CN109120491A - It is a kind of for establishing the method and system of direct-connected vpn tunneling in net work teaching system - Google Patents
It is a kind of for establishing the method and system of direct-connected vpn tunneling in net work teaching system Download PDFInfo
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- CN109120491A CN109120491A CN201710481207.9A CN201710481207A CN109120491A CN 109120491 A CN109120491 A CN 109120491A CN 201710481207 A CN201710481207 A CN 201710481207A CN 109120491 A CN109120491 A CN 109120491A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4633—Interconnection of networks using encapsulation techniques, e.g. tunneling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
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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
- H04L61/09—Mapping addresses
- H04L61/25—Mapping addresses of the same type
- H04L61/2503—Translation of Internet protocol [IP] addresses
- H04L61/2521—Translation architectures other than single NAT servers
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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
- H04L61/09—Mapping addresses
- H04L61/25—Mapping addresses of the same type
- H04L61/2503—Translation of Internet protocol [IP] addresses
- H04L61/2592—Translation of Internet protocol [IP] addresses using tunnelling or encapsulation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/02—Network architectures or network communication protocols for network security for separating internal from external traffic, e.g. firewalls
- H04L63/0272—Virtual private networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
- H04L69/164—Adaptation or special uses of UDP protocol
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Computer Hardware Design (AREA)
- Computing Systems (AREA)
- General Engineering & Computer Science (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Small-Scale Networks (AREA)
Abstract
The present invention provides a kind of for establishing the method and system of direct-connected vpn tunneling in net work teaching system, which comprises step 1, Master Control Room server establishes vpn tunneling with live streaming terminal and monitoring device respectively；UDP connection is established between the live streaming terminal and the monitoring device；Step 2, its vpn tunneling between the live streaming terminal and the monitoring device based on the foundation of the Master Control Room server is established UDP between the live streaming terminal and described monitoring device and is connect, and the direct-connected vpn tunneling being broadcast live between terminal and the monitoring device is established.The present invention has and has the beneficial effect for quickly establishing direct-connected vpn tunneling in net work teaching system in elimination.
Description
Technical field
The present invention relates to distance education technique fields, straight in net work teaching system for establishing more particularly, to one kind
The even method and system of vpn tunneling.
Background technique
The existing education system of China is very huge at present, and outstanding educational resource is few, and considerable area is outstanding
It is the quality of education of remote districts, at all can not be with the quality of education phase of developed regions due to lacking good teacher strength
Than largely causing the unfairness of educational resource distribution.And with the continuous development of technology, scientific and technological applies feeler
And the application of internet has gradually been dissolved into teaching field, teleeducation system is in the ascendant.
In existing Internet class live-broadcast system, live broadcast system is a kind of live streaming for sending main broadcaster's client
Video flowing shares the server system watched to multiple live streaming clients.Multiple direct broadcasting rooms are provided in live broadcast system, straight
Client is broadcast into the live video stream that main broadcaster's client between current live after direct broadcasting room, can be watched to send.
To solve the above-mentioned problems, the application for a patent for invention of Publication No. CN104506802A discloses one kind in client
End side increase Client Agent module and video monitoring equipment side increase monitoring device proxy module, Client Agent module and
Monitoring device proxy module establishes UDP channel under the assistance of video monitoring server, through vpn tunneling technology, client and
Video monitoring equipment is directly communicated by respective proxy module by the UDP channel, to solve client and view
Communication between frequency monitoring device will be forwarded the problem of bringing by video server.
However, the communication in prior art above scheme between client and video monitoring equipment will pass through respective generation
Reason module is handled and is forwarded, and there are proxy module consumption resource is more, efficiency of transmission is not high, and signaling negotiation and Service control are multiple
The problems such as miscellaneous.
Summary of the invention
The present invention in order to overcome the problems referred above or at least is partially solved the above problem, provides a kind of for establishing network religion
The method of direct-connected vpn tunneling in system.
According to an aspect of the present invention, a kind of method for establishing direct-connected vpn tunneling in net work teaching system is provided,
Include:
Step 1, Master Control Room server establishes vpn tunneling with live streaming terminal and monitoring device respectively；The live streaming terminal with
UDP connection is established between the monitoring device；
Step 2, the Master Control Room server based on the foundation its between the live streaming terminal and the monitoring device
Vpn tunneling, between the live streaming terminal and the monitoring device establish UDP connection, establish the live streaming terminal and the prison
Control the direct-connected vpn tunneling of equipment room.
Further, the step of Master Control Room server described in the step 1 establishes vpn tunneling with live streaming terminal is further wrapped
It includes:
The NAT device of live streaming terminal generates the private network IP address and corresponding end slogan and public network mapping IP of the live streaming terminal
The mapping table of location and corresponding end slogan；
Private network IP address and corresponding end slogan of the terminal based on the live streaming terminal is broadcast live, is sent out to the Master Control Room server
It send and establishes vpn tunneling request；
The NAT device of live streaming terminal establishes the private network IP address and corresponding ports that terminal is broadcast live described in vpn tunneling request
The Master Control Room server is sent to after number being converted to the public network mapping IP address and port numbers of the live streaming terminal；The master control
The vpn tunneling of establishing that room server responds the live streaming terminal is requested, and completes it with described and building for terminal room vpn tunneling is broadcast live
It is vertical.
