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From: ro0ot <ro0ot@phreaker.net>
To: lartc@vger.kernel.org
Subject: Re: [LARTC] source policy routing going to wrong path
Date: Mon, 15 Nov 2004 17:26:41 +0000	[thread overview]
Message-ID: <4198E6D1.80309@phreaker.net> (raw)
In-Reply-To: <419804F9.4020902@phreaker.net>

Hi Tami,

I added the following and it helps...

ip rule add nat 1.1.1.10 from 172.16.0.1 table 1
ip rule add nat 2.2.2.10 from 192.168.0.1 table 2

Is the above two lines correct?

Regards,
ro0ot

Paul Zirnik wrote:

>On Mon, 15 Nov 2004, ro0ot wrote:
>
>  
>
>>Hi,
>>
>>Below is my Linux firewall network configuration: -
>>
>>eth0 - isp 1, IP: 1.1.1.10, Netmask: 255.255.255.252
>>eth1 - isp 2, IP: 2.2.2.10, Netmask: 255.255.255.252
>>eth2 - lan, IP: 172.16.0.254, Netmask: 255.255.255.0
>>eth3 - dmz, 192.168.0.254, Netmask: 255.255.255.0
>>
>>isp 1 gateway: 1.1.1.9
>>isp 2 gateway: 2.2.2.9
>>
>>
>>Below is my iptables rules: -
>>
>>echo 1 > /proc/sys/net/ipv4/ip_forward
>>
>>iptables -t nat -A PREROUTING -d 1.1.1.10 -j DNAT --to-destination 172.16.0.1
>>iptables -t nat -A PREROUTING -d 2.2.2.10 -j DNAT --to-destination 192.168.0.1
>>
>>iptables -t nat -A POSTROUTING -s 172.16.0.1 -j SNAT --to-source 1.1.1.10
>>iptables -t nat -A POSTROUTING -s 192.168.0.1 -j SNAT --to-source 2.2.2.10
>>    
>>
>
>POSTROUTING (as the name says it) happens after all routing discussions
>are made, just before the paket reaches the line.
>So you need some more ip rules to push the pakets on the right way.
> 
>  
>
>>When I perform a traceroute from a workstation with the IP address of
>>192.168.0.1 and gateway 192.168.0.254, I can see the result of the traceroute
>>going through the 1.1.1.9 gateway, why?  It suppose to SNAT to 2.2.2.10 via
>>2.2.2.9 gateway.
>>    
>>
>
>greets,
>    Tami
>_______________________________________________
>LARTC mailing list / LARTC@mailman.ds9a.nl
>http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/
>
>  
>



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  parent reply	other threads:[~2004-11-15 17:26 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-11-15  1:23 [LARTC] source policy routing going to wrong path ro0ot
2004-11-15  9:41 ` Paul Zirnik
2004-11-15 17:26 ` ro0ot [this message]
2004-11-15 17:30 ` Chris Bennett

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