> > You should never have two firewalls running at the same time.[color=blue]
>
> Why? Have you had problems doing it?[/color]

Three reasons:
1. You achieve no extra protection,
2. you incur the extra overhead of running two firewalls,
3. and you run the risk (probably small, but not zero) of conflicts
between them.
See [url]http://www.microsoft.com/athome/security/protect/firewall.mspx[/url]



Ken:

You and I discussed this in the XP NG several years ago (along with Alex).

[color=blue]
> 1. You achieve no extra protection,[/color]

Wrong. If two f/ws use different f/w technologies, there can be a benefit.
I use Vista's f/w for packet filtering at OSI levels 3 & 4, and ZA free for
application control at OSI level 7. There should not be a problem as they
work at different OSI levels.
[color=blue]
> 2. you incur the extra overhead of running two firewalls,[/color]

That has never been an issue in several years of using ZA free as a second
f/w in XP and then in Vista.
[color=blue]
> 3. and you run the risk (probably small, but not zero) of conflicts
> between them.[/color]

True, but it has never been a problem in my experience.
[color=blue]
> See [url]http://www.microsoft.com/athome/security/protect/firewall.mspx[/url][/color]

MS attitude is self-serving.