Sure, it's possible. I am using an IPSec trick to disallow web browsing for some of our kiosk and clinic machines. You can use the steps in the following articles to either block all web traffic and allow only certain ones, or simply block certain websites and allow all other traffic. Works great for blocking myspace and facebook J Here are the links to the steps on how to make it possible. Shoot me an email if you have any problems. It's not hard at all. Be warned though, this is not a firefox specific fix, it will block surfing to those websites in both IE and Firefox. http://www.petri.co.il/block_internet_but_allow_intranet_with_ipsec.htm http://www.petri.co.il/block_web_browsing_with_ipsec.htm This should get you going in the right direction. Good luck! Michael P. SDSU From: gptalk-bounce@xxxxxxxxxxxxx [mailto:gptalk-bounce@xxxxxxxxxxxxx] On Behalf Of Darren Mar-Elia Sent: Friday, June 13, 2008 1:43 PM To: gptalk@xxxxxxxxxxxxx Subject: [gptalk] Re: Using GP to block certain websites Dave- I think you're stuck with using a Proxy Server for this kind of control in Mozilla browsers. Of course, IE has the content ratings stuff that you can use for it. Darren From: gptalk-bounce@xxxxxxxxxxxxx [mailto:gptalk-bounce@xxxxxxxxxxxxx] On Behalf Of Dave Palombi Sent: Friday, June 13, 2008 1:15 PM To: gptalk@xxxxxxxxxxxxx Subject: [gptalk] Using GP to block certain websites Hello, I want to know if there is a GP to block certain websites when people use a Mozilla browser. Thanks, Dave