what is dns cache

Reference: Flushing your DNS cache in Mac OS X and Linux Mac OS X clears the DNS cacheSelect the following commands according to the version of Mac OS X operating system:Mac OS X (Sierra) and later:sudo killall -HUP mDNSRespondersudo killall

Windows 2000 automatically starts the DNS Client Service, which provides the Client name resolution and cache service. Your DNS query results are cached locally. When configuring a DNS server, if you do not have a good grasp of this principle, some

Recently, the most powerful Internet vulnerability in history-the DNS Cache vulnerability. This Vulnerability refers to a vulnerable security system on the Internet in our applications. The root cause of poor security lies in design defects. By

The domain name is switched between the development machine and the test machine. After the hosts is modified, Firefox needs to be restarted to take effect. CTRL + F5 is useless. Find several extensions and finally find useful ones. Passing

Ubuntu clears dns cache. if nscd exists in the system, sudo/etc/init directly. d/nscdrestart: it doesn't matter if it doesn't. most of the methods accepted on the Internet are sudoaptitudeinstallnscdsudo/etc/init. d/nscdrestart, we can also directly

My visit to our company's website today is still a previous IP address, which reminds me of the DNS Cache problem.When I use NSLookup to view the returned result, it is a new IP address, but my local DNS has a problem. How to clear the local DNS, I

Yesterday wrote a Python script, the function is to crawl a page of the Google IP address and then write to the local hosts inside.But after writing it and running it, I found it wasn't Google. So I thought about whether to clear the DNS cache. But

win7 System cleanup DNS cache failure 1, first check our current network connection is normal; 2, if the network connection is normal, open the Control Panel, a small icon to view the way to find management tools and open it;

DNS cache serverExperimental Machine IP 192.168.1.202First of all:1. Yum install bind bind-libs bind-utils-y download package Installation2. cp/etc/named.conf /etc/named.conf.bak Copy a configuration file3. Vim named.conf into the configuration file(

We can use commands at the command prompt to clear the information in the DNS client cache. After the client executes the "Ipconfig/flushdns" command, the "ping" command appears after the letter is prompted to resolve the problem. It is worth

Specific steps:1.? Insert the installation disc and mount it, then install the bind package and the associated package. :2.? Edit the master configuration file . Master profile Named.conf is usually located in /etc/ directory, if you have

I have already studied bind's cache dns server. Today I have studied dnsmasq's dns Cache and found that the configuration of dnsmasq is much simpler. It is better for new users to get started with complex configurations than those of bind, after all,

First describes how to establish a high-speed DNS cache server on FreeBSD, citing the words in the Freebs D Chinese Manual: A cached domain name server is a domain name server that does not provide authoritative resolution for any domain. It simply

1. First, we also press the Win7 flagship computer keyboard Win+r shortcut to open the computer's running window, in the open running window, we enter CMD and click Enter, so you can open the Win7 flagship computer command Prompt window. 2. In

About CacheHow can this problem be solved?DNSSnoopyAbout Cache Cache poisoning attackers inject illegal network domain name addresses to the DNS server. If the Server accepts this illegal address, the cache is attacked, in addition, in the future,

Add a record in the/etc/hosts file, found that the ping host name after the resolution does not take effect, that is, the result of the ping is not the same as the IP written in the hosts.To view the ping command execution process through

Chrome: Enter chrome: // net-internals/# DNS in the address bar of the browser and press Enter. All current DNS caches are displayed on this page. Click "clear host cache ", all DNS caches can be cleared. Sometimes this method may not take effect

Disables the method of DNS caching by saving the following as a registry file and writing to the registry at run: Windows Registry Editor Version 5.00 [Hkey_current_usersoftwaremicrosoftwindowscurrentversioninternet Settings] "Dnscacheenabled"

1. First, we also press the Win7 flagship computer's Win+r shortcut to open the computer's running window, then we open the Run window to enter CMD and click Enter, so you can open the Win7 flagship computer command Prompt window. 2. In the

Refer to http://www.centoscn.com/CentosServer/dns/2014/0113/2355.html keepalive high-availability modeThis scheme is only suitable for small businesses, in the case of low-scale use, the resolution of a large amount of time or bind the best.If you