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 From:  Pablo Alonso <m0n0mza at gmail dot com>
 To:  Sven Brill <madde at gmx dot net>
 Cc:  m0n0wall at lists dot m0n0 dot ch
 Subject:  Re: how share a internet connection between interfaces like forward in iptables ?
 Date:  Mon, 2 Jan 2006 11:46:34 -0300
yes, have a razon, sory, here still work with linux 386 , not bsd for
the moment, ok, here go the explication....

i wont make this, but with m0n0wall.

iptables -A FORWARD -i eth0 -o eth1 -d -j ACCEPT

other example ..but changing the interfaces ...

iptables -A FORWARD -i eth1 -o eth0 -s -j ACCEPT

#eth1 interface local
#eth0 interface external

the idea es retrasmit packets between 2 or more networks interfaces,,
... given internet access to the people what i want .


people thanks for you time !!.


2005/12/31, Sven Brill <madde at gmx dot net>:
> Pablo Alonso wrote:
> >if I want forward, from my pppoe connection to an specific ip in other
> >interface, like forward in iptables, how i do ?
> >sample: iptables -A FORWARD xxxx
> >i have defined my interfaces, but i don't know how establish the rules ?.
> >some howto ?
> >
> >
> >
> You need to be a little more specific. "FORWARD" in your example is a
> chain in the filter table, and generally used in either outbound or
> inbound NAT. if I understand you right, you want inbound NAT, meaning
> someone hitting your external IP on port 80/tcp, and the connection is
> forwarded to a web server on your LAN or DMZ.  If that is the case,
> click on NAT in the GUI (under Firewall), and define your inbound NAT
> rule (and check "Auto-add a firewall rule to permit traffic through this
> NAT rule" to let the traffic pass). Outbound NAT  should already be
> active on the LAN interface out of the box.
> If this is not what you want, be a little more specific and give a full
> iptables example and a description of what you are trying to accomplish.
> Happy new year
> Sven