Double NAT in a Router

[LIONEL GRIFFITH]

Is it feasible to perform double NATTing in a router?

For example:

***************<-------Router------------------>

Host (IP)------NAT IP-A

172.16.2.16 -->192.168.1.240

***************NAT IP-B--------Local Global IP

***************192.168.1.240 ->192.168.21.20

***************192.168.1.240 ->10.1.248.250

If this can be implemented in a cisco router, can you provide an example or a link where I can find more information. Thanks

[s_fisher]

Are you trying to translate an address two different times on the same router?

[LIONEL GRIFFITH]

Yes, I need to perform NAT twice in the router before forwarding the packet across the WAN.

[rjackson]

Not sure what your doing this for. This link deals with using two nat pools, which looks like what you what on the outside. The policy routing may let you use different outside addresses for the same inside address depending on the destination.

http://www.cisco.com/en/US/tech/tk648/tk361/technologies_tech_note09186a0080093fca.shtml