Connect CISCO 3750 to cable comcast business class modem

[maria.melendez]

I'm connecting a Cisco 3750 switch to a cable modem. I need to be able to use around 25 machines at the same time, I was thinking to use dhcp and use PAT. But I discovered that the 3750 doesn't support NAT. If there's any other way that I can make this happen? In the cable modem, we have only 4 UTP connections.

I'll appreciate your help. Thanks!

-Maria

[dominic.caron · Accepted solution]

You need to add a router or a firewall(nat device) if your cable modem is not in fact a router-modem combo. No easy way around it. The 3750 is not an internet edge equipment.

[maria.melendez]

Thanks Dominic, after I placed this question I discovered that the cable modem is a combo.