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

Help setting up 678 router to enable NAT to multiple public IP addresses

Our office was just set up with DSL service through a 678 router from Qwest. Along with our router and DSL service, we received 5 static IP addresses. I have set up the 678 as a DHCP server to automatically assign IP addresses to each of the computers on the network. However, the next step is what I am having problems with. I need help in determining how I can configure the NAT on the 678 to map the internal (private) IP addresses to the 5 (public) IP addresses that we received from Qwest. Any and all help would be greatly appreciated.

2 REPLIES
New Member

Re: Help setting up 678 router to enable NAT to multiple public

You have to use dynamic nat.

First you create an IP address pool with the 5 IPs that you have:

ip nat pool

{ netmask | prefix-length }

[ type { rotary } ]

and then you create the translation INSIDE -> OUTSIDE

ip nat inside source list pool

If you still have problems, look at

http://www.cisco.com/warp/public/556/nat-cisco.shtml

Regards,

JPL.

New Member

Re: Help setting up 678 router to enable NAT to multiple public

Thanks for your response. I looked at the documentation for the Cisco 678 but I can't find anything regarding dynamic nat. If I use the syntax that you described, will it work?

Thanks again,

Dean

141
Views
0
Helpful
2
Replies
CreatePlease to create content