Further, the step of Master Control Room server described in the step 1 establishes vpn tunneling with monitoring device is further wrapped
It includes:
The NAT device of monitoring device generates the private network IP address and corresponding end slogan and public network mapping IP of the monitoring device
The mapping table of location and corresponding end slogan；
Private network IP address and corresponding end slogan of the monitoring device based on the monitoring device are sent out to the Master Control Room server
It send and establishes vpn tunneling request；
The NAT device of monitoring device establishes the private network IP address and corresponding ports of monitoring device described in vpn tunneling request
The Master Control Room server is sent to after number being converted to the public network mapping IP address and port numbers of the monitoring device；The master control
What room server responded the monitoring device establishes vpn tunneling request, completes its vpn tunneling between the monitoring device and builds
It is vertical.
Further, establishing the step of UDP connection between the live streaming terminal and the monitoring device further comprises:
Agreement is passed through come the cross-over NAT equipment that burrows by NAT between live streaming terminal and monitoring device, is established between the two
UDP connection.
Further, the step 2 further comprises:
It is respectively that vpn tunneling role server and vpn tunneling are straight that Master Control Room server, which distributes monitoring device and live streaming terminal,
Terminal role is broadcast, issues configuration information to the live streaming terminal and the monitoring device, so that the live streaming terminal and the prison
It controls equipment and direct-connected vpn tunneling is established by UDP connection.
Further, establishing the step of UDP connection between the live streaming terminal and the monitoring device further comprises:
The public network that Master Control Room server obtains the live streaming terminal maps IP address and corresponding end slogan and the monitoring
The public network mapping IP address and corresponding end slogan of equipment send out the public network mapping IP address of the live streaming terminal and corresponding end slogan
The monitoring device is given, the public network of the monitoring device is mapped into IP address and corresponding end slogan is sent to client, for
The live streaming terminal and the monitoring device are set based on the IP address and corresponding end slogan respectively received the passing through NAT that burrow
It is standby, establish the UDP connection between the live streaming terminal and the monitoring device.
Further, the step 2 further comprises:
It is vpn tunneling server that Master Control Room server, which distributes the monitoring device, issues the void that vpn tunneling server uses
The Microsoft Loopback Adapter address that quasi- NIC address and vpn tunneling live streaming terminal use issues carry out authentication user to the monitoring device
Name and password give the monitoring device；The monitoring device completes the VPN based on the message that the Master Control Room server issues
The configuration of tunnel server；Process is listened in starting on the private network IP address of monitoring device and private network port numbers, listens to the VPN
The vpn tunneling connection request of tunnel live streaming terminal；Subscription authentication and response are carried out after listening to vpn tunneling connection request；?
PPP Microsoft Loopback Adapter interface is generated in monitoring device, which is the vpn tunneling server that Master Control Room server issues
The Microsoft Loopback Adapter address used；
It is that terminal is broadcast live in vpn tunneling that Master Control Room server, which distributes the live streaming terminal, notifies the live streaming terminal vpn tunneling
The IP address and port numbers of server are that the public network of the monitoring device maps IP address and public network port number, and issues and reflect
The username and password of power gives the live streaming terminal, and the live streaming terminal establishes vpn tunneling connection request to monitoring device transmission,
The monitoring device, which listens to this, to be established and carries out subscription authentication and response after vpn tunneling connection request, and by Master Control Room server
It is handed down to the live streaming terminal in the Microsoft Loopback Adapter address for distributing to the vpn tunneling live streaming terminal；The live streaming terminal receives prison
The Microsoft Loopback Adapter address that the vpn tunneling live streaming terminal that control equipment issues uses, generates the clamping of PPP virtual net in live streaming terminal
Mouthful, complete the foundation of direct-connected vpn tunneling.
According to another aspect of the present invention, it provides and a kind of is for establish direct-connected vpn tunneling in net work teaching system
System, comprising:
First link block establishes vpn tunneling with live streaming terminal and monitoring device respectively for controlling Master Control Room server；
It controls and establishes UDP connection between the live streaming terminal and the monitoring device；
Second link block, for control the Master Control Room server based on the foundation its with the live streaming terminal and
Vpn tunneling, the live streaming terminal between the monitoring device and UDP connection is established between the monitoring device, established described straight
Broadcast the direct-connected vpn tunneling between terminal and the monitoring device.
Further, first link block is also used to:
Control live streaming terminal NAT device generate the live streaming terminal private network IP address and corresponding end slogan and public network mapping
The mapping table of IP address and corresponding end slogan；
Private network IP address and corresponding end slogan of the control live streaming terminal based on the live streaming terminal, to the Master Control Room service
Vpn tunneling request is established in device transmission；
The NAT device of control live streaming terminal establishes the private network IP address and correspondence that terminal is broadcast live described in vpn tunneling request
The public network that port numbers are converted to the live streaming terminal is sent to the Master Control Room server after mapping IP address and port numbers；It is described
What Master Control Room server responded the live streaming terminal establishes vpn tunneling request, completes itself and the live streaming terminal room vpn tunneling
It establishes.
Further, first link block is also used to:
Control monitoring device NAT device generate the monitoring device private network IP address and corresponding end slogan and public network mapping
The mapping table of IP address and corresponding end slogan；
Private network IP address and corresponding end slogan of the monitoring device based on the monitoring device are controlled, to the Master Control Room service
Vpn tunneling request is established in device transmission；
The NAT device of control monitoring device establishes the private network IP address and correspondence of monitoring device described in vpn tunneling request
The public network that port numbers are converted to the monitoring device is sent to the Master Control Room server after mapping IP address and port numbers；It is described
The vpn tunneling of establishing that Master Control Room server responds the monitoring device is requested, its vpn tunneling between the monitoring device is completed
It establishes.
