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Article Title: explores the running status of DNS servers. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. In Linux, it also provides a popular BIND server, which is the most commonly used server software for building DNS servers. There are many articles about BIND insta

Because the company has colleagues in charge of Dalian, Shenyang Two cities, often in both directions back and forth, to each city, they have to manually change the corresponding network configuration, and to live in the field is the hotel, the hotel is automatically access to the Internet IP, but also the network settings canceled, really troublesome! So I thought of writing a batch process! To solve this problem! The main command to use is netsh.-The first method is to set up the network confi

DNS Overview: DNS is the domain Name System, which is a distributed database, organized into a domain hierarchy of the structure of the computer and Network service naming system. Its role is: to transform the domain name into a network can identify the IP address, the results of the query to save, and told the client. Second, DNS query process 1. Local resolut

What does router hijacking mean? Router hijacking, usually refers to the wireless network in the radio router, other users by cracking the wireless network password, thereby connecting to your wireless network, and then through the login router management interface to control the entire wireless network. In layman's parlance, the router is hijacked is, others can connect your wireless network, and login on the wireless router background management interface, you can arbitrarily modify the rout

Everyone is seeing this problem, the first reaction is not all think: Can't?Hey, I knew everyone's normal thinking is also the case.At first I thought it was supposed to be like this, but one thing that happened to me a while ago was that I changed this idea:the previous time the computer room DHCP service shutdown, we must not have started to use static IP, at this time because the teacher did not say that the DNS server on another machine, we take i

In the previous article (man-in-the-middle attack ARP poisoning), we discussed dangerous hacker attacks and practical ARP poisoning principles. In this article, I will first discuss how to detect and prevent ARP poisoning (or ARP spoofing) attacks, and then I will review other man-in-the-middle attacks-DNS spoofing.ARP cache attacks are very dangerous. It is important to create security awareness and analyze effective tools and policies among users. I

In Linux, it provides a widely used BIND server, which is the most common server software for building DNS servers. There are many articles about BIND installation. Now let's talk about the maintenance topic. How can we understand the running status of the DNS server? Is it busy and load-intensive? All this is important for system administrators. To learn about the running status of the

The configuration file is located:/Etc/sysconfig/network-ScriptS/ifcfg-eth0Device = eth0Onboot = YesBootproto = staticIpaddr = 192.168.0.3Netmask = 255.255.255.0Gateway = 192.168.0.1 Make the IP address take effect:/Sbin/ifdown eth0/Sbin/IFUP eth0 Configure DNS resolutionEcho "nameserver 211.98.1.28">/etc/resolv. conf Notify gateway to update information:/Etc/init. d/network restart ① Introduction DNS is th

Reference URL: http://www.unixmen.com/dns-server-installation-step-by-step-using-centos-6-3/DNS (Domain name System) translates host names or URLs into IP addresses. For example, if "www.unixmen.com" is in the browser,DNS server translates the domain name into an IP address associated with it, and DNS servers is used t

DNS OverviewDNS (Domain Name System)Role: Manage the "Household Register" of hosts-Host Name: IP address, which is a distributed city Database SystemOrigin: the earliest host resolution relies on the hosts file and is maintained by the NIC (Network Information Center). Later, the number of hosts became very large and the network became increasingly complex, resulting in DNS servers. Structure of the

What is DNS? What's the role of DNS? We hang on the Internet all day, the estimates for these problems are also somewhat vague, DNS is the domain Name system, the abbreviation, is a core service of the Internet, DNS, domain name resolution system, is not a simple service, and a wide range of global domain name resoluti

Several security questions about DNS Author: demonalex In the TCP/IP architecture, the most insecure is the data security at the application layer.Program/The remote buffer overflow and Script Injection of the operating system occur at this layer. Do you know how insecure it is ?! Today, I want to talk about the security of the DNS service, a protocol that is closely related to your daily network connec

Nbsp; (1) restrict name server recursive query function nbsp; disable recursive query to enable name server passive mode, when it sends a query request to the external DNS, it will only answer the query request of its authorized domain, without caching any external data, so it is impossible to suffer from cache poisoning (1) restrict name server recursive query Disabling recursive queries can enable the name server to enter the passive mode. when it

ConceptDefault dns lookup sequence for linux clients: Local DNS Cache → local hosts file → preferred DNS server (recursive) Linux DNS Server Query sequence:The DNS cache of the preferred server → the domain in which the preferred server is responsible → query information fro

Article title: detailed explanation of dns settings in Linux. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. DNS overview 　　 DNS is the Domain Name System, which can convert a Domain Name such as www.21php.com to an IP addres

Article Title: DNS server security strategy under solaris10. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. A DNS server is a server that provides domain name resolution services for hosts on the network. Although Solaris 10 comes with BIND 9.2.4, it is not a product of

When sending an email,PostfixUse the system's resolver (that isDNSClient, which can query the domain information function library from the DNS server) to obtain DNS information. When receiving A mail, the DNS of your domain must provide delivery information (MX or A record) for external queries so that other MTA can find your postfix server. Influence of

DNS is a very important basic service. Many applications are based on DNS services, such as the most commonly used HTTP browser. Many of my friends said they could not access the internet in the Forum. In fact, they could not resolve the FQDN name, that is, there was a problem with accessing the DNS service. If they only used IP addresses for access, for example,

This article divides the DNS into two kinds, one is the host or the embedded device DNS, one is the website domain name DNS, to tell the DNS after the fall the harm that brings.One: Router DNS hijackingYour local network connection DNS