Catastrophe-resistant campus network DNS gateway
A campus network and gateway technology, applied in the direction of network connection, data exchange network, digital transmission system, etc., can solve the problem that users on campus cannot analyze resources outside the campus.
Pending Publication Date: 2018-05-25
CHINA UNIV OF MINING & TECH (BEIJING)
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Problems solved by technology
[0004] The purpose of the present invention is to provide an anti-catastrophe campus network DNS gateway. The present invention can effectively solve the problem that the campus network DNS authorized by the education network cannot resolve resources outside the school when the working state of the education network outlet line is catastrophic. It greatly improves the usability and anti-disaster ability of the campus network DNS, and provides a good guarantee for the stable operation of the campus network
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[0012] Below in conjunction with accompanying drawing and specific embodiment, the present invention is described in further detail
[0013] (1) Control processor (103), responsible for processing the information of network port 1 (101), network port 2 (104), and detection module (102), providing anti-catastrophe DNS list when a catastrophe occurs, replacing the original Education network authorizes DNS, guarantees user's normal network communication; Selected model is IBM X3650M4, and system is the Linux that supports network transparent bridging, SNMP, IPTABLES through compiling, and the Linux kernel version used among the present invention is 2.4.31. The program uses the linux timing task (crontab) to set it to check every 2 minutes to ensure the availability of DNS.
[0014] (2) The first network port (101), including a DNS access gigabit network port, used for bidirectional transmission of DNS data; SFP-GE-T gigabit electrical port SFP module, SFP-GE-T gigabit The mega-p...
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The invention discloses a catastrophe-resistant campus network DNS gateway. When the education network line of a campus network outlet generates failure, data flow of a campus network DNS authorized by an education network breaks off, therefore the campus network DNS cannot conduct resolution on off-campus domain name addresses, and visits of on-campus users to off-campus websites are affected. The gateway mainly includes a control processor, a first internet port, a second internet port and a detection module. By designing the catastrophe-resistant DNS gateway, when the education network outlet line generates a catastrophe, the line is automatically switched to a DNS catastrophe working mode, under the mode, according to a source address routing strategy, the DNS is mapped to a catastrophe DNS address again to conduct domain name resolution, the problem is solved that the on-campus users of the campus network DNS authorized by the education network cannot use the campus network DNS toconduct resolution on off-campus website resources due to the catastrophe of the education network outlet line, and the catastrophe-resistant ability when the campus network DNS is deployed is improved.
Description
technical field [0001] The invention relates to a disaster-resistant campus network DNS gateway, which involves source address routing technology and SNMP technology. Background technique [0002] DNS (Domain Name System) domain name resolution system is mainly used to solve the problem of matching the www URL of a website on the Internet with its corresponding IP address, and is one of the basic core services of the Internet. China Education and Research Computer Network (referred to as Education Network) is a national academic computer network invested and constructed by my country, managed by the Ministry of Education, and led by universities to undertake the construction and operation. When a university builds a campus network, it usually chooses the campus network DNS authorized by the education network to provide domain name resolution services. The data flow of the campus network DNS authorized by the education network flows out and in through the egress line of the e...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H04L29/12H04L12/66H04L12/721H04L12/24
CPCH04L12/66H04L41/0213H04L41/0654H04L45/72H04L61/4511
Inventor 霍跃华孙雁宇李栋
Owner CHINA UNIV OF MINING & TECH (BEIJING)