The application proposes a kind of for establishing the method and system of direct-connected vpn tunneling in net work teaching system, institute of the present invention
Stating scheme has the beneficial effect for quick and precisely establishing direct-connected vpn tunneling in net work teaching system.
Detailed description of the invention
Fig. 1 is a kind of for establishing the whole of the method for direct-connected vpn tunneling in net work teaching system according to the embodiment of the present invention
Body flow diagram；
Fig. 2 is a kind of for establishing the whole of the system of direct-connected vpn tunneling in net work teaching system according to the embodiment of the present invention
Body block schematic illustration；
Fig. 3 is a kind of for establishing setting for the method for direct-connected vpn tunneling in net work teaching system according to the embodiment of the present invention
Standby general frame schematic diagram.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating the present invention.
Such as Fig. 1, in a specific embodiment of the invention, show a kind of for establishing direct-connected VPN tunnel in net work teaching system
The method overall flow schematic diagram in road.Generally, comprising: step 1, Master Control Room server respectively with live streaming terminal and monitoring device
Establish vpn tunneling；UDP connection is established between the live streaming terminal and the monitoring device；Step 2, the Master Control Room server
Its vpn tunneling between the live streaming terminal and the monitoring device, the live streaming terminal and described prison based on the foundation
UDP connection is established between control equipment, establishes the direct-connected vpn tunneling between the live streaming terminal and the monitoring device.
Udp protocol full name is User Datagram Protocol, it is used to handle data packet as Transmission Control Protocol in a network, is
A kind of connectionless agreement.In osi model, at the 4th layer --- transport layer, upper one layer in IP agreement.UDP, which has, not to be mentioned
The shortcomings that for data packet grouping, assembling and data packet cannot being ranked up, that is to say, that after message is sent, being can not
Learn its whether safe and complete arrival.UDP is used to that those is supported to need to transmit the network application of data between the computers.Packet
The network application for including numerous Client/Servers including Video Conference System is required using udp protocol.UDP
Agreement has been used many years so far from coming out, although its initial brilliance is covered by some similar agreements,
Even be today UDP still can yet be regarded as a very useful and feasible network transmission layer protocol.
It is a kind of for establishing the side of direct-connected vpn tunneling in net work teaching system in another specific embodiment of the invention
The step of method, Master Control Room server described in the step 1 establishes vpn tunneling with live streaming terminal, further comprises:
The NAT device of live streaming terminal generates the private network IP address and corresponding end slogan and public network mapping IP of the live streaming terminal
The mapping table of location and corresponding end slogan；
Private network IP address and corresponding end slogan of the terminal based on the live streaming terminal is broadcast live, is sent out to the Master Control Room server
It send and establishes vpn tunneling request；
The NAT device of live streaming terminal establishes the private network IP address and corresponding ports that terminal is broadcast live described in vpn tunneling request
The Master Control Room server is sent to after number being converted to the public network mapping IP address and port numbers of the live streaming terminal；The master control
The vpn tunneling of establishing that room server responds the live streaming terminal is requested, and completes it with described and building for terminal room vpn tunneling is broadcast live
It is vertical.
NAT (Network Address Translation, network address translation) is to propose for 1994.When dedicated
Some hosts inside net have already been assigned to local ip address (specific address only used in this private network), but
When wanting with main-machine communication (not needing to encrypt) on internet now again, NAT method can be used.This method is needed dedicated
Net is connected to installation NAT software on the router of internet.Router equipped with NAT software is called NAT router, it is at least
One effective external Global IP address.In this way, all hosts using local address with the external world communication when, will be in NAT
Its local address is converted into Global IP addresses on router, could be connected with internet.
It is a kind of for establishing the side of direct-connected vpn tunneling in net work teaching system in another specific embodiment of the invention
The step of method, Master Control Room server described in the step 1 establishes vpn tunneling with monitoring device, further comprises:
The NAT device of monitoring device generates the private network IP address and corresponding end slogan and public network mapping IP of the monitoring device
The mapping table of location and corresponding end slogan；
Private network IP address and corresponding end slogan of the monitoring device based on the monitoring device are sent out to the Master Control Room server
It send and establishes vpn tunneling request；
The NAT device of monitoring device establishes the private network IP address and corresponding ports of monitoring device described in vpn tunneling request
The Master Control Room server is sent to after number being converted to the public network mapping IP address and port numbers of the monitoring device；The master control
What room server responded the monitoring device establishes vpn tunneling request, completes its vpn tunneling between the monitoring device and builds
It is vertical.
In the above specific embodiment, live streaming terminal/monitoring device establishes vpn tunneling with Master Control Room server respectively, can
For sending the interaction message being broadcast live between terminal/monitoring device and Master Control Room server in subsequent step, at the same it is whole in live streaming
When holding direct-connected vpn tunneling failure between monitoring device, live streaming terminal will use the VPN that itself and Master Control Room server are established
Tunnel accesses Master Control Room server, and Master Control Room server taken by communicating with the vpn tunneling of monitoring device by Master Control Room
The forwarding of business device obtains the monitor video of monitoring device.
It is a kind of for establishing the side of direct-connected vpn tunneling in net work teaching system in another specific embodiment of the invention
Method, the step of UDP connection is established between the live streaming terminal and the monitoring device, further comprise:
Agreement is passed through come the cross-over NAT equipment that burrows by NAT between live streaming terminal and monitoring device, is established between the two
UDP connection.
It is a kind of for establishing the side of direct-connected vpn tunneling in net work teaching system in another specific embodiment of the invention
Method, the step 2 further comprises:
It is respectively that vpn tunneling role server and vpn tunneling are straight that Master Control Room server, which distributes monitoring device and live streaming terminal,
Terminal role is broadcast, issues configuration information to the live streaming terminal and the monitoring device, so that the live streaming terminal and the prison
It controls equipment and direct-connected vpn tunneling is established by UDP connection.
