay 30A can certainly be carried out connected in series and action that is that carry out relay 30A sets.
(8) in the above-described embodiment, by the program being used for making the control part 310 of relay 30 to perform the process that feature of the present invention is significantly shown, be stored in advance in the storage part 350 of this relay 30.But, also can at such as CD-ROM(Compact Disk-Read Only Memory) etc. write said procedure in the storage medium that can read of computer installation and distribute, in addition, also said procedure can be distributed by carrying out downloading via electric communication line such as the Internets.Its reason is, by the program of distributing as mentioned above is stored in common relay, then, make the control part of this relay carry out action (so-called firmware upgrade) according to this program, thus the function identical with the relay of above-mentioned execution mode can be added to existing relay.
(9) in the above-described embodiment, after Telnet to relay 30B, by sending action setting order, thus the long-range action setting of relay 30B is realized.Now, as action setting order, the action sending instruction relay 30B specifies the order that parameter is rewritten.But in the present invention, the kind of order is not limited to instruction action and specifies the order that parameter is rewritten.Namely, also can by sending instruction firmware to relay 30B and upgrade and obtaining record (statistics, diagnosis, state display), perform the order of particular script (such as Lua script) etc., thus according to the control that the order and carrying out being sent to relay 30B specifies.
Claims (10)
1. an electronic equipment, is characterized in that, has:
Control unit, it makes this electronic equipment perform intrinsic action; And
Communication unit, it carries out the sending/receiving of communication information via communication network,
This electronic equipment has been assigned with the 1st mailing address and the 2nd mailing address, 1st mailing address is used for identifying this electronic equipment when setting up communication session according to predetermined session control protocol with other equipment, 2nd mailing address is used for identifying this electronic equipment in the protocol layer than described session control protocol more lower
Described control unit is configured to execution the 1st and processes and the 2nd process,
In the 1st process, be described communication session is set up in request request message according to described session control protocol receiving content via described communication unit, and this request message is written with the identifier being intended to ask to allow to perform long-range action setting in source body portion, taking this as an opportunity, generating content is the permission response message allowing to set up described communication session, and described 2nd mailing address of this electronic equipment is distributed in write in the source body portion of permission response message, then to the transmission source loopback of described request message
In the 2nd process, when receiving via described communication unit using described 2nd mailing address distributing to this electronic equipment as when sending the communication information containing order of destination address, taking this as an opportunity, carries out the control specified according to this order.
2. electronic equipment according to claim 1, is characterized in that,
Also have memory cell, it prestores the action regulation parameter of the intrinsic action for specifying this electronic equipment,
Described control unit makes this electronic equipment specify that parameter performs intrinsic action according to described action,
In described 2nd process, receive containing when indicating the described action of rewriting to specify the communication information of the order of parameter via described communication unit, taking this as an opportunity for described control unit, rewrites the action regulation parameter be stored in described memory cell according to this order.
3. electronic equipment according to claim 2, is characterized in that,
In described memory cell, could indicate as one of described action regulation parameter store representing that the long-range action whether allowing long-range action set sets, or separate with described action regulation parameter and store,
Described control unit only stores described long-range action setting when could indicate in described memory cell, to receive described request message for permission response message described in opportunity and loopback.
4. the electronic equipment according to Claims 2 or 3, is characterized in that,
In described 2nd process, described control unit pair and whether established described communication session between transmission source that described action specifies the communication information of the order of parameter judge containing indicating to rewrite, only when establishing described communication session, rewrite described action regulation parameter according to the order contained in this communication information.
5. electronic equipment according to claim 4, is characterized in that,
In described memory cell, store the session management table for logging in the mailing address setting up target of communication session,
Described control unit,
The 3rd process was performed before described 2nd process, and, timing have passed through the stipulated time the moment of the write of the mailing address from the transmission source of carrying out confirmation response after, perform the 4th process of deleting this mailing address from described session management table, wherein, in the 3rd process, when the transmission target of described permission response message sent from described 1st process receive expression received the confirmation response of this permission response message, taking this as an opportunity, and set up communication session between this transmission target, the mailing address of the transmission source of this confirmation response is write in described session management table,
In described 2nd process, when having logged in the mailing address of the transmission source of described communication information in described session management table, be judged to establish communication session between the transmission source of described communication information.
