release dns cache

Source: http://book.51cto.com/art/200801/64743.htm Http://www.xxeb.com/site/domain/20070314/23.html Author: Release Date:   When the DNS client needs to query the name used in the program, it queries the DNS server to resolve the name. Each query

What should I do if my website is hijacked? Whether the domain name is walled. How to detect DNS pollution. Website hijacking Detection Website opening speed detection. Checks whether a website is hacked, hacked, changed its title, or hacked.   I

DNS servers -- An Internet Achilles 'heel DNS server-a critical weakness of the Internet (Endurer Note: An/one's Achilles heel fatal injuryAchilles is one of the Greek gods, "Achilles ". It is said that Achilles's ankle seems very small, but it is a

I use dial-up connection to the Internet under Linux, frequent dialing disconnection causes the problem of DNS. How do I use shell commands to clear the DNS cache under the Linux/unix release? Under Ms-windows, you can use the ipconfig command to

Users who frequently access the Internet may often go to large websites such as Sina and Sohu. They only need to enter their URLs in the browser to access the website. It seems very simple, but technically speaking, but it contains a complicated

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,

Some time ago, I changed the server to using ipfilter + ipnat + dhcp -- ipfilter + ipnat packet filtering, forwarding, and DHCP server architecture notes under freebsd5.4. However, I recently felt that the server is always offline, I opened another

DNS cache poisoning attacks refer to attacks that trick the DNS server into believing the authenticity of forged DNS responses. This type of attack aims to redirect victims who depend on this DNS server to other addresses, for example, redirect all

1. Cache The corresponding engineers are too familiar with caching, which is too convenient. the way resources or data are obtained is omitted, and the cache is directly the fastest place for user access, which also reduces the pressure on the

The server was replaced by a previous arrayipfilter+ipnat+dhcp--freebsd5.4UnderIpfilter+ipnatPacket filtering, forwarding, andDhcpServer Schema Notes, but recently felt that the server will often drop the line, on the server to open aDnsCaching