Once upon a time, before I installed the Cisco VPN Client on one of our LAN computers running Windows XP SP2, that computer could be used to: browse the internet with IE6 and Firefox, be accessed by RDP over the local LAN, and otherwise access network resources. Then, for reasons we are not clear of, the CISCO VPN client ceased working, the internet sites could not be accessed by IE and Firefox, other computers on the LAN could not connect to the computer. In addition, it will not respond to Ping by IP address and it certainly will not respond to Ping by name - the name is not resolved and we see "unknown host". We have uninstalled the CiscoVPN Client completely. This made no difference. We have used both DHCP and static IP addressing - no difference. When we ping various website, such as www.fool.com
, we get the Name resolved, but no replies (request timed out).
--- It looks to me like there is something blocking selected, and maybe arbitrary, network and internet access which involves routing and blocks all avenues for external activity to access and control the computer.
Other computers on LAN are not affected - problems are local to the one computer.
What do I need to do to recover network and internet accesses on this computer?