nat on VPN

Jul 04, 2005 4 Replies

I am trying to set up the roaming users, who access to the company network via Ipsec vpn, to be NATted when accessing to one of the internal networks.



I can set "ip nat outside" on the interface that connects to that internal network. How about "ip nat inside" ? Can I set a virtual interface for the roaming users in order to apply "ip nat inside" ?



I searched on Cisco site and they show a solution for VPDN/PPP but I use IpSec.



Thanks,



DT



Create Interface Tunnel and IPsec ACL applied on GRE tunnel.

interface Tunnel1 description GPRS tunnel source xxx tunnel destination yyy ip nat inside . . access-list IPSEC permit gre host xxx host yyy . ip route Tunnel1

of course , mobile operator must support this metod.

One method I just found and tested sucesfully :-) is to use NAT virtual interfaces. In this case, it is unecessary to have "ip nat inside" or "ip nat outside"; and the "ip nat source list" with the correct access-lists will help select the appropriate conversion.

DT

Marek, thanks for your reply. Although I just found one method ( see my reply to my OP ), I am going to try your method now. I want to learn different ways to do things.

Thanks,

DT

Marek, thanks for your reply. Although I just found one method ( see my reply to my OP ), I am going to try your method now. I want to learn different ways to do things.

Thanks,

DT

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