DNS Problem, is virus???

[DSOFT]

HI: I have a LAN with Windows XP clients and one Windows 2000 Server (active directory), the LAN have a xDSL connection to internet via a Linux box, the DNS of the XP points to the Windows 2000 Server anda have as the Default gateway the IP of the linux,the winwdows 2000 Server have as secondary DNS the ISP DNS.

I have problem that avery time the DNS not respond, i have connection to internet becouse i can PING to IP in internet, but cant resolve via DNS, after minuts, all are OK, annyone can help me?

Thanks

 

[BillieWhiskers]

Proxies or Hosts file?

Some machines on our network had the Hosts file and or the Proxie settings in IE hijacked. It made it to where they couldn't access sites on the internet.

Let us know what you find...

 

[DSOFT]

But, after several minutes the access to internet is ok, why?

I dont have proxies, have fireall with NAT