FTD second IP Address

[elopraha1]

I am configuring Cisco FTD 1100. Need to use three IP addresses on outside interface. Is there nay way how to do that?

Thank You

Jaromir

[Marius Gunnerud]

What will you be using the IPs for?  NAT is one option

[elopraha1]

I will use it for SMTP server.

[Marius Gunnerud · Accepted solution]

Then you would only need to NAT the second public IP to the SMTP server.  If the second public IP is not in the same subnet as your FTD outside interface then you need to make sure that your ISP is routing that IP / subnet towards your FTD, then NAT will take care of the rest.  The interface needs to be configured to perform proxy ARP, but this is enabled by default. So, unless you have made changes to this you should be all good to just configure NAT.

In addition you will need to configure access control policy rules to allow traffic to the SMTP server on port tcp/25.

[elopraha1]

Thank You 
it Works. Nat has to be Auto NAT .

Jaromir

[sherali mamatkarimov]

can you share with config as image?