Public Servers in Cisco ASDM

Recently I tried to rebuild some port forwarding rules on a Cisco ASA using Cisco ASDM. I wanted to use the Public Server feature. Strangely it didn't allow me to create port forwarding rules on the public interface IP. It got the following error message:

The public address cannot be the same as the public interface address.

I don't understand this, because using plain NAT rules works just well on the interface IP.

I built the NAT rules in the following way and it works fine for me:

Screenshot of a NAT rule in Cisco ASDM

Published on 2022-02-09, 20:05 +0000