Re: Complex ruleset questions

This is a discussion on Re: Complex ruleset questions within the IPFilter forums, part of the System Security and Security Related category; Thus spake Thomas Quinot (thomas@cuivre.fr.eu.org) [27/06/03 13:30]: > Does this work? ipfilter is ...


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Old 06-27-2003
Damian Gerow
 
Posts: n/a
Default Re: Complex ruleset questions

Thus spake Thomas Quinot (thomas@cuivre.fr.eu.org) [27/06/03 13:30]:
> Does this work? ipfilter is not supposed to support multiple heads for
> the same group, AFAIK.


As I found out /moments/ after I sent this (and followed-up to the list), no
it doesn't.

When I composed the message, the ruleset wasn't in a form that it could be
tested. I cleaned it up, and found out that this is indeed true. My master
plan would fail. :(

> > block in log on {rl0,rl1} from any to any head 20
> > <service-specific forwards here>

>
> skip 2 in on rl0 from any to any
> skip 1 in on rl1 from any to any
> skip 1 in from any to any
> block in log from any to any head 20


Hmmmm.... It'll work in theory, but I have a large number of rules in
between the two things, and it seems a little fragile. It's better than
specifying the allow rules twice, but means that any rule insertions between
the 'skip' rules and the 'head' rule will break the skips. :(
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