Re: NAT To Multiple Outside Interfaces

From: kym blair (kymblair@hotmail.com)
Date: Sun Nov 17 2002 - 06:21:58 GMT-3


Nate,

Instead of natting to the E0 interface, nat to a pool:

ip nat pool NATPOOL 192.168.3.1 192.168.3.255 prefix-length 24
ip nat inside source list 1 pool NATPOOL

You'll have to advertise the 192.168.3.0 network on the outside of course.

HTH, Kym

>From: Nate Kleven <cciemail@intellinet.ws>
>Reply-To: Nate Kleven <cciemail@intellinet.ws>
>To: ccielab@groupstudy.com
>Subject: NAT To Multiple Outside Interfaces
>Date: Sat, 16 Nov 2002 23:46:31 -0800
>
>There is probably a very easy solution to this, but it escapes me: Router
>1 has three interfaces, 1 ethernet and 2 serials. The ethernet is the NAT
>INSIDE interface. Clients on the inside need to be NAT'd for request going
>out both of the serial interfaces. How do I do this? Normally it would
>look
>something like this.
>
>
>
>Interface Ethernet 0
> ip nat inside
> ip address 10.0.0.1 255.255.255.0
>!
>!
>!
>Interface Serial 0
> ip nat outside
> ip address 192.68.1.1 255.255.255.0
>!
>Interface Serial 1
> ip nat outside
> ip address 192.68.2.1 255.255.255.0
>!
>ip nat inside source list 1 interface s0 overload
>!
>!
>access-list 1 permit 10.0.0.0 0.0.0.255
>
>
>In a configuration like this, my traffic would all go out Serial O because
>it is the one in the overload statement, right? What if I want to NAT a
>packet that is only reachable via serial 1? I'm sure I'm overlooking the
>obvious.
>
>Thanks in advance.
>
>Nate



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