Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements
Webcast-Catalyst9k
New Member

PAT confusion

Morning everyone, i have a problem...

I am trying to setup RDP connections from 3 outside addresses through a firewall to 3 call manager inside addresses. Normally we would do static NATing on the router, to NAT outside straight to inside.

In this case, i have been asked to NAT all of our outside addresses to my e0 ip address which connects to the firewall to get to the 3 Call Managers on the inside.

I'm assuming i would have to use PAT to disgunish between which Call Manager i am trying to get to? But have never used PAT before!!!!

Any help would be fantastic. I have included a little .ppt diagram to try and make things clearer

Kind Regards

Paul

1 REPLY

Re: PAT confusion

Your router transparently NAT's all ports to the outside adress of the firewall. On the firewall you should set up three static translations. As you can only use the outside adress of the firewall this implies that you must use three different tcp ports to connect to the three call managers.

The statics on the firewall would look like:

tcp 3391 3389

tcp 3392 3389

tcp 3393 3389

From the outside you will "see" the IP of the router which xlates one-one to the firewall.

For example: To connect to call manager 2 you must use port 3392.

Regards,

Leo

131
Views
0
Helpful
1
Replies
CreatePlease to create content