Re: Firewall definition

From: Matt Stevens (matt_at_zola.org.uk)
Date: 12/24/03

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    Date: Wed, 24 Dec 2003 22:57:55 -0000

    Yes, it is a byproduct of NAT's design and shouldn't be considered a
    firewall nor used in place of one.

    A firewall compares packets to a ruleset and drops (or allows) the ones it
    matches, NAT does not provide such a mechanism. So outgoing traffic from an
    internal network would be allowed (trojans, spyware etc.) with NAT, but not
    with a well configured firewall.

    Matt. Stevens

    "Stuart Halliday" <stuarth@ecs-tech.com> wrote in message
    news:3d57afa8.0312241417.2bdcbe59@posting.google.com...
    > Is a NAT Router technically a Firewall?
    >
    > A lot of Router Manufacturers seem to list NAT as a Firewall feature
    > when selling ADSL/Cable Routers.
    >
    > I say it's a byproduct of how NAT works rather than really a Firewall.
    >
    > I say to be a Firewall means its must actively probe packets, block
    > suspicious ones and alert the user.
    >
    > A colleague says just a Router with NAT is a Firewall.
    >
    > Who's right? :-)

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