I have static IP address and already running successfully ftp on it globally by using port forwarding but when i tried to put DVR online i failed. DVR works fine in the network but unable to check it online. Assign DVR port different from ftp port. Even disabled the ftp port then checked but no success. I am using TP-LINK TL-WR841N. Please help and sorry for bad grammar.
You could DMZ that mac or ip to the dvr. then you dont have to worry about what actual ports are needed.