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New Member

Multiple NAT Interfaces

Is there a way to have multiple Static and Dynamic NAT pools?

I have a router Cisco 1721. I have inside and outside NAT already setup on the f0 and e0. I now need to also use NAT on the e1. I need Static and dynamic on both.

New Member

Re: Multiple NAT Interfaces

Yes you can have multiple interfaces participating in NAT. You need to define "ip nat inside" and "ip nat outside" commands in the appropriate interfaces.

Here is a link u can find static and dynamic NAT used simultaneously.

New Member

Re: Multiple NAT Interfaces

I have static and dynamic on the two existing interfaces. The interfaces are as such.

f0 = 192.168.10.x/24

e0 = 172.20.1.x/24

server at

Future interface (this is the one I'm trying to figure out, unfortunatly I can't change IPs)

e1 = 172.20.1.x/24

server at

The PCs on the 172.20.1.x network need to access the 192.168.10.x network for internet access and users on the 192.168.10.x network need to access both servers.

the link

discusses two networks. What about three networks?

New Member

Re: Multiple NAT Interfaces

The router will not let you configure the same network number on two interfaces, even though the ip may be different.


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