Please help redirecting locally generated traffic

Please help redirecting locally generated traffic

[aragonx]

I have a situation where an application on my box wants to talk to the
wrong IP address.  The developers will gladly fix the bug in the next
version but I need a quicker fix.

Here is the situation.  I have traffic that is going to 10.0.0.1 and needs
to got to 198.162.0.1.  It's created on the machine that I need to do the
routing on.  It's a Linux machine using iptables 1.2.9.  Neither SNAT or
DNAT seem to work.  DNAT wants to work on the incomming packets but does
what I need.  SNAT will work on the outgoing packets but doesn't do what I
need.  Mangle seems to only want to send packets to my 127.0.0.1.

Any help would be appreciated.

Will


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Re: Please help redirecting locally generated traffic

[Grant Taylor]

On 07/19/07 17:45, aragonx@dcsnow.com wrote:
> I have a situation where an application on my box wants to talk to 
> the wrong IP address.  The developers will gladly fix the bug in the 
> next version but I need a quicker fix.

Typical...

> Here is the situation.  I have traffic that is going to 10.0.0.1 and 
> needs to got to 198.162.0.1.  It's created on the machine that I need 
> to do the routing on.  It's a Linux machine using iptables 1.2.9. 
> Neither SNAT or DNAT seem to work.  DNAT wants to work on the 
> incomming packets but does what I need.  SNAT will work on the 
> outgoing packets but doesn't do what I need.  Mangle seems to only 
> want to send packets to my 127.0.0.1.

Ugh.  You are wanting to redirect traffic that is not following the 
normal packet flow through the kernel.

> Any help would be appreciated.

Have you considered adding the 10.0.0.1 IP address to equipment with a 
corresponding 10.0.0.x IP address to your system?

Or you may be able to look in to some sort of (socks?) proxy rapper that 
will bind a 10.0.0.1 and allow you to redirect the traffic over to 
198.162.0.1.



Grant. . . .