How do I get my ZoneCD to work with Comcast Cable modem static IP

Posted on 2007-11-29
Medium Priority
Last Modified: 2013-12-14
I'm trying to setup a hot spot for our customers that visit us. I found ZoneCD from a previous post so I wanted to give it a try. I was able to make it work at home without any major trouble. At home I'm using a Linksys cable modem and a Linksys WRT54G wireless router (DHCP off). The ZoneCD machine has the 2 NICS in it.

So once I go the hang of the setup process I brought it all to work and went through the setup there but was unable to get it to work.

My setup at work is a little different from my home setup. At work I have a static IP and I'm using the cable modem from Comcast. (SMC8013WG). It has 4 LAN ports so I thought it would be plug and play with the ZoneCD. And I'm using the Linksys WRT54G wireless router for my access point.

During the boot of the ZoneCD you have the option of using DHCP or static for eth0. I tried both and neither worked. I even tried switching the cables.

I hooked up my laptop to one of the open ports (wired) on the modem and after making several changes to my laptop network settings, I was able to get internet to my laptop. So I tried to use those same settings on the ZoneCD setup but no luck.

So will this modem (SMC8013WG) work with ZoneCD and what settings should I be looking for?
Should the IP of eth0 on the ZoneCD be an internal or external?

Static IP - 70.89.2.XXX (router/modem IP?)
Gateway - same as above
Subnet -  ??

I'm not very well versed in network setups so I apologize for not providing enough info in my question...

Thanks for any help or advice.
Question by:ksaker
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LVL 10

Accepted Solution

dragonjim earned 750 total points
ID: 20381894
Hi ksaker,

I just configured a ZoneCD.

Your settings: (which are then saved to FLOPPY or USB-drive)

After your options for:

1) Closed / Open
2) Premium / Free
3) GUI / Command Line

**** 4) STATIC or DHCP-->
                IP: This is the ZoneCD computer on your LAN (eth0)
                SUBNET: Subnet (eth0)
           GATEWAY: The gateway address, likely your router
           Name Servers: likely provided by your ISP

I think your problem is the STATIC IP... select an IP for your ETH0 (LAN side) address

From the command prompt, enter "ifconfig eth0" what IP is returned?

ZoneCD preferrs 2 NICs.
   ETH0 = to wired network (router)
   ETH1 = to wireless network infrastructure
LVL 10

Assisted Solution

dragonjim earned 750 total points
ID: 20381956
--> The modem itself shouldn't be an issue. What ZoneCD needs is an active internet connection. I suspect you have an issue in the setup.

Make sure your STATIC IP is not the same as the modem or router, it sounds like Comcast has assigned a STATIC to your modem (this is not important in the setup of ZoneCD).

If you have

MODEM -------------------> Router -----------------------> ZoneCD Computer
     70.89.2.XXX                          (Gateway

The ZoneCD will also NAT the ETH1 to a default 10.10.10.xxx network.

If above fails and you have support, the support department will work with you to resolve problems.

Author Comment

ID: 20381975
Yes, you are correct! Yesterday, I finally realized that it needed to be an internal IP for eth0. Once I did that, the thing worked like a charm...

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Author Closing Comment

ID: 31411645
Well done.

Expert Comment

ID: 24852232
Can anyone tell me if you HAVE to have a ZoneCD account for this setup to work?

And I have found mention that there is a free service account, but I can not find anything about this on PublicIP's website.

Any help will be greatly appreciated!

Kevin in California
LVL 10

Expert Comment

ID: 24852420
Kevin - I think you need an account (PublicIP can actually track usage patterns, daily transfer, etc)... This would be the log-in credentials on publicip.com.

At $175 per year for a full account - I'd lean that way... the free server is occassionally down, we are happy with the uptime and reporting that comes with that option...

Paid service runs redundancy on Publicip's end.

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