Hi
Have you tried to check if the port is open in the computer you are forwarding to? You can try that by this command
telnet 192.168.1.2:7744. You must try this from another device on the same lan. If the connection goes through, please check if your ISP supports port forwarding by eliminating the router and connect your pc directly to internet. If your ISP uses a carrier-grade nat then port forwarding is not possible.