Help - New T1 Connection

admin_2 · ‎04-03-2004

Hi! I just got a connection for a new T1 - I installed a Cisco 2621 Router with a T1 WAN interface card and two Ethernet ports - the ISP provided me with a script to load - which assigned the outside IP address to one of the ethernet ports - but doesn't help with the inside accessing the internet. It did not set up any NAT. I am waiting for the VPN bundle I purchased with the router...but in the mean time I would like to at least be able to use the Internet. Does anyone have a sample configuration they could share? Or point me in the right direction to get some help with the NAT?

marvin · ‎04-04-2004

int eth 0

ip address 10.0.0.1 255.255.255.0

ip nat inside

int ser 0

ip address 65.22.22.22 255.255.255.252

ip nat outside

ip nat inside source list 1 int serial0 overload

access-list 1 permit 10.0.0.0 0.0.0.255

You don't have to assign the outside address to an ethernet interface. The example above uses an internal network of 10.0.0.0/24 using NAT overload (PAT) on a single outside address.