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Double translations - possible?

iholdings
Level 1
Level 1

I need to be able to have a host on Network-A to be able to connect to a router on Network-C - with Network-B in the middle.

Is it possible to NAT an IP from Network-A to Network-B - then NAT the resultant Network-B IP to an IP on Network-C?

2 Replies 2

Jon Marshall
Hall of Fame
Hall of Fame

Hi

Assuming you mean NAT the source IP address then yes this is perfectly possible. You just set up your NAT translations on each router eg

Router A

ip nat inside source static 192.168.5.10 172.16.5.10

Router B

ip nat inside source static 172.16.5.10 10.1.1.5

where

192.168.5.0 is NET A

172.16.5.0 is NET B

10.1.1.0 is NET C

HTH

Jon

Joseph W. Doherty
Hall of Fame
Hall of Fame

BTW: It's also possible to double NAT on a single router, useful when two networks address space overlaps.

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