Slow DNS Lookups
Running CentOS 4.4. Whenever I go to a web URL or do any network activity outside of the LAN the lookup is extremely slow on the server. It takes from 3 - 10 seconds. Once it looks up though the speed is good, for example I can download files at 150KB a second. At first I though it was my firewall/router, but none of the other computers are experiencing this problem. I looked at the internal firewall built into CentOS and as I confirmed it is disabled, also Linux Enhanced Security is also disabled. Does any body have a clue what is going on? This didnít use to happen.
This happens not only for HTTP traffic. For example, when I remote SSH into the sever it pops up the username and password field instantly, but it takes 5 - 10 seconds to authentic and show the prompt. This didnít use to be the case, it used to authentic almost instantly.
Thanks for any help, comments.