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FTD Static NAT with Port Translation clarification

Hi everyone I need a little help with NAT on FTD

I'v been searching since yesterday but I had no luck finding some infos

What is the correct way to populate the configuration form for this scenario? Please see  attached images

Figure 8 Static NAT with Port Translation 

Did I pickup the right surce and destination ports in my example?

I'm sorry but I've been reading the guide below since yesterday but I can figure it out

 

https://www.cisco.com/c/en/us/td/docs/security/firepower/640/configuration/guide/fpmc-config-guide-v64/network_address_translation__nat__for_firepower_threat_defense.html

Regards Claudio

 

fig8.PNGwebserver.PNGtelnet.PNG

 

 

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Accepted Solutions

As long as you selected the inside interface as the Source Interface Objects and the outside as the Destination Interface Objects, I would say you got it right Claudio.

Those static PAT rules will allow you to connect on port 80/tcp and 23/tcp using the outside interface public IP as the destination. For the http rule, the FTD will translate its outside interface IP to the webserver internal IP, and the external port 80/tcp to port 8080/tcp. Similar for the telnet rule, the FTD will translate its outside interface IP to the telnet server internal IP, and the external port 23/tcp to port 23/tcp. Don't forget to allow this traffic on the access control policy.

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2 Replies 2

As long as you selected the inside interface as the Source Interface Objects and the outside as the Destination Interface Objects, I would say you got it right Claudio.

Those static PAT rules will allow you to connect on port 80/tcp and 23/tcp using the outside interface public IP as the destination. For the http rule, the FTD will translate its outside interface IP to the webserver internal IP, and the external port 80/tcp to port 8080/tcp. Similar for the telnet rule, the FTD will translate its outside interface IP to the telnet server internal IP, and the external port 23/tcp to port 23/tcp. Don't forget to allow this traffic on the access control policy.

Thank you Aref

The configuration was correct it was an application problem

 

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