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Posted by =?Utf-8?B?VGhvbWFz?= on September 13, 2005, 10:16 am
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I have a router that does NAT so why would I need to install an additional
firewall?
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Posted by Ted Zieglar on September 13, 2005, 10:24 am
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Without knowing the particular model of router you have or its capabilities,
the general answer is that a router won't alert you when something installed
on your computer is trying to connect to the internet nor will it prevent
the connection from being made.
--
Ted Zieglar
"You can do it if you try."
> I have a router that does NAT so why would I need to install an additional
> firewall?
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Posted by Chuck on September 13, 2005, 11:59 am
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>I have a router that does NAT so why would I need to install an additional
>firewall?
It's called layered security.
<http://nitecruzr.blogspot.com/2005/05/please-protect-yourself-layer-your.html>
http://nitecruzr.blogspot.com/2005/05/please-protect-yourself-layer-your.html
Do you have more than one computer? If one computer gets infected, in any way,
a personal firewall on the others will stop any infection from spreading within
your LAN.
And a NAT router won't filter outgoing traffic. A personal firewall can track
what applications are running on your computer, and can filter outgoing traffic
accordingly.
--
Cheers,
Chuck, MS-MVP [Windows - Networking]
http://nitecruzr.blogspot.com/
Paranoia is not a problem, when it's a normal response from experience.
My email is AT DOT
actual address pchuck mvps org.
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Posted by Steven L Umbach on September 13, 2005, 12:42 pm
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with a default block all rule, have higher throughput, have a larger number
of custom firewall rules and rules that can specify IP address/subnet/range
in rules for source and destination, have advanced logging and/or be able
to store larger logs, and possibly be able to do content filtering maybe
even with a subscription service. Some firewalls can do virus scans on
certain files before they are allowed into the network. A typical NAT/PAT
device however will do a good job of protecting the average home users
network from traffic that is not in response to traffic a computer on your
network initiated whether that traffic is legitimate or the result of a
worm, trojan, or spyware on your computers and is what probably 90 percent
of home networks are using that have broadband.. --- Steve
>I have a router that does NAT so why would I need to install an additional
> firewall?
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Posted by Jeff Cochran on September 15, 2005, 11:00 pm
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>I have a router that does NAT so why would I need to install an additional
>firewall?
NAT translates addresses. It does not perform any firewall functions.
Jeff
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