How To Solve Dns Problem

How To Solve Dns Problem-10
You should also try to ping the DNS server from a few random machines.

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Windows will return the name and IP address of the DNS server that resolved the name (although the DNS server's name is often listed as Unknown).

It will also provide you with the fully qualified domain name and the IP address of the host you specified. First, it allows you to verify that name resolution is working.

About a week ago, someone called me because every time they would try to visit certain Web sites they were redirected to a malicious Web site instead.

I initially suspected a DNS poisoning attack, but ruled out such an attack because only one computer was affected.

If the name resolution request is forwarded to other DNS servers, those servers are not listed. If your primary DNS server is having problems, try using an alternate.

If name resolution begins working after you switch DNS servers, you have confirmed that the problem is indeed related to the DNS server and not to some external factor.If so, the problem could be related to a router failure or a DHCP configuration error.Organizations hosting high demand Web servers sometimes try to distribute the workload across multiple identical Web servers by using a load balancing technique called DNS Round Robin.Even though many DNS servers use root hints for Internet name resolution, some use forwarders to link to an ISP's DNS server.And if the ISP's DNS server goes down, Internet name resolution will cease to function as the entries in the resolver cache expire.After you have determined that basic connectivity still exists, the next step is to determine the scope of the problem.Are Internet name resolutions failing or are local name resolutions failing too?If your DNS server does use forwarders, you can try pinging the server to see whether it's online.You might also have to call the ISP to see whether it's having any DNS issues and to make sure that the IP address you are using in your forwarder is still valid.DNS is one of the most essential services on any Windows network.Active Directory can't function without DNS, and it's is also used by any number of other network functions.


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