NAT Two external IP's to one internal SMTP server on ASA 8.4

[upen desai]

Hi Guys

I hope you can help, i have a situation with one of my exisiting clients. They have two external IP addresses and one internal SMTP server.

Can you please advice whats best to configure a dynamic NAT solution for such a scenario.

many thanks

Upen Desai

[Jon Marshall]

Upen

Do you want a dynamic NAT or a static NAT ?

If it is dynamic then outside hosts will not be able to initiate connections to your mail server. Is this what you want ?

Jon

[upen desai]

Hello Jon

Yes i was thinking of using dynamic NAT, but if there is a solution via static then would like to learn about that as well.

many thanks

[Jon Marshall]

Upen

This is the static configuration where the public IPs are 195.10.10.1 and 195.10.10.2 and the SMTP private address is 192.168.5.1 -

object network PublicIPs
host 195.10.10.1
host 195.10.10.2

object network SMTP_local
host 192.168.5.1

nat (inside,outside) static PublicIPs

Not sure how or whether it can be done dyanamically but i woudl have thought you wanted a static anyway ?

Jon