WO2010017680A1 - 一种网络域名的解析方法 - Google Patents
一种网络域名的解析方法 Download PDFInfo
- Publication number
- WO2010017680A1 WO2010017680A1 PCT/CN2008/072881 CN2008072881W WO2010017680A1 WO 2010017680 A1 WO2010017680 A1 WO 2010017680A1 CN 2008072881 W CN2008072881 W CN 2008072881W WO 2010017680 A1 WO2010017680 A1 WO 2010017680A1
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- WIPO (PCT)
- Prior art keywords
- network
- domain name
- address
- network system
- node
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Classifications
-
- 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
- H04L61/4505—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols
- H04L61/4511—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols using domain name system [DNS]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/64—Hybrid switching systems
- H04L12/6418—Hybrid transport
-
- 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
- H04L61/30—Managing network names, e.g. use of aliases or nicknames
-
- 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
Definitions
- the invention relates to a method for parsing a domain name of a computer network, in particular to a method for parsing an industrial internet domain name.
- each node of the network (including: website, server, host, etc.) has a fixed (or static) IP address corresponding to it.
- the IP address is a string of fixed-length, segmented Arabic numerals, such as 192. 168. 10. 3.
- this digitally represented IP address is not easy for people to remember.
- the World Wide Web uses a string of English letters (or letters or characters in other languages), numbers, or a combination of the two (Doma in Name) to correspond to the IP address. For example, "www. s ina. com”, "www. s ipo. gov. cn", "www. fudan. edu", etc. are all easy to remember domain names.
- the domain name is sent to the Domain Name Resolution System (DNS) on the World Wide Web through an Internet infrastructure (Infras ructure).
- DNS Domain Name Resolution System
- the DNS system finds the IP address corresponding to the domain name and sends the corresponding IP address back to the browser of the user's computer.
- This process of transforming a domain name into an IP address is also called an IP address resolution process.
- the browser on the user's computer sends the IP address to the World Wide Web, and the World Wide Web finds the network node corresponding to the IP address according to the TCP/IP protocol, so that the browser on the user's computer and The found network node communicates.
- This DNS IP address resolution process and the process of using IP addresses to find and correspond to network nodes are well known techniques and are well described in many textbooks and computer networking books.
- IP address resource is insufficient. There are often hundreds or even thousands of networks in an industrial Internet. Node. If you assign a static IP address to each internal network node, it is not only impossible from a resource point of view, but also very expensive.
- the network nodes in the industrial Internet should adopt tree-level access control to increase their security.
- the power system from high voltage to low voltage, from the centralized control center to the substation main station to the substation of industrial intelligent equipment is to be hierarchical; such as the oil pipeline in the oil industry, from the centralized control center to the main gas station to the point The transfer station is also hierarchical.
- the first technical problem to be solved by the present invention is to provide a method for parsing a network domain name suitable for an industrial control system, which can cope with a large amount of industrial Internet using a small number of static IP addresses.
- Network node
- a fifth technical problem to be solved by the present invention is to provide a method for parsing a network node address suitable for an industrial control system, but at the same time, the method of parsing such a network node is compatible with the structure and protocol of the existing World Wide Web.
- the present invention provides a method for parsing a network domain name.
- the domain name has a first partial domain name and a second partial domain name.
- the parsing method includes the following steps:
- the IP address of the intranet does not occupy the IP address resources in the World Wide Web.
- the domain name address resolution structure of the intranet in the present invention is compatible with the structure and protocol of the existing World Wide Web.
- FIG. 7 is a flow chart of a second method for a user to send a domain name, a verification password, and an intranet service request of an intranet node to a node (1) in the intranet domain name resolution structure 104.
- each network sub-node in the intranet domain name resolution structure 104 includes a server that has the same structure (or similar) as the root node.
- Each server is connected to at least one IED device for direct operation and control of connected IED devices.
- IED devices there are 13 IED devices in an industrial enterprise: IED ( 1 ), IED ( 2, 1 ), IED ( 2, 2), IED (2, 3), IED ( 2, 1, 1), IED ( 2, 1, 2), IED ( 2, 2, 1 ), IED ( 2, 2, 2), IED ( 2, 3, 1 ), IED (2, 3, 2), IED ( 2, 1, 1, 1 ), IED ( 2, 2, 2, 1 ), IED (2, 2, 2, 2) (not shown), each IED device with the same label is the same as in Figure 2 The network nodes of the labels are connected.
- IED (2, 2, 2, 1) has a redundant device IED (2, 2,
- the intranet portal server 106 in the node (1) is connected to the intranet communication facility 105 via its communication connection 113, and the other 12 nodes in the intranet 103 are connected to the intranet communication facility 105 via respective communication connections.
- the intranet portal server 106 communicates with the other 12 nodes in the intranet 103 via the intranet communication facility 105.
