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From: Andrea Rossato <mailing_list@istitutocolli.org>
To: netfilter@lists.netfilter.org
Subject: Re: portfw on iptables 2.4 kernel problem.
Date: Wed, 11 Dec 2002 12:26:17 +0100	[thread overview]
Message-ID: <3DF720D9.7030501@istitutocolli.org> (raw)
In-Reply-To: <014901c2a02a$0dbf59f0$0b00000a@nocpc3>

louie miranda wrote:
> I have an internel ftp server w/c i want to access over my linux router(gw)
> Its internel IP is 10.0.0.11 and port 21. My externel IP lets say
> 203.100.100.1.


echo "1" > /proc/sys/net/ipv4/ip_forward
iptables -A FORWARD -d 10.0.0.11 -j ACCEPT
iptables -A FORWARD -s 10.0.0.11 -j ACCEPT

iptables -A PREROUTING -t nat -p tcp -d 203.100.100.1 --dport 21 -j DNAT 
--to 10.0.0.11
ptables -t nat -A POSTROUTING -o eth1 -j SNAT --to-source 203.100.100.1


tha should work: it's working for me, at least.
Remember that forwarded traffic must be SNATed with the source (public) 
address of the forwarding box.
andrea



  parent reply	other threads:[~2002-12-11 11:26 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-12-10  8:56 portfw on iptables 2.4 kernel problem louie miranda
2002-12-10  9:01 ` Raymond Leach
2002-12-10  9:11   ` louie miranda
2002-12-10  9:01 ` Paulo Andre
2002-12-10  9:12   ` louie miranda
2002-12-11 11:26 ` Andrea Rossato [this message]
2002-12-12  3:11   ` louie miranda
     [not found] <FD8F124A387AD6119F7900A0D218B321561982@hslex01.hslbz.local>
2002-12-10  9:43 ` Rob Sterenborg
2002-12-10 11:00   ` Raymond Leach
2002-12-10 11:22     ` Jozsef Kadlecsik
2002-12-10 11:32       ` Raymond Leach
2002-12-10 11:52         ` Jozsef Kadlecsik
2002-12-10 12:12           ` Raymond Leach
2002-12-11  6:08       ` louie miranda
2002-12-11  6:20         ` Raymond Leach
  -- strict thread matches above, loose matches on Subject: below --
2002-12-11  7:32 Reckhard, Tobias
2002-12-11  8:05 ` Joel Newkirk
2002-12-11  9:00 Reckhard, Tobias
2002-12-11 14:25 ` Joel Newkirk
2002-12-12  7:31 Reckhard, Tobias
2002-12-12  7:33 Reckhard, Tobias
2002-12-12  8:09 Reckhard, Tobias
     [not found] <96C102324EF9D411A49500306E06C8D1021AE462@eketsv02.cubis.de >
2002-12-12  8:51 ` Rasmus Reinholdt Nielsen
2002-12-12 14:25   ` Joel Newkirk

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