Recently, I am finding a lot of warning entries in my Windows
2000 DNS server's event log. These messages are generated every five to ten
minutes and they say something like "The DNS server encountered an invalid
domain name in a packet from 213.254.204.197. The packet is rejected ".? The
IP address is not the same all the time and changes frequently. I have checked
my DNS settings and every thing looks Okay. I have also checked Microsoft
knowledge base and it has not been helpful.
I was wondering if there is a way to fix this problem and block these invalid
domain names at our Cisco 2801 router before they get to our LAN.
I am not running IOS Firewall on this router. We use a PIX Firewall before the 2801 router.
Thank you,
Hossein Kholghi
Abington Friends School
