Is something blocking my ports? Port forwarding problem!

queryz

Honorable
Dec 30, 2013
1
0
10,510
Basically I logged in to my router and forwarded ports 27015-27030 and some other ports as well(done this many times before and always worked), but when I check if my port is opened using www.ismyportopen.com then it says it's closed. But weird thing is that when I forward ports 80, 443 or 24 then those appere to be opened. I've never had this problem before.

Some of the things I've tried:
1. So I called to my ISP and asked what's the problem, they told that they are not blocking any of my ports.
2. Next I restored my router to factory settings, tried again but failed.
3. Also I turned my routers firewall off and computers antivirus, firewall off too.
4. I checked that my internal ip address matches to port forwarding.
5. I tried to forward ports through telnet but still didn't get ports opened.
6. I tested other ports as well but only ports 80, 443 and 24 can be forwarded.
7. I've searched if anyone else had similar problem but I didn't find anything.
8. I've tested port forwarding on other computer, but still no luck.

My router model is Thomson TG784. So is there something blocking my ports or some bug?