Configure NAT and a routable IP on same interface?
We've just installed a 2600 router (IOS 12.0) and been assigned a single IP for the serial interface and an IP block /29 for the ethernet interface. As configured, this works fine and gives us 6 routable addresses. Of course, for firewalling and expanded address space, we need to configure NAT.
The question is: using only the 2600 router (with one serial and 1 ethernet interface) can we configure NAT and also retain the 6 routable addresses? Or, do we have to abandon the assigned IP block, just use the address assigned to our serial interface, and only configure NAT on the ethernet interface?
Re: Configure NAT and a routable IP on same interface?
Hey Dave, I answered this question you posted in the WAN forum as well.....the answer is yes this is quite possible.
In your /29 you designate one IP for your router (usually the lowest IP in the block) and use the remaining addresses for your NAT pool. Use static NAT assignments if you need the outside world to have access to your web servers, mx servers etc.
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.