- the intranet communication facility 105 may include a Wide Area Network conforming to the TCP/IP protocol and a Local Area Network conforming to the Ethernet protocol.
- the configuration, structure, and arrangement of the intranet communication facility 105 are well known in the art and will not be described in detail.
- FIG. 5A lists the domain name of the network node of the intranet domain name resolution structure 104. It should be noted that Figure 5A is merely an illustrative embodiment of the domain name format of the present invention, illustrating the naming principles of the domain name format of the present invention.
- a URL consists of three parts: the first part is the service agreement (or service content), such as HTTP or FTP; the second part is the domain name, such as www.s ina. com, the first part and the second part are used. : //" Separated.
- the third part is an optional part that is generally used as a pass parameter (such as a web page address in a website).
- the present invention places the domain name of the network node of the intranet domain name resolution structure 104 and other parameters (such as a verification password, an intranet service request, etc.) in the third part of the URL.
- step 606 the DNS resolution system in the Wanwei network 101 resolves the domain name www.eastpetroleum.com.com into a corresponding IP address. After parsing, the muscle becomes: http: ⁇ 192.168.10.3/Verification Password/Intranet Service Request/Intranet Domain Name/.
- the user sends the parsed URL to the World Wide Web 101 via the browser.
- the router in the World Wide Web 101 sends the parsed URL to the intranet entry (node (1)) according to the TCP/IP protocol.
- the intranet portal server 106 in the intranet portal transmits the tree network node shown in FIG. 2 to the terminal in the form of an HTML webpage according to its IP address via the web 101. 108. ⁇ On the browser.
- the user sends the URL to the World Wide Web 101 via the browser.
- the running status of the intranet domain name address table 802 can be periodically refreshed through the intranet 103 and the domain name resolution structure 104.
- the intranet domain name address table 802 is stored in the intranet portal server 106 for converting the intranet domain name into an intranet IP address.
- the intranet portal server 106 checks if the user is eligible to enter the intranet. At step 904, if there is no access to the intranet, the intranet portal server 106 refuses to provide the service and the process ends.
- the intranet portal server 106 further checks the user's access rights.
- the intranet portal server 106 refuses to provide the service and the process ends.
- Access rights are based on a tree hierarchy.
- a user's access rights are set on a node. The user can only access the node and the lower node of the node, but not the upper node. Taking the tree hierarchy of Figure 2 as an example, if a user's access rights are set on the root node (1), the user can access the root node (1) and all its lower nodes (ie, the tree hierarchy of Figure 2). All nodes in the structure). If a user's access rights are set on a child node (such as on a node (2, 3)), the user can only access the child node (node (2, 3)) and its underlying node (knot) Points (2, 3, 1) and (2, 3, 2)).
- the intranet portal server 106 compares the intranet domain name in the URL with the intranet domain name address table 802 to find an IP address whose device status is "running" in the corresponding address table entry.
- the intranet IP address is the intranet IP address to be retrieved because the device status of the corresponding intranet IP address is "running".
- the intranet portal server 106 finds the intranet IP address whose device status is "running" among the plurality of intranet IP addresses.
- the intranet portal server 106 finds the intranet IP address "100.103 .105.103". If the device status of the intranet IP address "100.103.105.103” is changed to "standby” in the future, and the device status of the intranet IP address "100.103.105.102” is changed to "standby", for the intranet domain name "X. XB. XBb .
- the intranet portal server 106 will find the intranet IP address "100.103.105.102".
- the present invention sets a plurality of intranet IP addresses for an intranet domain name and sets the device status for each intranet IP address ("run” or "wait” Machine "), which can resolve the IP address of the device redundancy configuration.
- the intranet portal server 106 uses the second network communication interface 1017 shown in FIG. 10 to connect to the network node corresponding to the IP address found by the intranet through the intranet communication facility 105 as shown in FIG. The channel through which communication takes place.
- the network node corresponding to the intranet IP address is the node (2, 3, 1).
- the intranet portal server 106 uses the first network communication interface 1016 shown in FIG. 10 to provide various services to the user terminal according to the intranet service request in the URL through the web 101 shown in FIG. Human interface services and remote diagnostic services.
- the server in the node (2, 3, 1) collects the human interface service parameters from the IED (2, 3, 1) through the interface line to form a human-machine interface service page in HTML format.
- the web page is sent to the intranet portal server 106. Then, the intranet portal server 106 transmits the human interface service web page to the user terminal.
- the server in node (2, 3, 1) runs the diagnostics on the IED (2, 3, 1) via its interface line and sends the results of the diagnostics to the internal network in HTML format.
- Portal server 106 Then, the intranet portal server 106 sends the diagnostic program running result to the user terminal in a web page in HTML format.
- the root node (1) is the entry node.
