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Nov 12, When XP looks in the cache, if it finds a positive entry, it immediately uses that DNS information and sends you to the requested web site.
Negative entries are those in which no match was found, and you end up getting a 'Cannot find server or DNS Error' in your browser. Similarly, when XP looks in the cache and finds a negative entry, it gives you the error message without bothering to go out to the site.
Negative entries can lead to problems. When you try to make a connection to a site that has a negative entry in your cache, you'll get an error message, even if the site's problems have been resolved and it's now reachable. You can solve this problem, though, using a Registry hack. By default, XP caches negative entries for five minutes. After five minutes, they're cleared from your cache. But if you'd like, you can force XP not to cache these negative entries, so that you'll never run into this problem.
The value may already exist. If it does, edit its value to 0. If you like, you can have the entries stay alive for one second by giving it a value of 1.
After you're done editing, exit the Registry. That command will flush your DNS cache? You can also use the Registry to control the amount of time that positive entries are kept in the DNS cache. By default, they are kept for 24 hours. If it's already present, just edit the value. For the value, enter the amount of time you want the entry to remain, in seconds, making sure to use Decimal as the base. Sometimes when you can't connect to a web site, the cause is a DNS problem.
There are things you can do to solve these problems, though. If you're having trouble connecting, to find out if DNS is a potential culprit first ping [Hack 52] the site to which you can't connect, by issuing the ping command like this at the command prompt or Run box, like this:. If you ping a site and it's live, but you can't connect to it with your browser, a DNS problem might be the reason. If you suspect you're having a DNS problem, take the following actions:.
Even if you don't recall adding listings to a HOSTS file, it still may contain listings, because some Internet accelerator utilities edit them without telling you. If it is, delete the entry, and you should be able to connect.
Check your DNS settings. Find out from your ISP or network administrator what yours are supposed to be. Then, to find out your current DNS settings, double-click on the problem connection in the Network Connections folder, choose Support Details, look at the bottom of the tab to find your DNS servers.
If they don't match what they're supposed to be, right-click on the problem connection and choose Properties. Flush your DNS cache. The problem may be related to your DNS cache, so flush it out. The cause may be your ISP. One possibility is that one of its DNS servers is down, and you're trying to access the down server. We just sent you an email. Please click the link in the email to confirm your subscription! OK Subscriptions powered by Strikingly. Return to site.
DNS domain name service is accountable for associating domain names with ip address, for example domain yahoo. This file defines which name servers to use. You want to setup Linux to browse net or run network services like www or smtp; then you need to point out to correct ISP DNS servers:. The process of converting domain names to IP addresses is called 'resolving.
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