Trapping control-c for netcat

Oxagast · 03-31-2008, 02:58 PM

Hi,
I am using netcat for a shell, and I will be connected, but when inside the shell, if I need to use "ctrl-c", it will end up killing netcat instead of the program I am running in the shell on the other machine. I've tried playing around with trap, and I read the man pages for netcat, but I can't figure out a way to have netcat not die on ctrl-c. Any ideas?

Thanks,
Marshall

osor · 03-31-2008, 03:42 PM

If you are using bash as netcat’s parent shell, try Ctrl-V then Ctrl-C.

Oxagast · 03-31-2008, 04:14 PM

That doesn't work. It just says ^C in the terminal, but doesn't send the signal to the process inside the terminal.

matthewg42 · 03-31-2008, 06:19 PM

Why not just log in with a proper service like ssh? Note that hacking (as in system cracking, not the original technology enthusiast definition) discussions are not welcome on LQ. My apologies for the implication if your purpose is good, it's just that this is a very classic h@x0r technique for getting a remote shell.

konsolebox · 04-01-2008, 12:39 AM

i'm not sure if that will work.. even though you'll be able to configure netcat to handle ^C in the local machine and be able to send the ^C character.. you still won't be able to summon the signal.. i think it can only be done in the remote machine.