Ports forwarding and DMZ not working properly

December 19, 2010 at 15:17:44
Specs: Windows 7 Ultimate x64
Hello all,
I recently moved to another city and am now having a problem with my router. After hooking everything up to the new modem, it seems that even though my ports are forwarded in my router's settings, they aren't actually forwarded. I am using the same router and computer I have been using so I figured it had to be the modem, but when I hook the computer straight up to the modem, the ports are open. I have tried 2 different routers and neither of them work. I have also tried a DMZ as well as forwarding and that doesn't work either. I have also tried disabling SPI Firewall Protection and that didn't help. I am reasonably intelligent when it comes to networking so I know how to port forward, but this has me stumped.

For the record, I do have my IP static. I am pretty certain that the router settings are correct being that when I forwarded the ports originally at my old house everything worked fine. Before I tried the second router, I used the reset button on the back of the first and that didn't help. I've also updated the firmware on the second router which also didn't help.

So basically I moved, and with everything being the same except the connection, my ports are closed. Switching routers and forwarding didn't work. DMZ on both routers didn't work. My IP is static, the ports just aren't open. When hooked up straight to the modem, the ports are open. Does anyone have any idea what the problem is?


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#1
December 19, 2010 at 15:36:41
So I assume, you have crosschecked the ip addresses, given in the router settings, to where you configured the port forwarding.

Did you also try to check, whether the ports are opened or closed by unsing an online ports scan?

I also assume, you made the port forwarding in the NAT table. It this correct?

The original poster should always write the last response !!!
Let us know, if the problem is solved !!!


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#2
December 19, 2010 at 15:41:19
Thanks for the quick response.

Yes the ports (and DMZ when I tried that) are set to the correct IP.

To check the ports I had a friend attempt to connect to my Ventrilo server and Minecraft server and he wasn't able to until I hooked up directly to the modem.

I am not familiar with how to forward in the NAT table. I've set up a few routers in the past and usually the steps I took with this one worked, the just aren't this time. I've also tried an online checker, I haven't used something like that before today though so I am not sure of the accuracy.


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#3
December 19, 2010 at 18:51:47
Using online port scanner, you simply have to give one or more ports, you'd like to test and give it a shot.

Here is an online port scan, that is easy use:
http://www.t1shopper.com/tools/port...

The original poster should always write the last response !!!
Let us know, if the problem is solved !!!


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Related Solutions

#4
December 19, 2010 at 23:36:57
I used the program provided by your link and these were the results:

Scanning ports on 75.189.216.14

75.189.216.14 isn't responding on port 3784 (bfd-control).
75.189.216.14 isn't responding on port 22565 ().


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#5
December 20, 2010 at 12:10:37
Alright so I think I figured out the problem. Apparently after I hooked everything up, my father redid the wiring so that the cord from the modem went into the Vonage box, then from there to the router. Something in the Vonage box was blocking the port because after hooked that box up to the router I am now having one of my desired ports clear. However the other one is still blocked for some reason. Any idea why one would open but the other wouldn't?

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#6
December 20, 2010 at 16:20:56
Is the service running, listening to the "blocked port"?
Use netstat -an on the machine, that supports the service, to figure out, whether the machine is listening to that port.

The original poster should always write the last response !!!
Let us know, if the problem is solved !!!


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