Ok, this is the most bizarre network problem I've ever seen. I've got PC running Windows 2000 Pro. I am having problems connecting to local network resources, specifically, I cannot ping anything on the LAN except my own address. I cannot even ping my default gateway (router), my server, or other PC's. Other PC's can ping the gateway, the server, and each other. NO pc's can ping this Windows 2000 pro. The bizarre part is that I CAN ping outside addresses such as www.yahoo.com
, and I can surf the web all day long with no errors whatsoever. I have only 1 DHCP server from which all PC's get their address. The Windows 2000pro PC in question is on the same subnet (ip=192.168.1.86, gw=192.168.1.1, mask = 255.255.255.0) I have other Win2000 pro PC's that work just fine.
When I run a TRACERT to www.yahoo.com
, the first hop (my gateway) say's "request timed out", but then all the other hops out in Internet world come back with a reply.
This is just 1 computer acting this way, all other pc's can ping local gateway, have full internet access, etc.
I've got Norton Antivirus 7.6, with updates from 11/5/03, ran full system scan - it found and cleaned the backdoor.coreflood virus. Subsequent scans after rebooting find no viruses but it seems there is some sort of denial of service going on.
Any ideas let me know!