Solved Port only forwards when on the same network

January 8, 2012 at 18:06:29
Specs: Windows 7
I have a Cisco Valet M10 that I am having troubles with port forwarding. Comcast ISP
Under ‘Single Port Forwarding’, I have followed directions and forwarded the two ports to the local machine. I looked in the router setup to find my current public ip address from Comcast – let’s say its 98.221.99.99. If I am on the same network as the machine that is receiving the port forwards, and I type http:// 98.221.99.99 in a browser, the forwarding works fine.
If I am external/not on the same network, typing http:// 98.221.99.99 in a browser times out. I have tried http:// 98.221.99.99:9000 too (9000 is the port I need forwarded) and that doesn’t work either. But, I do have remote management enabled for the router and if I am external/not on the same network and I enter http:// 98.221.99.99:8080 in a browser, I get the router login screen and can enter my user name and password and login to the router just fine.

See More: Port only forwards when on the same network

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✔ Best Answer
January 10, 2012 at 12:52:05
So I guess, you forgot to configure the default gateway ip address (the ip address of the router) in the camera system settings.
If so, the camera system has no idea, where to go, if an ip address is not found in the local network.

That does not explain, why the port is shown as closed by online scanning the port 9000.



#1
January 8, 2012 at 21:47:49
If you know the port forwarding setup is correct in the router, you might want to try checking firewall settings. You may have to create a rule in the firewall on the computer to allow incoming traffic on that port.

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#2
January 8, 2012 at 22:45:20
To what ip address and computer are you forwarding port 9000?

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#3
January 9, 2012 at 05:24:27
The traffic is being forwarded to a security system at static IP address 192.168.0.144.
Again, when I am on the same network as the security system and I enter the external IP address (the one from Comcast) I get forwarded to the security system just fine.
Could this be Comcast related?

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Related Solutions

#4
January 9, 2012 at 06:14:15
It is not normal to be able to hit the wan ip and bounce back into the lan. Normally you would access locally by going 192.168.0.144:9000

It is not normal to " I type http:// 98.221.99.99 " and you get to the camera system. Normally you have to type http:// 98.221.99.99:9000

You have to include the port being used in the command. Not specifing the port means no redirection.

So there is something weird with your setup.

This is what I put in for my system
http://192.168.1.3:7000

Answers are only as good as the information you provide.
How to properly post a question:
Sorry no tech support via PM's


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#5
January 9, 2012 at 07:22:00
@wanderer - you are correct that there is more to the story. I checked the router port configuration again and port 80 was forwarded also to 192.168.0.144 - so that is why http:// 98.221.99.99 gets forwarded (when on the network).
The problem remains that http:// 98.221.99.99:9000 will not get forwarded correctly when I am external to my network.

Thanks for all the help so far.


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#6
January 9, 2012 at 07:27:05
Have you already checked, whether the port is open by using an online port scanner?
http://www.t1shopper.com/tools/port...

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#7
January 9, 2012 at 07:31:56
I have checked (and just rechecked using the link you provided) and it says the port is closed...

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#8
January 9, 2012 at 07:55:37
While you can access the computer on port 9000 internally, there must be something wrong in your router settings.

I bet, Comcast will not block port 9000 because it's one of the high ports from 1024 to 65535, that are always used dynamically, when you are surfing in the internet a.s.o.


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#9
January 10, 2012 at 12:39:00
ok - I resolved the issue. I had the camera system set as a static IP of 192.168.0.144. Instead I changed the camera IP to be assigned by the router and then in the router, I reserved the ...144 ip address (by the MAC address of the camera system) so that the router would always assign the 144 address to the camera system. The port forwarding was correct so I left it alone. I can kind of see why it is needed to be set this way but just wasn't my first thought.

Thanks for all the very timely replies...


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#10
January 10, 2012 at 12:52:05
✔ Best Answer
So I guess, you forgot to configure the default gateway ip address (the ip address of the router) in the camera system settings.
If so, the camera system has no idea, where to go, if an ip address is not found in the local network.

That does not explain, why the port is shown as closed by online scanning the port 9000.


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#11
January 10, 2012 at 14:40:20
@paulsep - you may be right about forgetting to configure the default gateway on the camera system. My guess as to why the ports showed closed (they show open now) is because the router couldn't find a computer/device to forward that port traffic to so it didn't open the port...

thanks again


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