Two Wireless Networks on One Cable Modem

December 29, 2009 at 09:41:43
Specs: Macintosh & PC
I am trying to set up two wireless networks on one
cable modem to bypass a sonic wall that must be
used on one computer. Will this setup work? I was
planning on putting a splitter after the modem. One port would go straight to an open wireless, and the other would go to the Sonic Wall, which would connect to the other wireless. I know I have to disable DHCP on the open network, and change its default
IPs. Would this work?
Thank you for any help,
Brandon Katcher

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December 29, 2009 at 10:47:45
"splitter after the modem"

nope won't work since normally you only get one ip address from the modem which is used by the sonicwall wan port.

You can buy an additional ip from the isp. You would connect a router since you need a dhcp server on that subnet for the open wireless.

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December 29, 2009 at 14:26:07
Thank you for the reply. So there's no other way to do this? A
second IP from our isp will more then double the monthly cost.

Brandon Katcher

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December 30, 2009 at 08:25:04
depending on sonicwall model you should be able to setup a vlan per open/closed network and configure a rule that allows the open network full access.

This way you have one ipsubnet but the open can't touch the closed network due to the vlan

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