NAT is not bridging.  IPFILTER does not work with bridging -- you will not
protect packets flowing through a bridge, only the local machine.
IPFIREWALL will filter bridged packets.

Tom Veldhouse
[EMAIL PROTECTED]

----- Original Message -----
From: "Mike Harding" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>;
<[EMAIL PROTECTED]>
Sent: Friday, March 09, 2001 9:19 AM
Subject: Re: 4.2-R, bridging and ipfilter


>
> IPFILTER works great - we use it on a T1 at work for about 20 people
> for NAT and transparent squid proxying and it never hiccups and there
> is no noticeable load on the system.  IPFW defaults to a 5 minute
> timeout on sessions, ipfilter to 5 _days_ so it behaves much more like
> what people expect.  I suspect that ipfilter is used for more
> 'industrial strength' uses.
>
> Also, the NAT in ipfilter is kernel based so it's quite fast.
>
> - Mike H.
>
>    From: "Thomas T. Veldhouse" <[EMAIL PROTECTED]>
>    Date: Fri, 9 Mar 2001 08:46:43 -0600
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>
>    IPFILTER is an alternative to IPFIREWALL.  As far as I know, IPFILTER
does
>    not work on bridged packets -- so you can not firewall you LAN
transparently
>    using a IPFILTER bridge.  IPFIREWALL does filter bridged packets.
However,
>    I don't believe the stateful rules processing is as robust.  I was
getting
>    errors about too many states and such -- so I went back to IPFILTER
using
>    IPNAT (using bimap).
>
>    Tom Veldhouse
>    [EMAIL PROTECTED]
>
>    ----- Original Message -----
>    From: "Christopher Schulte" <[EMAIL PROTECTED]>
>    To: <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>
>    Sent: Thursday, March 08, 2001 4:03 PM
>    Subject: Re: 4.2-R, bridging and ipfilter
>
>
>    > At 04:48 PM 3/8/2001 -0500, [EMAIL PROTECTED] wrote:
>    > >Has anyone gotten bridging and ipfilter to work together with 4.2-R?
>    >
>    > Question: do you mean IPFIREWALL and bridging?
>    >
>    > If so, yes.
>    >
>    >
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>    >
>
>
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>
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