It is a kind of for establishing the side of direct-connected vpn tunneling in net work teaching system in another specific embodiment of the invention
Method, the step of UDP connection is established between the live streaming terminal and the monitoring device, further comprise:
The public network that Master Control Room server obtains the live streaming terminal maps IP address and corresponding end slogan and the monitoring
The public network mapping IP address and corresponding end slogan of equipment send out the public network mapping IP address of the live streaming terminal and corresponding end slogan
The monitoring device is given, the public network of the monitoring device is mapped into IP address and corresponding end slogan is sent to client, for
The live streaming terminal and the monitoring device are set based on the IP address and corresponding end slogan respectively received the passing through NAT that burrow
It is standby, establish the UDP connection between the live streaming terminal and the monitoring device.
In the above-mentioned specific embodiment of the present invention, live streaming terminal maps IP address and port numbers by the public network of monitoring device
Message is sent to monitoring device, the source IP address and port numbers in message are the private network IP address and port numbers that terminal is broadcast live, visitor
The NAT device at family end by message source IP address and port numbers be converted to the public network mapping IP address and port numbers of live streaming terminal
Be sent to the NAT device of monitoring device afterwards, the NAT device of monitoring device receive after message by message purpose IP address and end
Slogan by the public network of monitoring device map IP address and port numbers be converted to monitoring device private network IP address and port numbers after send out
Give monitoring device.Monitoring device maps IP address and port numbers by the public network of live streaming terminal and sends message to live streaming terminal,
Source IP address and port numbers in message are the private network IP address and port numbers of monitoring device, and the NAT device of monitoring device will disappear
The public network that source IP address and port numbers in breath are converted to monitoring device is sent to monitoring device after mapping IP address and port numbers
NAT device, the NAT device of monitoring device receive after message by message purpose IP address and port numbers by live streaming terminal
Public network mapping IP address and port numbers are converted to the private network IP address that terminal is broadcast live and are sent to live streaming terminal after port numbers.Pass through
Terminal is broadcast live in this mode can connect directly mutual transmission message with monitoring device using the UDP for the foundation that burrows.
It is a kind of for establishing the side of direct-connected vpn tunneling in net work teaching system in another specific embodiment of the invention
Method, the step 2 further comprises:
It is vpn tunneling server that Master Control Room server, which distributes the monitoring device, issues the void that vpn tunneling server uses
The Microsoft Loopback Adapter address that quasi- NIC address and vpn tunneling live streaming terminal use issues carry out authentication user to the monitoring device
Name and password give the monitoring device；The monitoring device completes the VPN based on the message that the Master Control Room server issues
The configuration of tunnel server；Process is listened in starting on the private network IP address of monitoring device and private network port numbers, listens to the VPN
The vpn tunneling connection request of tunnel live streaming terminal；Subscription authentication and response are carried out after listening to vpn tunneling connection request；?
PPP Microsoft Loopback Adapter interface is generated in monitoring device, which is the vpn tunneling server that Master Control Room server issues
The Microsoft Loopback Adapter address used；
It is that terminal is broadcast live in vpn tunneling that Master Control Room server, which distributes the live streaming terminal, notifies the live streaming terminal vpn tunneling
The IP address and port numbers of server are that the public network of the monitoring device maps IP address and public network port number, and issues and reflect
The username and password of power gives the live streaming terminal, and the live streaming terminal establishes vpn tunneling connection request to monitoring device transmission,
The monitoring device, which listens to this, to be established and carries out subscription authentication and response after vpn tunneling connection request, and by Master Control Room server
It is handed down to the live streaming terminal in the Microsoft Loopback Adapter address for distributing to the vpn tunneling live streaming terminal；The live streaming terminal receives prison
The Microsoft Loopback Adapter address that the vpn tunneling live streaming terminal that control equipment issues uses, generates the clamping of PPP virtual net in live streaming terminal
Mouthful, complete the foundation of direct-connected vpn tunneling.
It is a kind of for establishing the side of direct-connected vpn tunneling in net work teaching system in another specific embodiment of the invention
Method, the method are based on wifi communication environment, and the method for realizing that direct-connected vpn tunneling is established in net work teaching system is specific as follows.
1. the network equipment used
Router: the pole 1S of OpenWrt PandoraBox 12.09.1 system has been brushed.
The computer (while having both dns caching server) of VPN client: one installation FreeBSD 10.0X64.
The vps of VPN Server: one installation Ubuntu 12.4x86.
2. installing necessary program
VPN Server:
apt-get install tinc
VPN Client:
cd/usr/ports/security/tinc；make install
3.tinc configuration
Tinc is the program for being similar to openvpn, can establish three layers or two layer tunnel, matches used here as default
It sets, that is, three layer tunnel.
