I'm inattentive and sleepy fool... Pressed the "Clarify question"... Duplicate my response:
I will try to paint, even though I have already local time 02:17 night and the brain is not thinking...
Itself long suffered with the port forwarding on D-Link DIR-300 NRU B5, and decided it's pretty unusual.
So, to start here is my screenshot of the port forwarding:
As you can see portforwarding is on the external VPN interface (of course, the idea is to push local?), external and internal port are the same (in General, as you have), and now the main snag:
Try using this service: ping.eu/port-chk/
checking if your port. But if there's a Apache or other web server, then using a service monitoring sites check whether the website from the outside.
And Yes, I forgot about the main thing. If you from any PC connected via a router try to access your external IP, it won't work (on establishing the reasons he beat), also my ISP if any of the subscribers (a very large ISP) try to access my external IP,... nothing, just "timed out" and all the tech support provider, nothing intelligible could not answer. But "outside" by going to my external IP, you can see everything I have open.