QoS for ADSL customers

william(at)elan.net william at elan.net
Tue Dec 6 17:34:42 UTC 2005



Somebody else emailed me privately link for L7 filtering with linux
(its all experimental and requires custom linux patches for now):
  http://l7-filter.sourceforge.net/L7-HOWTO-Netfilter

Also in previous post it was supposed to be:
   For ebtables it is http://ebtables.sourceforge.net (this is
   needed if you want security when building custom linux bridge)

On Tue, 6 Dec 2005, Ejay Hire wrote:

> There are quite a few modules for iptables that will reach
> up to Layer 7, including several specifically for file
> sharing applications...
>
> And one really nifty one that makes non-passive ftp work
> through NAT.

These are "action" modules - they receive the data when it matches
particular netfilter rules and then do something in place where you
could have accept or reject. But for L7 filtering you need module
that can be used in place of "source" or "destination" rules. Yes
it is possible to build those with linux (like ipset - see
ipset.netfilter.org - its pretty cool), but I've not seen ones for
L7 classification - at least not public open source ...

The place to find more about iptable is http://www.netfilter.org
For iptables it is http://ebtables.sourceforge.net (this one you
need only if you're building custom linux bridge).

--
William Leibzon
Elan Networks
william at elan.net



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