Re: Ignore: Re: ipfw output FWD broken on 6.1 and newer?

From: Julian Elischer <julian_at_elischer.org>
Date: Fri, 04 Aug 2006 13:02:25 -0700
Andre Oppermann wrote:

> Gleb Smirnoff wrote:
>
>> On Wed, Aug 02, 2006 at 06:26:46PM -0700, Julian Elischer wrote:
>> J> >I haven't tried 7.x yet but has anyone seen
>> J> >the FWD command of ipfw running on 6.1?
>> J> >
>> J> >or anyone know of problems with it that may have been fixed on 
>> -current?
>> J> J> Just found the "EXTENDED" option for ipfw fwd.
>> J> J> Why we need that is wierd since it just allows it to act as it 
>> always J> used to and it never
>> J> aused any massive problems that I know of  (I committed it 
>> originally).
>> J> personally I consider removing the option and making it default or 
>> J> reversing it and
>> J> calling it
>> J> J> IPFIREWALL_FORWARD_CRIPPLED
>>
>> I'm suprised that you have noticed it only now. When Andre has 
>> introduced
>> this option that turns on a functionality that was present always 
>> before,
>> I was quite angry but everyone ignored me. This even went to release 
>> notes
>> as "new feature".
>
>
> The reason I did it this way was to prevent way too easy foot shooting by
> redirecting too much traffic somewhere else and killing the reachability
> of the host itself of other hosts on directly connected networks.  
> Yes, the
> two level approach has some drawbacks but also makes people much more 
> aware
> of what they are doing by having to explicitly specify the second kernel
> option.  To enable ipfirewall forwarding people have to compile their own
> kernel anyway, having them specify the second additional option is not 
> too
> much of a burden.  Although I agree that for experienced people it is 
> some
> additional work to enter the two dozen characters.
>

Andre, I committer the original fwd code.
I do not thnk that it is any more danger ous eot do this than to block 
yourself
off with the firewall in any other way.

If you don't mind I plan to remove that option and restore the original 
functionality
as default.
Received on Fri Aug 04 2006 - 18:02:29 UTC

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