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el berto
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Posts: 197
Joined: Wed Sep 26, 2007 10:53 am

Hijacking packets to different server, possible?

Thu Feb 07, 2013 12:43 pm

Hi, I'm yhinking about this trouble but I have no idea how to solve it.....

I'm using a TCP server (192.168.1.10) on port 5700 receiving packets from external networks (192.168.2.0/24, 192.168.3.0/24).
I've made a new TCP server (192.168.1.11) listening on port 5900.
I can't do NAT on main router.
So I was thinking about placing a RB750 (IP address 192.168.1.10) making an internal NAT: 192.168.10.1:5700 re-directed to 192.168.1.11:5900.
Is it possible?
I also could make the second server on a different network and place RB750 as simple router, but this would be last solution.

I would like change src-address and dst-address at the same time or make multiple NAT on several IP addresses in the RB750.

ether4: IP addresses 192.168.1.10/24 and 192.168.20.1/24
1th NAT: dst-nat 192.168.1.10:5700 -> 192.168.20.1:5800
2th NAT: dst-nat 192.168.20.1:5800 -> 192.168.1.11:5900

but running Wireshark on server I can't see incoming packets....
What's wrong?
Thanks.

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