Can a 2501 be configured to share cable connection?

in CCNA & CCENT
Can you apply NAT inside to the serial interface of the 2501? Thinking this would be cool to do because I have more than one router right now. Dont want to waste money on a 2514 if I dont need one.
Comments
[cablemodem]
[e0 (2501) s0]
[s0 (2501) e0]
[LAN]
Just remember to add your LAN's network address range to the NAT inside source/access list.
Also, do a "passive-interface ethernet0" on the first 2501 when configuring routing protocols. You don't want your neigbors down the street knowing what your home internetwork looks like.