6. the action establishing method of an electronic equipment, this electronic equipment has been assigned with the 1st mailing address and the 2nd mailing address, 1st mailing address is used for identifying this electronic equipment when setting up communication session according to predetermined session control protocol with other equipment, 2nd mailing address is used for identifying this electronic equipment in the protocol layer than described session control protocol more lower, this electronic equipment has the function via communication network sending/receiving communication information, and there is the function performing intrinsic action
The feature of the action establishing method of this electronic equipment is,
Comprise following step, that is:
1st step, in this step, the operating terminal generating content be connected on described communication network is communication session is set up in request request message according to described session control protocol, and in the source body portion of request message, write is intended to the identifier asking to allow to perform long-range action setting, then sends to described electronic equipment;
2nd step, in this step, receive the described electronic equipment of the described request message of sending from described operating terminal, generating content is the permission response message allowing to set up communication session, and in the source body portion of permission response message, described 2nd mailing address of this electronic equipment is distributed in write, then to described operating terminal loopback;
3rd step, in this step, receive the described operating terminal of the permission response message of sending from described electronic equipment, using described 2nd mailing address in the source body portion being written in this permission response message as transmission destination address, send the communication information containing particular command; And
4th step, in this step, receives the described electronic equipment of the described communication information sent from described operating terminal, carries out the control specified according to described order.
7. the action establishing method of electronic equipment according to claim 6, is characterized in that,
Described electronic equipment have according to store in the memory unit, the action that specifies intrinsic action specifies parameter and performs the function of intrinsic action,
In described 3rd step, described operating terminal sends rewrites containing instruction the communication information that described action specifies the order of parameter,
In described 4th step, described electronic equipment, according to this order, rewrites the action regulation parameter stored in described memory cell.
8. the action establishing method of electronic equipment according to claim 7, is characterized in that,
In described memory cell, could indicate as one of described action regulation parameter store representing that the long-range action whether allowing long-range action set sets, or separate with described action regulation parameter and store,
In described memory cell, only store described long-range action setting when could indicate, just in described 2nd step, to receive described request message for permission response message described in opportunity and loopback.
9. the action establishing method of the electronic equipment according to claim 7 or 8, is characterized in that,
In described 3rd step, whether establish described communication session between transmission source that described action specifies the communication information of the order of parameter judged rewriting containing instruction,
Only when establishing described communication session, just in described 4th step, rewrite described action regulation parameter according to the order contained in this communication information.
10. the action establishing method of electronic equipment according to claim 9, is characterized in that,
In described memory cell, store the session management table for logging in the mailing address setting up target of communication session,
The 5th step was performed before described 3rd step, and, timing have passed through the stipulated time the moment of the write of the mailing address from the transmission source of carrying out confirmation response after, perform the 6th step of deleting this mailing address from described session management table, wherein, in the 5th step, when the transmission target of the described permission response message sent from described 2nd step receive expression received the confirmation response of this permission response message, taking this as an opportunity, and set up communication session between this transmission target, the mailing address of the transmission source of this confirmation response is write in described session management table,
In described 3rd step, when having logged in the mailing address of the transmission source of described communication information in described session management table, be judged to establish communication session between the transmission source of described communication information.
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| JP2010047597A JP5477056B2 (en) | 2010-03-04 | 2010-03-04 | Electronic device and electronic device operation setting method |
| JP2010-047597 | 2010-03-04 | ||
| PCT/JP2011/055078 WO2011108708A1 (en) | 2010-03-04 | 2011-03-04 | Electronic appliance, and operation setting method for electronic appliance |
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| TWI685272B (en) * | 2017-09-27 | 2020-02-11 | 關隆股份有限公司 | Connection method of wireless system |
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| JP2011182372A (en) | 2011-09-15 |
| JP5477056B2 (en) | 2014-04-23 |
| WO2011108708A1 (en) | 2011-09-09 |
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