VPN Server:
Configuration file bibliographic structure:
/etc/tinc
| -- nets.boot # includes to need tinc instance name to be started, one instance name of a line
`--vpn1 #tinc example catalogue
|--hosts
| | -- host1 #VPN Client host-confg file (including Client public key, copied from Client)
| `--server #VPN Server host-confg file
| -- the rsa private key that the rsa_key.priv # tinc example uses
| -- when tinc-up #tinc starts
The configuration of the `--tinc.conf # example
A) catalogues at different levels are created, add tinc.conf file under vpn1 catalogue
#cat tinc.conf
Name=server # host-confg file name
Device=/dev/tun #tun equipment is then/dev/net/tun if it is 3.x kernel
The tunnel TCPonly=no # default uses UDP
For ReplayWindow=0 # because of packet loss, replay detection will lead to more serious packet loss
B) server file is added under hosts catalogue, file name corresponds to the Name in tinc configuration
#cat hosts/server
Address=1.2.3.4 # the machine public network address
The port numbers that Port=6550 # is used, are defaulted as 655
Subnet=0.0.0.0/0 # makes tinc receive the packet of any source address
C) rsa key pair is created
#tincd-n vpn1-K # carriage return！
D) tinc-up file is added, has added and has remembered to run chmod+x tinc-up to add execution permission
#cat tinc-up
#！/bin/sh
Ifconfig $ INTERFACE 192.168.40.1 netmask 255.255.255.0 #tun interface IP address
The routing of the opposite end route add-host 192.168.30.254 dev $ INTERFACE# to tun
route add -net 192.168.30.0 netmask 255.255.255.0 gw 192.168.30.254
Routing of the dev $ INTERFACE # to opposite end address field
route add -net 192.168.3.0 netmask 255.255.255.0 gw 192.168.30.254dev
Routing of the $ INTERFACE# to the device address for being connected to wifi
E) also lack the host public key configuration file (hosts/host1) of client to the VPN of VPN Server here, need
It to be copied under this document to hosts catalogue after VPN Client generates key pair from Client
VPN Client:
Bibliographic structure:
#tree/usr/local/etc/tinc/vpn1
/usr/local/etc/tinc/vpn1
|--hosts
||--host1
| `--server # copies (public key comprising Server) from VPN Server
|--rsa_key.priv
|--tinc-down
|--tinc-up
`--tinc.conf
Here configuration file is similar with Server, repeats no more
#cat tinc.conf
Name=host1
ConnectTo=server # is connected to the host specified in the configuration of server host
Device=/dev/tun0
TCPonly=no
ReplayWindow=0
#cat hosts/host1
Address=192.168.2.202
Subnet=192.168.30.0/24
Subnet=192.168.3.0/24
#cat tinc-up
#！/bin/sh
ifconfig$INTERFACE 192.168.30.254 netmask 255.255.255.0
route add -host 192.168.40.1/32 192.168.30.254
route add -host 8.8.4.4/32 192.168.30.254
route add -host 8.8.8.8/32 192.168.30.254
route add -net 192.168.40.0/24 192.168.40.1
#cat tinc-down
#！/bin/sh
ifconfig$INTERFACE down
ifconfig$INTERFACE destroy&
All Files editor generates key pair after the completion, and hosts/host1 file is finally uploaded to VPN Server's
In hosts catalogue
#tincd -n vpn1 -K
4. routing and NAT configuration
VPN Server:
NAT:
#cat/etc/rc.local
#！/bin/sh-e
echo 1>/proc/sys/net/ipv4/ip_forward
iptables-t nat-A POSTROUTING-s 192.168.3.0/24-j SNAT--to-source
1.2.3.4
iptables-t nat-A POSTROUTING-s 192.168.30.0/24-j SNAT--to-source
1.2.3.4
exit 0
It is forwarded between opening interface and makees NAT using iptables, used SNAT here, be one with MASQUERADE effect
Sample.
The configuration of iptables can also be equally added to/etc/network/if-up.d/tinc or tinc-up
In.
VPN Client:
The following contents is added to rc.local
Pf_enable=" YES "
Tincd_enable=" YES "
Tincd_cfg=" vpn1 "
Source address is done by pf configuration is as follows using pf
#cat/etc/pf.conf
Ext_if=" tun0 "
pass quick from 192.168.3.1 to 192.168.3.0/24 no state
pass quick from 192.168.3.0/24 to 192.168.3.1 no state
pass in quick route-to$ext_if from 192.168.3.0/24 to any no state
Because to do DNS cache on VPN Client, destination address is that the packet of .3.1 is directly routed according to kernel
Table is routed.
The configuration of pf can equally be executed with tinc-up
#echo“pf confs"|pfctl-f-
5.DNS caching
VPN Client:
#unbound-control-setup # is automatically configured
Close automatic addition dns address
#cat/etc/resolvconf.conf
#Generated by local-unbound-setup
Resolv_conf="/dev/null " #prevent updating/etc/resolv.conf
#unbound_conf="/var/unbound/forward.conf "
Unbound_pid="/var/run/local_unbound.pid "
Unbound_service=" local_unbound "
Unbound_restart=" service local_unbound reload "
Edit forward.conf
#cat/etc/unbound/forward.conf
forward-zone:
name:″.″
forward-addr:8.8.4.4
forward-addr:8.8.8.8
6. wireless router configures
Wireline interface:
Wifi how is allowed to support VPN direct-connected
DHCP configuration:
Wifi how is allowed to support VPN direct-connected
7. starting service
VPN Server:
service tinc start
Iptables rule is manually entered
VPN Client:
service local_unbound start
service tincd start
service pf start
Figure such as 2 is shown in another specific implementation example of the present invention, and one kind is direct-connected in net work teaching system for establishing
The overall system architecture schematic diagram of vpn tunneling, generally, comprising:
First link block A1 establishes VPN tunnel with live streaming terminal and monitoring device respectively for controlling Master Control Room server
Road；It controls and establishes UDP connection between the live streaming terminal and the monitoring device；
Second link block A2, for controlling itself and the live streaming terminal of the Master Control Room server based on the foundation
Vpn tunneling, the live streaming terminal between the monitoring device and UDP connection is established between the monitoring device, described in foundation
The direct-connected vpn tunneling between terminal and the monitoring device is broadcast live.
