Application layer firewall on FreeBSD, is it possible ?

Marcin Jessa lists at
Fri Sep 2 02:43:16 PDT 2005

Maybe this can help as well:

On Tue, 30 Aug 2005 20:58:44 +0200
Daniel Dvořák <dandee at> wrote:

> Hi all,
> let me ask you for task "how to control p2p applications and their traffic
> with dynamic ports from user´s commputers on gateway".
> We are small wireless community and have shared access to internet for all
> members. Core members decided to control p2p traffic by default and to allow
> each person in individual way,
> after showing their knowledge of authorial low. :)
> But since many dc hubs, edonkey servers, bittorents web trackers and so on
> use dynamic not standard ports, how to control it ?
> Linux use l7-filter
> <BLOCKED::>  sourceforge freeware
> and , it is based on iptables, defination application protocols like
> ethereal project do.
> So, is there any way to do same application layer osi model firewall with
> FreeBSD gateway ?
> Of course, I tried to find on web, I have not been successful in searching
> so far.
> If my question is not right in this mailing list, if my question is annoying
> here, so I am sorry.
> Dan
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