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NAT on Cisco router to reach a device on a different network

Posted on 2004-08-29
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Last Modified: 2010-04-11
Hi Guys

We connect to a customer site via ISDN and Cisco 800 routers,  unfortunately we both have the same IP network of 10.0.0.0/24, so we use NAT to enable a telnet connection to their servers.

On the remote router, I have the following configuration to reach two of their servers from our network:

ip nat inside source static 10.0.0.250 192.168.2.19
ip nat inside source static 10.0.0.251 192.168.2.20

Then from our network, we just telnet 192.168.2.19 or .20 to get to their servers.

I want to add..

ip nat inside source static 10.0.100.250 192.168.2.21
ip route 10.0.100.0 255.255.255.0 10.0.0.205

Will this work? Can I use NAT in this way to reach a device on a different network, providing I include a route how to get their?

I assume the 10.0.0.205 router will need a router adding back to the 192.168.2.0 network?

Does this make sense?



Gareth
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Question by:localgareth
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lrmoore earned 500 total points
ID: 11925759
Yes, it makes absolute sense. As long as router A has a route to a host (on the same -nat inside- interface) you can create a static NAT entry for it. And, of course, the host must have a route path to get to the natt'd (192.168.2.x) subnet...

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by:localgareth
ID: 11925775
Thanks - Just needed to hear it from someone else :-)


Gareth
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