It is a kind of to be for establish direct-connected vpn tunneling in net work teaching system in another of the invention specific embodiment
System, first link block are also used to:
Control live streaming terminal NAT device generate the live streaming terminal private network IP address and corresponding end slogan and public network mapping
The mapping table of IP address and corresponding end slogan；
Private network IP address and corresponding end slogan of the control live streaming terminal based on the live streaming terminal, to the Master Control Room service
Vpn tunneling request is established in device transmission；
The NAT device of control live streaming terminal establishes the private network IP address and correspondence that terminal is broadcast live described in vpn tunneling request
The public network that port numbers are converted to the live streaming terminal is sent to the Master Control Room server after mapping IP address and port numbers；It is described
What Master Control Room server responded the live streaming terminal establishes vpn tunneling request, completes itself and the live streaming terminal room vpn tunneling
It establishes.
It is a kind of to be for establish direct-connected vpn tunneling in net work teaching system in another of the invention specific embodiment
System, first link block are also used to:
Control monitoring device NAT device generate the monitoring device private network IP address and corresponding end slogan and public network mapping
The mapping table of IP address and corresponding end slogan；
Private network IP address and corresponding end slogan of the monitoring device based on the monitoring device are controlled, to the Master Control Room service
Vpn tunneling request is established in device transmission；
The NAT device of control monitoring device establishes the private network IP address and correspondence of monitoring device described in vpn tunneling request
The public network that port numbers are converted to the monitoring device is sent to the Master Control Room server after mapping IP address and port numbers；It is described
The vpn tunneling of establishing that Master Control Room server responds the monitoring device is requested, its vpn tunneling between the monitoring device is completed
It establishes.
It is a kind of to be for establish direct-connected vpn tunneling in net work teaching system in another of the invention specific embodiment
System, first link block are also used to:
Agreement is passed through come the cross-over NAT equipment that burrows by NAT between control live streaming terminal and monitoring device, establishes the two
Between UDP connection.
It is a kind of to be for establish direct-connected vpn tunneling in net work teaching system in another of the invention specific embodiment
System, second link block are also used to:
Controlling Master Control Room server distribution monitoring device and live streaming terminal is respectively vpn tunneling role server and VPN tunnel
Terminal role is broadcast live in road, issues configuration information to the live streaming terminal and the monitoring device, so that the live streaming terminal and institute
It states monitoring device and direct-connected vpn tunneling is established by UDP connection.
It is a kind of to be for establish direct-connected vpn tunneling in net work teaching system in another of the invention specific embodiment
System, first link block are also used to:
Control Master Control Room server obtains the public network mapping IP address and corresponding end slogan and described of the live streaming terminal
The public network mapping IP address and corresponding end slogan of monitoring device, by the public network mapping IP address and corresponding ports of the live streaming terminal
Number it is sent to the monitoring device, the public network of the monitoring device is mapped into IP address and corresponding end slogan is sent to client,
So that the live streaming terminal and the monitoring device carry out the passing through NAT that burrows based on the IP address and corresponding end slogan respectively received
Equipment establishes the UDP connection between the live streaming terminal and the monitoring device.
It is a kind of to be for establish direct-connected vpn tunneling in net work teaching system in another of the invention specific embodiment
System, second link block are also used to:
Controlling Master Control Room server and distributing the monitoring device is vpn tunneling server, issues the use of vpn tunneling server
Microsoft Loopback Adapter address and the vpn tunneling Microsoft Loopback Adapter address that uses of live streaming terminal to the monitoring device, issue and authenticated
Username and password gives the monitoring device；Described in the message completion that the monitoring device is issued based on the Master Control Room server
The configuration of vpn tunneling server；Process is listened in starting on the private network IP address of monitoring device and private network port numbers, is listened to described
The vpn tunneling connection request of vpn tunneling live streaming terminal；Subscription authentication and response are carried out after listening to vpn tunneling connection request；
PPP Microsoft Loopback Adapter interface is generated in monitoring device, which is the vpn tunneling service that Master Control Room server issues
The Microsoft Loopback Adapter address that device uses；
Controlling Master Control Room server and distributing the live streaming terminal is that terminal is broadcast live in vpn tunneling, notifies the live streaming terminal VPN
The IP address and port numbers of tunnel server are that the public network of the monitoring device maps IP address and public network port number, and issue into
The username and password of row authentication gives the live streaming terminal, and the live streaming terminal establishes vpn tunneling connection to monitoring device transmission
Request, the monitoring device listens to after this establishes vpn tunneling connection request and carries out subscription authentication and response, and Master Control Room is taken
It is handed down to the live streaming terminal in the Microsoft Loopback Adapter address that business device distributes to the vpn tunneling live streaming terminal；The live streaming terminal connects
The Microsoft Loopback Adapter address that the vpn tunneling live streaming terminal that monitoring device issues uses is received, generates PPP Microsoft Loopback Adapter in live streaming terminal
Interface completes the foundation of direct-connected vpn tunneling.
Fig. 3 shows a kind of for establishing the knot of the equipment of direct-connected vpn tunneling in net work teaching system of the embodiment of the present application
Structure block diagram.
