I have raspberry pi running a tightvnc server. I can locally connect to it at 192.168.1.3:1
You must append at :1 at the end to signify the first instance thats running i assume? I know its not a port like in most applications. Because if you accidentally start another instance of the vnc server, you use a :2 to access the second instance.
So, you can type that in, tightvnc asks for a password and you're in.
Outside of the network I type in my dynamic dns address, but have no idea how to append that :1 without it thinking its a port. I've tried my dynamic address and :1 , I've tried with port 5800, I've even used my actual external ip.
All ports are forwarded, I know the dynamic dns address is active due to a mumble server I always have running and I can ssh into the machine with putty.