Blocking Internet Access

Question:
Is there an easy way to block internet access on a system that has WinXP that does not require login out of windows?

I know that you can enable a password under the "Content Advisor", but I have someone who wants to leave their system on and logged into windows BUT they do not want someone getting on that system and surfing the web.

Any thoughts?

 

What type of Internet connection?

 

I have put 1.1.1.1 in for the proxy server in the Internet Properties. Go to Tools, then Internet Options, then on the Connection tab choose LAN settings. Check the box to use a proxy server and put 1.1.1.1 in for the address. Hope this helps...it worked for me.

 

It would be easier to just make seperate user accounts. That way you can just log off when you're done using the computer.

 

This is one trick, http://www.ezlan.net/iprel.html