Safe DNS (Domain Name Resolution) method in internet browser

Abstract

The invention discloses a safe DNS (Domain Name Resolution) method in an internet browser. The method comprises the steps: 1) preparing N DNS servers; b) transmitting a resolution request; c) performing domain name resolution; d) recording a received return packet, and recording the quantity to be M; e) judging whether the formula M=0 is established, indicating that a browsing behavior is not completed if the formula is established; indicating that there is the return packet if the formula is not established; f) when a user is used for refreshing, executing the step c); if other web pages are changed to browse, executing the step b); g) taking an IP (Internet Protocol) with most repeating times, and taking the times as X at the same time; and h) judging whether the formula that X is more than N / 2 is established, if the formula is established, indicating the IP to be a safe address; if the formula is not established, indicating this browsing to be attacked by the DNS. According to the DNS method in the internet browser provided by the invention, the domain name input by the user can be guaranteed to point to a corresponding web site or a service, therefore, the attacking problem in the DNS process can be solved; furthermore, the forged IP address can be filtrated to retain a correct IP address.

Description

technical field [0001] The invention relates to a safe domain name resolution method in an Internet browser, more specifically, to a domain name resolution method that uses multiple domain name resolution servers to vote to ensure that the resolved IP address has relatively high security. Background technique [0002] DNS (Domain Name System) is the abbreviation of "Domain Name System". It is a hierarchical computer and network service naming system. Its main function is to convert IP addresses into specified strings, or to Converted to an IP address, the specified character string is called a domain name. Domain name resolution refers to using friendly and easy-to-remember domain names instead of boring and hard-to-remember IP addresses to locate corresponding computers or corresponding services in the network. Because any service or computer on the Internet has its own corresponding IP address to distinguish each other, it is difficult and inconvenient for customers to me...

AI Technical Summary

Problems solved by technology

[0006] From the above attack behaviors, it can be seen that the most fundamental reason for the threat to the user is that the forged IP address is returned, so that the correct domain name originally entered by the user points to the malicious website forged by the attacker, which poses a threat to the further security of the user

Images