- these child nodes can serve as entry nodes.
- FIG 1 and Figure 3 if we assign a static IP address and a corresponding domain name to the child node (2, 1), and pass the node (2, 1) through the network in Figure 1 and Figure 3.
- the connection 111 is directly connected to the World Wide Web 101, and the user on the World Wide Web 101 can access the internal network 103 by using the point (2, 1) as the second entry.
- an intranet can have multiple entries. This feature is necessary for many levels of intranets, because using low-level nodes as an entry speeds up access.
- the intranet domain name resolution system is independent of the World Wide Web domain name resolution system.
- FIG. 10 is an exemplary structure of the intranet portal server 106 in the root node.
- the intranet portal server 106 includes a processing component 1002, an internal storage component 1004, an external storage component (hard disk) 1006, a disk drive interface 1008, a display 1010, and a display interface 1012. , the first network communication interface 1016, the second network communication interface 1017, an input / Output interface 1 018, a mouse 1 020, a keyboard 1 022 and a set of system bus 1014.
- the external storage unit (hard disk) 1006 is connected to the disk drive interface 1 QQ8; the display 101 0 is connected to the display interface 1 012; the mouse 1020 and the keyboard 1 022 are connected to the input/output interface 1018.
- the processing unit 1002, the internal storage unit 1004, the disk drive interface 1008, the display interface 1012, the first network communication interface 1 016, the second network communication interface 1017, and the input/output interface 1018 are connected to the system bus 1 014.
- Internal storage unit 1 QQ4 and external storage unit 1 QQ6 can store programs, instructions and data.
- internal storage component 1004 has a faster access speed, while external storage component 1006 has a greater storage capacity.
- Display 1010 provides a visual interface between the program being executed and the user.
- the first network communication interface 1016 is capable of providing a communication interface between the server and the World Wide Web 101; the second network communication interface 1017 is capable of providing a communication interface between the server and the internal network 103.
- Processing component 1002 can read program instructions and data in internal storage component 1 004 and outer storage component 1006 and can control the operation of the server by executing these programs and instructions.
- the intranet domain name address table 802 is stored in the internal storage component 1004 or in the external storage component 1006; the program steps required by the intranet portal server 106 in the flowcharts 6, 7, and 9 are also present in the internal storage component 1004 or in the external storage component 1 006. in.
- the exemplary structure of the intranet portal server 106 in the root node shown in FIG. 10 also applies to servers in other nodes in the intranet domain name resolution structure 104. It should be noted that the servers in other nodes only store the intranet domain name address table of this layer and its underlying child nodes. Therefore, the server in a child node can only resolve the network address of the layer and its lower child nodes, and access the layer and its lower child nodes; the server in a child node cannot resolve the network address of the upper node. , and can't access its upper nodes.
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- Computer Networks & Wireless Communication (AREA)
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Description
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US13/058,532 US9143388B2 (en) | 2008-08-11 | 2008-10-30 | Method for network domain name resolution and the resolution device thereof |
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CN200810043697.5A CN101651720B (zh) | 2008-08-11 | 2008-08-11 | 一种网络域名的解析方法 |
CN200810043697.5 | 2008-08-11 |
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WO2010017680A1 true WO2010017680A1 (zh) | 2010-02-18 |
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PCT/CN2008/072881 WO2010017680A1 (zh) | 2008-08-11 | 2008-10-30 | 一种网络域名的解析方法 |
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US (1) | US9143388B2 (zh) |
CN (1) | CN101651720B (zh) |
WO (1) | WO2010017680A1 (zh) |
Cited By (2)
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CN103685597A (zh) * | 2013-12-02 | 2014-03-26 | 北京星网锐捷网络技术有限公司 | 内网地址记录方法及装置 |
US9143388B2 (en) | 2008-08-11 | 2015-09-22 | Shanghai Kelu Software Co., Ltd. | Method for network domain name resolution and the resolution device thereof |
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CN104468853A (zh) * | 2013-09-18 | 2015-03-25 | 中兴通讯股份有限公司 | 一种域名解析方法、服务器及系统 |
US9444681B2 (en) * | 2014-01-31 | 2016-09-13 | Dell Products L.P. | Systems and methods for resolution of uniform resource locators in a local network |
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CN106973125A (zh) * | 2017-03-16 | 2017-07-21 | 中国联合网络通信集团有限公司 | 域名解析实现方法及装置 |
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CN103685597B (zh) * | 2013-12-02 | 2017-01-11 | 北京星网锐捷网络技术有限公司 | 内网地址记录方法及装置 |
Also Published As
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US9143388B2 (en) | 2015-09-22 |
US20110202669A1 (en) | 2011-08-18 |
CN101651720B (zh) | 2014-05-21 |
CN101651720A (zh) | 2010-02-17 |
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