I am using SME 6.0.1 with DansGuardian as a fire wall and DHCP server. I have one workstation (Windows XP Professional, SP 2) that cannot access the Internet.
Every other computer in my LAN (Mac, Linux, Windows) can access the Internet. The WinXP Pro computer can log on to the domain and access all resources (printers, files) within the LAN.
I have applied the XP reg patch and checked. Digitally encript or sign secure channel data, Digitally encript secure data channel, and Digitally sign secure data channel are disabled.
I suspect but do not know how to prove that the request for web pages from this computer is getting out through the firewall but the web content is getting blocked when it comes back.
Suggestions please.
Thank you.