Referring to Fig. 3, a kind of equipment for establishing direct-connected vpn tunneling in net work teaching system, comprising: processor
(processor) 301, memory (memory) 302 and bus 303；
Wherein,
The processor 301 and memory 302 complete mutual communication by the bus 303；
The processor 301 is used to call the program instruction in the memory 302, to execute above-mentioned each method embodiment
Provided method, for example, step 1, Master Control Room server establishes vpn tunneling with live streaming terminal and monitoring device respectively；
UDP connection is established between the live streaming terminal and the monitoring device；Step 2, the Master Control Room server is based on the foundation
Its vpn tunneling between the live streaming terminal and the monitoring device, build between the live streaming terminal and described monitoring device
Vertical UDP connection, establishes the direct-connected vpn tunneling between the live streaming terminal and the monitoring device.
The present embodiment discloses a kind of computer program product, and the computer program product includes being stored in non-transient calculating
Computer program on machine readable storage medium storing program for executing, the computer program include program instruction, when described program instruction is calculated
When machine executes, computer is able to carry out method provided by above-mentioned each method embodiment, for example, step 1, Master Control Room service
Device establishes vpn tunneling with live streaming terminal and monitoring device respectively；UDP company is established between the live streaming terminal and the monitoring device
It connects；Step 2, its VPN between the live streaming terminal and the monitoring device of the Master Control Room server based on the foundation
UDP connection is established between tunnel, the live streaming terminal and the monitoring device, establishes the live streaming terminal and the monitoring device
Between direct-connected vpn tunneling.
The present embodiment provides a kind of non-transient computer readable storage medium, the non-transient computer readable storage medium
Computer instruction is stored, the computer instruction makes the computer execute method provided by above-mentioned each method embodiment, example
It such as include: step 1, Master Control Room server establishes vpn tunneling with live streaming terminal and monitoring device respectively；The live streaming terminal and institute
It states and establishes UDP connection between monitoring device；Step 2, itself and the live streaming of the Master Control Room server based on the foundation be eventually
It holds and establishes UDP connection between the vpn tunneling between the monitoring device, the live streaming terminal and the monitoring device, establish institute
State the direct-connected vpn tunneling between live streaming terminal and the monitoring device.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above method embodiment can pass through
The relevant hardware of program instruction is completed, and program above-mentioned can be stored in a computer readable storage medium, the program
When being executed, step including the steps of the foregoing method embodiments is executed；And storage medium above-mentioned includes: ROM, RAM, magnetic disk or light
The various media that can store program code such as disk.
Described above is only to illustrate for establishing the embodiments such as equipment of direct-connected vpn tunneling in net work teaching system
Property, wherein the unit as illustrated by the separation member may or may not be physically separated, as unit
The component of display may or may not be physical unit, it can and it is in one place, or may be distributed over more
In a network unit.Some or all of the modules therein can be selected to realize this embodiment scheme according to the actual needs
Purpose.Those of ordinary skill in the art are without paying creative labor, it can understand and implement.
Through the above description of the embodiments, those skilled in the art can be understood that each embodiment can
It realizes by means of software and necessary general hardware platform, naturally it is also possible to pass through hardware.Based on this understanding, on
Stating technical solution, substantially the part that contributes to existing technology can be embodied in the form of software products in other words, should
Computer software product may be stored in a computer readable storage medium, such as ROM/RAM, magnetic disk, CD, including several fingers
It enables and using so that a computer equipment (can be personal computer, server or the network equipment etc.) executes each implementation
Method described in certain parts of example or embodiment.
Finally, the present processes are only preferable embodiment, it is not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in protection of the invention
Within the scope of.
Claims (10)
1. a kind of method for establishing direct-connected vpn tunneling in net work teaching system characterized by comprising
Step 1, Master Control Room server establishes vpn tunneling with live streaming terminal and monitoring device respectively；The live streaming terminal with it is described
UDP connection is established between monitoring device；
Step 2, its VPN between the live streaming terminal and the monitoring device of the Master Control Room server based on the foundation
UDP connection is established between tunnel, the live streaming terminal and the monitoring device, establishes the live streaming terminal and the monitoring device
Between direct-connected vpn tunneling.
2. the method as described in claim 1, which is characterized in that Master Control Room server described in the step 1 and live streaming terminal
The step of establishing vpn tunneling further comprises:
Live streaming terminal NAT device generate the live streaming terminal private network IP address and corresponding end slogan and public network mapping IP address and
The mapping table of corresponding end slogan；
Private network IP address and corresponding end slogan of the terminal based on the live streaming terminal is broadcast live, is built to Master Control Room server transmission
Vertical vpn tunneling request；
The private network IP address and corresponding end slogan that the NAT device of live streaming terminal establishes live streaming terminal described in vpn tunneling request turn
The Master Control Room server is sent to after being changed to the public network mapping IP address and port numbers of the live streaming terminal；The Master Control Room clothes
The vpn tunneling of establishing that business device responds the live streaming terminal is requested, and the foundation of itself and the live streaming terminal room vpn tunneling is completed.
3. the method as described in claim 1, which is characterized in that Master Control Room server and monitoring device described in the step 1
The step of establishing vpn tunneling further comprises:
The NAT device of monitoring device generate the monitoring device private network IP address and corresponding end slogan and public network mapping IP address and
The mapping table of corresponding end slogan；
Private network IP address and corresponding end slogan of the monitoring device based on the monitoring device are built to Master Control Room server transmission
Vertical vpn tunneling request；
The NAT device of monitoring device establishes the private network IP address of monitoring device described in vpn tunneling request and corresponding end slogan turns
The Master Control Room server is sent to after being changed to the public network mapping IP address and port numbers of the monitoring device；The Master Control Room clothes
The vpn tunneling of establishing that business device responds the monitoring device is requested, and the foundation of its vpn tunneling between the monitoring device is completed.
