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Godzilla

New Contributor II

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Port Forwarding using Arris S33 to Linksys EA6400

Hello forum members

I've just switched from ATT to Cox recently and have some issues with port forwarding.

With ATT: Arris BGW210-700 to Linksys EA6400, Port forwarding has been working on this setup. (ports 7, 9 and 1723)
With Cox: Arris S33 to Linksys EA6400, Port forwarding is NOT working on this setup. (ports 7, 9 and 1723)

On both setups, the IP address on Linksys EA6400 is changed from 192.168.1.1 to 192.168.2.1, so there is no change when I switched from ATT to Cox.

The Internet is working with Cox, but the port forwarding is NOT working.

Does Cox block the port forwarding?

It will be greatly appreciated if you can share your experience.

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WiderMouthOpen

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Esteemed Contributor III

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Cox does not block port forwarding. I don't think there is a way with a stand alone modem. Is the port open/working when you connect direct to the S33? If so, do you have another router to try?

Also, why did you change the Linksys IP address? The modem is 192.168.100.1 so there should be no conflict with 192.168.1.1. Do you have more then one router or have a gateway connected anywhere in your network?

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Esteemed Contributor III

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BTW, do you have PPTP passthrough enabled on the router? See page 29 of manual for instructions how.

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Godzilla

New Contributor II

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Thank you for your quick message.

As soon as I switch to Arris S33 on Cox network, port forwarding stopped.

IP address on Linksys EA6400 was changed because Arris BGW210-700 had 192.168.1.254.

Yes, PPTP passthrough is enabled on Linksys EA6400, and has been working with Arris BGW210-700 on ATT network.

No change on Linksys EA6400.

Arris BGW210-700 on ATT network was changed to Arris S33 on Cox network, which is the only change.

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Esteemed Contributor III

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Not saying it's your router but do you have a different router you can try? Just trying to isolate the problem. Also, did you try bypassing the router? Could be a port Cox blocks locally. Isn't on their blocked port list but I have heard of some people having problems with their local headend.

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WiderMouthOpen

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Esteemed Contributor III

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Shining the Batman light for bruce and darkatt. Any ideas?

Also, it might not hurt to post this on DSLReports to get more views. Post what area you are in and see if you find someone from there. Also, see if you can get a response from Luke_. He is the last Cox employee on the forum so perhaps he might be able to help.

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Godzilla

New Contributor II

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Thanks again.

I will try to reset Linksys EA6400 to factory default and set up port forwarding (7, 9 and 1723) again when I get home. And this is the only router that I have now.

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Darkatt

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You do not port forward on a modem, only the router. The modem is a pass through device, it provides a routable IP address to your router. Make sure you edit your port forwarding on the router to router through the router alone, and completely ignore the modem. 

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