IPSec + Nat

From: Simon Baxter (Simon.Baxter@xxxxxxxxxxxxxx)
Date: Sun Feb 11 2001 - 01:57:27 GMT-3


   
I've read the "order of processing" information from CCO - before anyone
sends me it again....

Is this possible?

Company A has a network 10.0.0.0 with a connection to the internet.

Company B has a network that comprises of totally registered internet
addresses.

Company A and B decide to connect to eachother via an IPSec tunnel.

Company B selects a backbone router that will terminate the IPSec tunnel.

Company A wishes to both
        1) Nat their private address range onto a public range
        2) Terminate an IPSec tunnel to company B

        NOTE: On the SAME router...

I've done multiple NAT + IPSec tunnels where both sides are natting and
IPSecing. Basically you define interesting traffic for encryption and
interesting traffic for NATing
something like this :
!
crypto map blobby
match ip add 101
!
ip nat in so route-map natter pool wolly
!
route-map natter perm 10
match ip add 102
!
acl 101 per ip 10.1.1.0 0.0.0.255 20.1.1.0 0.0.0.255
!
acl 102 per ip 11.0.0.0 0.255.255.255 21.0.0.0 0.255.255.255

But this example is natting some stuff and VPN tunnelling other stuff.

I want to know how to tunnel translated traffic when one box is doing the
tunneling and translating....

???

Simon



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