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2621 with cabel modem?

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Hello,
I am very new to Cisco router configuration, but do to recent cutback's at work ouer router is becoming more my responsibility. I have a 2621 at home the I am playing with and would like to configure it to work with my cable modem. Can I configure one FE Interface for the cable modem and the other for my local LAN, and be able to access the internet. If so how do I configure this router and each interface for this scenerio. While I am new to routers and IOS, I have done basic configuurations before but cannot get this scenerio to work. I hope this is not to stupid of a question and would greatly appreciate any help. Thanks

"I hear and I forget. I see and I remember. I do and I understand."
- Confucius (551 BC - 479)
 
no you'll need a WIC DSL interface to terminate the signal of the modem.
 
He doesnt need a WIC if he has a cable modem. Just has to set the interface facing the modem to:

ip address dhcp
and denine your nat on that interface:
ip nat outside
On your inside int give it a internal IP Address
and define as
ip nat inside.

Get the default route from you ISP and add it in.
Throw your nat statement in:

ip nat inside source list 100 interface fastethernet1 overload
access-list 100 permit ip xxx.xxx.xxx.xxx 0.0.0.255 any
 
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