CenturyLink → Having Issues Opening Ports on Actiontec C1000A

Now I have tried time after time to Open Ports on my router, and at this point I'm about to give up.
I have tested on computer with 0 Anti virus & 0 Firewall, and I still cant seem to get any port to Open. When I was a Comcast customer living with my dad, I never had issues opening ports, now that I'm no longer living with him, I cant seem to get things right.
Now I understand that the Actiontec has issues with Firefox & Chrome, So I have been using IE to make the changes, and atleast with IE changes on the router would save, but the changes I have tried to make have no effect sadly. Some examples of ports I would like to Open are like 6112 for Starcraft, 3074 for Xbox Live.

Here is a img from command promt showing my internal IP used in the rest of the images
»i.imgur.com/P0NnIG4.png

Here is the config page on the router showing that I have entered port 12345 as a example
»i.imgur.com/utSKzjt.png

On 1 website I found that i should try and set up my PC for DMZ hosting, still no luck
»i.imgur.com/KBjqTfr.png

Now I have tried open many other ports, i just did 12345 as a example, but all of them have the same results. To test if the port is open I have tried 3 different websites, here are there results.
And No, I'm not stupid and gonna post my External IP for the world to see
»i.imgur.com/8hfjDhb.png
»i.imgur.com/ku55gux.png
»i.imgur.com/yHPAjO5.png

At this point, I'm convinced my ISP (CenturyLink), has blocked all the ports from being open.

Is anything actually listening on TCP 12345?

CL themselves is not blocking these ports. Short of a stateful firewall on their end, it would be impossible for them to block every TCP port and still sell you a working Internet connection.

Well Iv tried a crap load of ports, its just i cant ever seem to get any of them Open.
Is there any particular port i should try?

Again, is anything actually listening on any of these ports you're opening and testing with one of the pictured tools?

For the port to be open, there has to be a program using that port.

Start by running 'netstat -an' at a command prompt. You should see something like this:

C:\util\dig>netstat -an
 
Active Connections
 
  Proto  Local Address          Foreign Address        State
  TCP    0.0.0.0:135            0.0.0.0:0              LISTENING
  TCP    0.0.0.0:445            0.0.0.0:0              LISTENING
  TCP    0.0.0.0:554            0.0.0.0:0              LISTENING
  TCP    0.0.0.0:2869           0.0.0.0:0              LISTENING
  TCP    0.0.0.0:3689           0.0.0.0:0              LISTENING
  TCP    0.0.0.0:5357           0.0.0.0:0              LISTENING
  TCP    0.0.0.0:10008          0.0.0.0:0              LISTENING
  TCP    0.0.0.0:10018          0.0.0.0:0              LISTENING
  TCP    0.0.0.0:10243          0.0.0.0:0              LISTENING
  TCP    0.0.0.0:18768          0.0.0.0:0              LISTENING
 

Look for your target port as, "Listening". If your target port is not listed as "Listening", port forwarding on the router will not "open" the port. Your server application must be running to open the target port.

EDIT:
I haven't run a server in a few years, so it took a bit of time to get Opera 12.16 set up to run a torrent. Forwarding port 18768 was the easy part; recalling how to tell Opera to run the torrent took some work. Now that I have it running, here is the GRC "Shields Up!" report:

----------------------------------------------------------------------
 
GRC Port Authority Report created on UTC: 2014-05-12 at 16:02:25
 
Results from probe of port: 18768
 
    1 Ports Open
    0 Ports Closed
    0 Ports Stealth
---------------------
    1 Ports Tested
 
THE PORT tested was found to be: OPEN.
 
TruStealth: FAILED - NOT all tested ports were STEALTH,
                   - NO unsolicited packets were received,
                   - A PING REPLY (ICMP Echo) WAS RECEIVED.
 
----------------------------------------------------------------------
 

To be blunt, your router can't open ports (probably better to say, "Shouldn't"; you don't want passersby playing with your router config). Rather, it forwards unsolcited traffic to a defined host's local IP address. Unless there is a server running on that host, and it is listening on the designated port, that port will appear as, "Closed" to anybody trying to connect; or, as in my first attempts to provide an example, "Stealth", due to a local misconfiguration.

CL's pretty good about blocked ports. At least in Qwest areas, the only port blocked on their end is 25, so you can't run an incoming mail server. (You can get around this by paying the $5/mo for a static IP, they'll let you open 25 and a reboot of the device and you'll be able to set up mail delivery. This is how I have my line set up.)

As the others have said, something on your PC (Such as an IIS server for web pages) needs to be listening for a connection.

At the risk of sounding silly, is there a reason Starcraft and Xbox need port forwards?

Maybe it would be better to start with what you're trying to accomplish. We've found out before a few times that port forwards were trying to be used and there was actually another error with a service. (there was a thread about FaceTime recently, for example.)