DNS spoofing technology principle and Security Protection Technology
Overview: What is DNS spoofing?DNS Spoofing is the art of changing the original IP address of DNS. For better understanding, let's look at an example. If you want to use your browser to search for some information on Google, you can enter www.google.
REM file name set DNS name server address Bat batch script file. batREM Use set the DNS name server address for the wireless network connectionnetsh interface ip add DNS "Wireless network connection" 8.8.8.8netsh interface ip add DNS "Wireless network connection" 8.8.4.4netsh interface ip add
I read the Hihocoder topic and the explanation after finishing this article
Problem Analysis
This problem is referred to as the "longest overlapping K-second string problem", which asks for the maximum length of all substrings that meet the requirements: the substring repeats at least k times in the string, where the substrings can overlap (partially).
The solution is given in the tip of the original problem solving method, using the suffix array
Standard DNS software:BIND: Berkeley Internet Name Domain
Associated software packages: software packages starting with BindBind-libs provides library files for some peripheral toolsBind-utils client command line toolBIND server package, used to provide DNS ServerBind-chroot, do not install it. This program is very strange.Bind-devel Development KitBind-libbind-devel Development KitBind-sdb puts
Dns:domain Name System
The main solution is domain name and IP conversion, and the early is mainly the manual configuration of IP and domain name corresponding relationship--hosts
Related concepts:
Namespaces: He defines the hierarchy of domains used for organization names
Resource record Resouce record: It maps a DNS domain name to a specific type of resource information that is used for registering or resolving names in
The IP address of the host can be mapped when the host name is Ping, and vice versa. Configure and specify that the DNS server can quickly deploy the cluster without requiring each host to modify the hosts file to resolve the IP and host names. In Linux, DNS is implemented with BIND.
Environment:
Machine IP machine name use
10.190.60.5 hadoop01.ftgov--DNS host
The named process on the DNS server is always suspended. Please kindly advise! -- Linux Enterprise Application-Linux server application information. For details, refer to the following section. Jun 2 19:26:10 dns named [22520]: client 10.52.4.71 #37104: RFC 1918 response from Internet for 2.8.52.10.in-addr. arpa
Jun 2 19:26:12 dns named [22520]: client 10.52.4.8
Overview: What is DNS spoofing?DNS Spoofing is the art of changing the original IP address of DNS. For better understanding, let's look at an example. If you want to use your browser to search for some information on google, you can enter www.google.com in the address bar and press Enter.So what is going on behind this? Generally, your browser will send a request
Overview: What is DNS spoofing?
DNS Spoofing is the art of changing the original IP address of DNS. For better understanding, let's look at an example. If you want to use a browser to search for some information on Google, you can enter the information in the address bar without a doubt.
Www.google.com
And press Enter.So what is going on behind this? In general,
DNS Service
DNS: Domain Nsme Service
Role: Resolving the domain name to IP (forward parsing) or resolving IP to a domain name (reverse parsing)
Classification of DNS top-level domains:
Organization domain:. com. net. org .....
Country domain:. CN. tw. JP .....
Reverse domain: Resolve IP to Domain name
DN
Improve the speed of web pages, generally we will choose to use a CDN, using the "nearest principle" to allow users in the shortest possible time to obtain the server resources, the actual application of the use of CDN to improve the speed of website access is also the most obvious effect. This is why foreign space is far less open than the domestic host's speed of access to the reason.We know that when a user visits a website, the domain DNS resoluti
Source: http://369369.blog.51cto.com/319630/812889Most of the network traffic is based on TCP/IP, and TCP/IP is based on the internet, so when the computer communicates on the network, it can only recognize IP addresses such as "202.96.134.133" and not know the domain name. We can not remember more than 10 IP addresses of the site, so when we visit the site, more is to enter the domain name in the browser address bar, you can see the required page, this is because there is a "
Suffix array, prefix Array
Suffix Array
A suffix array is an array of all suffixes of a text string from small to large. For details, see Liu rujia's algorithm competition training guide.
The AC automatic machine can handle text matching of multiple templates, while the suffix array can also handle text matching of mul
Iv. Design and Implementation of 12306 ticket snatching Software Based on HTTPS protocol-horizontal DNS concurrent query and sharing, https12306
I. Design and Implementation of 12306 ticket snatching Software Based on HTTPS protocol -- Implementation Effect2. Design and Implementation of 12306 ticket snatching Software Based on HTTPS protocol-related interfaces and data formats
Iii. Design and Implementation of the 12306 ticket snatching software base
effect:1. On the "_msdcs. your domain" right-new domain "DC"-New domain "_tcp".2. Right-click on _tcp-New host (A)-Enter _LDAP,IP to fill in the address of the DNS server.3, under the TCP directory, right-click, select "Other new records"; Create a suffix named "_tcp.dc._msdcs.guanwei.org" SRV Record "_ldap"; point to your domain controller;Where, "throld.com" is my domain name, 192.168.2.192 is the
Install DNS suite: bind Finally, all the nonsense is finished! I believe you are a little tired !? The Bird brother is very tired, because the arm, shoulder and neck pain problems are quite serious... sorry! What are you doing here !? @ _ @ Well, we are finally going to install the suite required by DNS! As mentioned above, the DNS we want to use is the BIND (Ber
Transferred from: http://www.acmerblog.com/suffix-array-6150.htmlIn string processing, the suffix tree and the suffix array are very powerful tools, in which the suffix tree is known more, the suffix array is very rare in the domestic data. In fact, the
DNS Proxy configuration
2.4.1 DNS Proxy Introduction1. OverviewDNS proxy refers to the start of the DNS agent on the firewall, so that when there is no DNS server inside the LAN, intranet clients can connect to the external DNS server through the firewall, after the correct
Transferred from: http://369369.blog.51cto.com/319630/812889The principle of DNS and its parsing processWonderful anatomyMost of the network traffic is based on TCP/IP, and TCP/IP is based on the internet, so when the computer communicates on the network, it can only recognize IP addresses such as "202.96.134.133" and not know the domain name. We can not remember more than 10 IP addresses of the site, so when we visit the site, more is to enter the do
Dns.c
Copy Code code as follows:
/*
* DNS Query Program on Linux
*
* author:ismdeep@live.com
*
* */
Header Files
#include #include #include #include #include #include #include
List of DNS Servers registered on the systemChar dns_servers[10][100];int dns_server_count = 0;Types of DNS resource records:)
#define T_A 1//ipv4 Address#define T_
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