Have XP pro on new Dell Laptop. Have a directway internet
network and a local network. Sharing the internet
connection through a proxy server (ccproxy)on port 808 at
192.168.1.1. MS internet sharing would not configure
correctly so went to ccproxy. All worked great until we
updated Norton Antivirus to 10.0.1.13. Now all computers
connected to the host cannot ping in or see the host
computer 192.168.1.1. The host computer can ping out to
everything. Does anyone know what XP account or network
settings norton changed on me?

hello. you can revert back to the original copy of xp. when you first boot up there is an option to restore from previous backup