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Re: [FW-1] VPN with NAT



Angel Barcenilla García wrote:
>
> Hi friends,
>
> I would like to know if it's possible to install a VPN client from CISCO on
> a PC in our internal LAN (behind the Firewall-1)???  We are using static
> NAT.

"Static NAT?" So in FW-1-speak, that means you are doing 1-to-1 NAT, right?

> We have created a rule to allow IKE and ESP (ports 500 and 50) but I can't
> connect to the remote host. If I connect my PC in the external LAN, that is,
> in the untrusted LAN I can connect successfully.

FW-1 may be having problems maintaining a state in NAT (and in the policy rules)
on ESP. But I wouldn't expect a NAT problem with 1-to-1 NAT. Although it causes
me tremendous pain to suggest this, you might try the UDP encapsulation option on
the VPN. (When you say "Cisco VPN" I assume we are talking about using an Altiga,
now called Cisco VPN Concentrators, at the other end with IPsec? But that is a
big assumption. "Cisco VPN" could be a lot of different things.)
--
Crist J. Clark                               [email protected]
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