running script after closing telnet

Hi Guys, I have a question, is there a way or an option where i can run a script continuesly after i close the telnet window?? because im running a cobol program which runs several hours and im thinking that ill run it after office hours so the run will be finish the next day.. the thing is i need to shutdown my workstation which means closing the telnet window.. hope you can help me. Im still new in unix so Im not yet that familiar when it comes to unix. Thanks...

normally putting a "&" symbol after the command will make it run "in the background", and sould mean it still runs after you close the terminal

Not so,
a background process is vulnerable to SIGHUP signal.

Run the process as nohup process

nohup binary &