Archived from groups: microsoft.public.windowsxp.basics (
More info?)
In news:96783407-A1BA-4748-B095-8A3B7481ECB5@microsoft.com,
kallu <kallu@discussions.microsoft.com> typed:
> Before was using Sygate Personal firewall. But after updating
> with
> WinXP Service Pack2 I am using only the default Windows
> firewall. Do
> I really need to use third party firewall in addition? Thanks
You don't need to run two firewalls, but I would switch back to
Sygate, which is better than the built-in Windows firewall. The
Windows firewall monitors incoming traffic only. Almost any
third-party firewall will also monitor outbound traffic, stopping
rogue programs trying to call home, and is a better choice.
You achieve no extra protection by running two firewalls, you
incur the extra overhead of running two, and you run the risk
(probably small, but not zero) of conflicts between them.
See
http://www.microsoft.com/athome/security/protect/firewall.mspx
which includes the following:
"Q. Should I use both the built-in firewall and a software
firewall from a different company on my Windows XP computer?
"A. No. Running multiple software firewalls is unnecessary for
typical home computers, home networking, and small-business
networking scenarios. Using two firewalls on the same connection
could cause issues with connectivity to the Internet or other
unexpected behavior. One firewall, whether it is the Windows XP
Internet Connection Firewall or a different software firewall,
can provide substantial protection for your computer."
Also note that if you update your third-party firewall to a new
version, the update routine will probably turn it off first. If
the Windows firewall isn't running, you will temporarily be left
with no running firewall, which is very dangerous. So turn on the
Windows firewall temporarily before doing maintenance on your
third-party firewall.
--
Ken Blake - Microsoft MVP Windows: Shell/User
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