How to repair DNS hijacking perfectly? How to solve DNS hijacking and how to repair it perfectly

dns What about hijacking
It is necessary to modify the router settings .
1、 First, log in to the setting page of the router , The way is to open the browser , Then type in the URL 192.168.1.1, Then press enter , Admit to opening , The login interface will pop up , Enter user name and password ,（ The tacit user name and password are admin, If there is any correction before , Please refer to the revised ）.
2、 Enter the router user name and password , Click acknowledge at the bottom , You can log in to the router management interface , Then let's click on the left “ Network parameters ” Expand more settings , Then you can see “WAN Port setup ” Options. , Let's click on the left WAN The port setting can show the situation of dial-up connection at that time
3、 Pictured above , Let's click on the router WAN At the bottom of the interface “ High gear setting ”, As indicated by the arrow in the figure below . Click high-end settings , Access to the router DNS Set up the interface ,
From the above , We can obviously see the router DNS Address tampered , Because the router acquiesces in setting ,DNS The addresses are obtained actively , From the above picture , We can see its DNS The address is set manually , And filled in some tampered DNS Address .
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Official picture

Official address ：IIS7 Website monitoring 4、 So how to operate ？ It's easy to zoom in , We just need to put the following DNS Server and standby DNS Server address changed to normal , Of course, you can also remove it , And then “ Manual settings DNS The server ” Remove the front tick , Then click save below , Here's the picture ：
Through the above operations, we can achieve the tacit consent of the router DNS Set up , Removing manual means router DNS The router will take the initiative to obtain the address , It will take the initiative to get the nearest service provider DNS Address .
Fix the router login code
Because the router tacitly allows the login user name and password to be admin, Let's router DNS The reason for being tampered with , With the tacit consent of the user name, everyone knows , It has a lot to do with it . To ensure the router DNS The address was kidnapped and tampered again , We need to correct the router code as soon as possible , It's also easy to fix the login user name and password of the router , The way is ：
Click on the left “ System tools ”—>“ Modify the login password ” Enter the password setting page of the router . Enter the login user name 、 cipher , Click save after new user name, new password and password recognition .
dns Hijacking solution
DNS(DomainNameSystem, The domain name system ), On the Internet as domain names and IP A distributed database with addresses mapped to each other , It can make it easier for users to visit the Internet , Instead of remembering what can be read directly by the machine IP Number string . After the host name , Finally, you get the corresponding host name IP The process of address resolution is called domain name resolution ( Or hostname resolution ).DNS The protocol runs in UDP The agreement above , Use port number 53. stay RFC In the document RFC2181 Yes DNS There are specifications ,RFC2136 Yes DNS Dynamic update of ,RFC2308 Yes DNS Query the reverse cache for instructions . Every IP Addresses can have a host name , The host name consists of one or more strings , Strings are separated by decimal points . With the host name , Just don't memorize each one by rote IP The equipment IP Address , Just remember the relatively intuitive and meaningful hostname . This is DNS The function of the agreement . commonly Internet The general structure of host domain name is ： Host name . Three level domain name . Two level domain name . Cutting edge domain name .Internet The cutting-edge domain name of Internet The network association domain name registration inquiry serves as the Committee for network address allocation to register and manage , It's also for Internet Each host is assigned a unique IP Address . There are three big network information centers in the world ： Located in the United States Inter-NIC, Serve in the United States and other regions ; Located in the Netherlands RIPE-NIC, As the European region ; Located in Japan APNIC, Serve as the Asia Pacific region .
Plan 1 ： Manually modify DNS Server address
1. Open the start menu and find the control panel
2. Find the network in the control panel and open
3. Open the web and sharing center on the open page
4. Find the local connection on the current page and double-click to open
5. Open the local connection and click the feature bar
6. Find the agreement version on the features page 4 And click on features
7. In the agreement version 4 Select and input the following address on the feature page , The preferred DNS The server ：114.114.114.114; spare DNS The server ：114.114.115.115 Click on the confirmation
Plan 2 uses Tencent computer housekeeper DNS Choose the best
1. Open Tencent computer housekeeper toolbox
2. Find... In the toolbox DNS Optimization function
3. open DNS Select the best for testing
4. Suffer DNS Attack or threaten , Select one click correction or restore to start DNS