Network access method and system based on DNS

Abstract

The invention provides a network access method and system based on a DNS. The network access method comprises the steps of pre-storing domain name configuration files recording domain name information in the server; downloading the domain name configuration files from the server before initiating a network access request; initiating the network access request according to the domain name information recorded by the domain name configuration files. In the technical scheme, a multi-domain-name information mode is adopted for access, when a front end executes the network access request, the network access request is initiated by utilizing multiple domain name information recorded in the domain name configuration files downloaded from the server, and the influence brought by DNS hijacking or breakdown can be effectively reduced. In addition, load fluctuation and snow slide phenomena of a default IP server during accessing in a default IP information mode can also decreased, and the success rate of service access can be improved.

Description

technical field [0001] The invention relates to the technical field of the Internet, in particular to a DNS-based network access method and system. Background technique [0002] A domain name is the name of a computer or computer group on the Internet consisting of a string of dot-separated names. DNS (Domain Name System, Domain Name System) is a distributed database on the Internet that maps domain names and IP addresses to each other, enabling users to access the Internet more conveniently without having to remember the IP number string that can be directly read by the machine . DNS server, that is, domain name resolution server, refers to a server that saves the domain names and corresponding IP addresses of all hosts in the network, and has the function of converting domain names to IP addresses. [0003] In a specific network range, operators or network attackers modify the DNS server configuration in the network to resolve the domain name requested by the user to the...

AI Technical Summary

Problems solved by technology

After confirming the default IP information, if no DNS hijacking or failure occurs, the front-end application still uses the domain name to access the business server. At this time, the network access request will not be sent to the default IP information. When DNS hijacking or failure occurs, it will Switch to the default IP information to access the service. At this time, the load of the default IP server will increase sharply, causing the resources to be exhausted in a short time. This will easily lead to server avalanche, which will cause the server to crash rapidly.

[0006] To sum up, in the process of DNS-based network access, the existing technology is vulnerable to DNS hijacking or failure, resulting in a low success rate of final service access

And the use of default IP information for access is easy to cause the problem of complex update operation of default IP information and unbalanced load of default IP server, which affects the success rate of access

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