Hi All,
I'm a computer technician with a problem on a customer's computer.
The computer is running Windows XP Home SP2 on a network with no DHCP server. The computer is statically mapped and has a true internet address. All settings: IP, Subnet Mask, Gateway, and DNS servers are set correctly. Windows Firewall is turned off and all other firewall/antivirus programs have been uninstalled.
The scenario is this: After a recent antivirus software upgrade the computer has experienced connectivity "problems". I have since removed the antivirus software (trend micro 2008 internet security) and a cisco VPN client in my attempt to remedy the issue.
Primary symptoms: Computer appears to have something in it which is blocking ports. For example, I cannot ping the computer [from my laptop], it does not respond. Also, when using the computer, I cannot pull up any web sites. [cannot display page error]. Yet, if I ping
www.google.com, I get a response [dns & connectivity is working]. If I try to pull-up a site using HTTPS, it works! It's like port 80 is blocked. In addition, the computer is a VNC server and I can no longer connect to it. If I boot up in SAFE mode, the computer can connect to web sites just fine and I can ping the computer successfully [from my laptop]. Yet, if a run MSCONFIG and turn EVERYTHING OFF and run a diagnostic startup [load basic services and drivers only] everything is blocked again. I've run hijack this, process explorer, winsock repair, and looked at netstat all to no avail...
It's like there is something in there blocking ports but I can't find it. Anyone have any suggestions?
Much appreciated.
--Rick
