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Imaxinar DM

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Interesting problem with this CenturyLink ADSL Modem/Router I am stuck with for a while. I'm setting up a new business first at home and then when the time is right I'll move to a real office (and good direct Internet access) in town.

Running 3CX Debian for 3CX v15 (most current build)
I have the Firewall and SIP ALG off

I put in all the port forwarding rules, ran the checker and all passed. Everything worked fine (2017-3-3).

Now a few days later it fails, but the modem still has the port rules intact. Now I have gone in and removed all the port forwarding rules and rebuilt them in the Modem/Router. Now again it works fine as of 2017-3-5. I'll report back if it holds or fails again in the future..

3CX Firewall Check.jpg ZyXEL C1000z Port Forwarding for 3CX.jpg
 
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