4. the method as described in claim 1, which is characterized in that establish UDP between the live streaming terminal and the monitoring device
The step of connection, further comprises:
Agreement is passed through come the cross-over NAT equipment that burrows by NAT between live streaming terminal and monitoring device, establishes UDP between the two
Connection.
5. the method as described in claim 1, which is characterized in that the step 2 further comprises:
Master Control Room server distribution monitoring device and live streaming terminal are respectively that vpn tunneling role server and vpn tunneling live streaming are whole
Role is held, issues configuration information to the live streaming terminal and the monitoring device, so that the live streaming terminal and the monitoring are set
It is standby that direct-connected vpn tunneling is established by UDP connection.
6. method as claimed in claim 4, which is characterized in that establish UDP between the live streaming terminal and the monitoring device
The step of connection, further comprises:
The public network that Master Control Room server obtains the live streaming terminal maps IP address and corresponding end slogan and the monitoring device
Public network mapping IP address and corresponding end slogan, the public network mapping IP address of the live streaming terminal and corresponding end slogan are sent to
The public network of the monitoring device is mapped IP address and corresponding end slogan is sent to client, for described by the monitoring device
Terminal and the monitoring device is broadcast live, the cross-over NAT equipment that burrows is carried out based on the IP address and corresponding end slogan respectively received, builds
Stand the UDP connection between the live streaming terminal and the monitoring device.
7. method as claimed in claim 5, which is characterized in that the step 2 further comprises:
It is vpn tunneling server that Master Control Room server, which distributes the monitoring device, issues the virtual net that vpn tunneling server uses
Card address and the vpn tunneling Microsoft Loopback Adapter address that uses of live streaming terminal to the monitoring device, issue carry out authentication user name and
Password gives the monitoring device；The monitoring device completes the vpn tunneling based on the message that the Master Control Room server issues
The configuration of server；Process is listened in starting on the private network IP address of monitoring device and private network port numbers, listens to the vpn tunneling
The vpn tunneling connection request of terminal is broadcast live；Subscription authentication and response are carried out after listening to vpn tunneling connection request；It is monitoring
PPP Microsoft Loopback Adapter interface is generated in equipment, which is that the vpn tunneling server that Master Control Room server issues uses
Microsoft Loopback Adapter address；
It is that terminal is broadcast live in vpn tunneling that Master Control Room server, which distributes the live streaming terminal, notifies the live streaming terminal vpn tunneling service
The IP address and port numbers of device be that the public network of the monitoring device maps IP address and public network port number, and issues and authenticated
Username and password gives the live streaming terminal, and the live streaming terminal establishes vpn tunneling connection request to monitoring device transmission, described
Monitoring device listens to after this establishes vpn tunneling connection request and carries out subscription authentication and response, and Master Control Room server is distributed
The live streaming terminal is handed down to the Microsoft Loopback Adapter address of vpn tunneling live streaming terminal；The live streaming terminal receives monitoring and sets
The Microsoft Loopback Adapter address that the standby vpn tunneling live streaming terminal issued uses, generates PPP Microsoft Loopback Adapter interface in live streaming terminal, complete
At the foundation of direct-connected vpn tunneling.
8. a kind of system for establishing direct-connected vpn tunneling in net work teaching system characterized by comprising
First link block establishes vpn tunneling with live streaming terminal and monitoring device respectively for controlling Master Control Room server；Control
UDP connection is established between the live streaming terminal and the monitoring device；
Second link block, for control the Master Control Room server based on the foundation it is with the live streaming terminal and described
Vpn tunneling, the live streaming terminal between monitoring device and UDP connection is established between the monitoring device, establishes the live streaming eventually
Direct-connected vpn tunneling between end and the monitoring device.
9. system as claimed in claim 8, which is characterized in that first link block is also used to:
The NAT device of control live streaming terminal generates the private network IP address and corresponding end slogan and public network mapping IP of the live streaming terminal
The mapping table of location and corresponding end slogan；
Private network IP address and corresponding end slogan of the control live streaming terminal based on the live streaming terminal, send out to the Master Control Room server
It send and establishes vpn tunneling request；
The NAT device of control live streaming terminal establishes the private network IP address and corresponding ports that terminal is broadcast live described in vpn tunneling request
The Master Control Room server is sent to after number being converted to the public network mapping IP address and port numbers of the live streaming terminal；The master control
The vpn tunneling of establishing that room server responds the live streaming terminal is requested, and completes it with described and building for terminal room vpn tunneling is broadcast live
It is vertical.
10. system as claimed in claim 8, which is characterized in that first link block is also used to:
The NAT device of control monitoring device generates the private network IP address and corresponding end slogan and public network mapping IP of the monitoring device
The mapping table of location and corresponding end slogan；
Private network IP address and corresponding end slogan of the monitoring device based on the monitoring device are controlled, is sent out to the Master Control Room server
It send and establishes vpn tunneling request；
The NAT device of control monitoring device establishes the private network IP address and corresponding ports of monitoring device described in vpn tunneling request
The Master Control Room server is sent to after number being converted to the public network mapping IP address and port numbers of the monitoring device；The master control
What room server responded the monitoring device establishes vpn tunneling request, completes its vpn tunneling between the monitoring device and builds
It is vertical.
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| CN201710481207.9A CN109120491A (en) | 2017-06-22 | 2017-06-22 | It is a kind of for establishing the method and system of direct-connected vpn tunneling in net work teaching system |
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| CN110740087A (en) * | 2019-09-18 | 2020-01-31 | 视联动力信息技术股份有限公司 | Message transmission method, terminal, gateway device, electronic device and storage medium |
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Application publication date: 20190101 |