Author Topic: Port Forwarding Problem  (Read 5726 times)

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Offline herman

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Port Forwarding Problem
« on: February 15, 2014, 02:47:09 PM »
Hello,

Maybe my problem is easy to solve, but I don't understand any of this port forwarding stuff and am getting a little frustrated after trying to fix it for a few hours now... So hope someone can help me out here.  :smiley:

I use two programs to download music and films and both state my ports are closed. Programs are Soulseek and uTorrent. So now I'm looking for ports that are open...

I installed Simple Port Forwarding and Simple Port Tester, but each time I try to test if a port is open connection is failed. Is there a way to easily find a port that is open? I would like to be able to download music and films again...

My router is a Cisco, but I don't know the password.

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Port Forwarding Problem
« on: February 15, 2014, 02:47:09 PM »

Offline trpted

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Re: Port Forwarding Problem
« Reply #1 on: February 16, 2014, 11:19:22 AM »
#1 Since you do not know the log-in info: What is the model of that Cisco/Linksys router?

#2 Forward the ports to your computer.

#3 Post 2 screen shots for us.

a) A screen shot of the port forwarding page in the router
b) A screen shot of the results of this port tester
http://www.pcwintech.com/simple-port-tester

(Or if on a Mac computer, A screen shot of the results of the simple-port-tester for mac.)

Lets go from there :-)
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Offline Shane

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Re: Port Forwarding Problem
« Reply #2 on: February 17, 2014, 09:33:45 AM »
You have to be able to log into your router in order to setup port forwarding :wink:

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Offline trpted

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Re: Port Forwarding Problem
« Reply #3 on: February 18, 2014, 09:56:27 AM »
Beware that is not always true.

#1 For example

a) If UPnP is enabled in the router

b) If an user has UPnP turned on, on their computer

c) If an user has UPnP allowed by their software firewall on their computer

d) If an user has an UPnP aware app on their computer

e) and if an user has that UPnP aware app allowed in their software firewall, then the user could open ports in the router without knowing the log-in for the router.

-> If the server that you want to forward for is not UPnP aware, then I point you to

http://www.howtogeek.com/122227/how-to-quickly-forward-ports-on-your-router-from-a-desktop-application/

With info about: UPnP Port Mapper.

#2 Also UPnP only works with-in one subnet for the method above. By this for example...

a) Works:

Internet -> (Public IP 999.888.777.666) Router (LAN IP 192.168.1.1) -> Computers by wire or wireless (192.168.1.x)

b) Does not work:

Internet -> (Public IP 999.888.777.666) Router (LAN IP 192.168.1.1) -> (WAN IP 192.168.1.2) Router (LAN IP 192.168.2.1) -> Computers by wire or wireless (192.168.2.x)

#3 Some notes about that.

a) Just to clear, UPnP will not jump to the upstream router.

b\) This does not mean that if the upstream router is forwarding the ports to your router's WAN IP (in the example above 192.168.1.2), that you can not get users from the Internet to connect to you.
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Offline Shane

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Re: Port Forwarding Problem
« Reply #4 on: February 18, 2014, 12:38:50 PM »
OK I will put it this way, you need to be able to log into the router to make any changes, including turning on UPnP :wink:

Shane
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Offline trpted

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Re: Port Forwarding Problem
« Reply #5 on: February 18, 2014, 04:52:46 PM »
While I understand what you are saying, with most routers UPnP is enabled by default ;)

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Re: Port Forwarding Problem
« Reply #5 on: February 18, 2014, 04:52:46 PM »