Still looking, but I have found one interesting discussion of this:This is from: http://www.windowsbbs.com/showthread.php?t=22814Quote:
One of the big problems I see with running more then one firewall is unfortunatly most people (average home users) dont have the so called, HORSE POWER SYSTEMS to handle many apps/programs running simultaneiously doing the same job, and even then it can still be a problem for the biggest system. Most conflicts caused within a system comes from more then one application trying to accsess the same thing at the same time. Lets face it, if one firewall is useing a certain service or port then the other cant so whats the point? The second firewall just sits and basicly waits it's turn until it can be granted accsess. By then the task is comleted and it becomes useless for the other to even try at that point.
Edit> Here is some more that I have found:
Quote:
Why the hello do you have more than one firewall running on your machine? - Are you that certain that General Motors,the CIA,the KGB, or the Country Music Association are really that interested in your musical tastes?? http://www.cybertechhelp.com/ubb/biggrin.gif,(Yeah,yeah, I know but the Belgians get a little carried away at times).
Not all firewall programs are designed to track precisely the same activies in order to stop unwanted upload/download behaviours. In fact,this can lead to uncertainty. The programs are designed to treat any activities that are outside of the parameters of the programmer's expectation; as potentially invasive or destructive and to block anything that is unforeseen and alert the user of a potential danger.
Running more than one firewall introduces an additional layer of unusual activity to the mix.
My suggestion? - If you are bound and determined to have a firewall choose one and get rid of the rest.
From: http://www.cybertechhelp.com/forums/...hp/t-2058.html
http://springfield.news-leader.com/c...ult-94914.html
has one more 'opinion' about multiple firewalls.
Here is a discussion in favor of multiple firewalls : http://techrepublic.com.com/5208-623...108374&start=0
