Using netcat to allow users to use shell

Question

I'm not really sure where to start. I'm supposed to use netcat to allow anyone to access my shell remotely in C. I know I need to need to use sockets, but not sure what else. Can anyone point me in the right direction. Basically when I execute the program, I want it to open "nc -l 1234", take in commands from the client and respond. Thanks.

Answer 1

Try something like

mkfifo temp
nc -l 1234 < temp 2>&1 | /bin/sh > temp 2>&1

Answer 2

you can try

$nc -l 1234 -e /bin/bash -i  (server)

$nc x.x.x.x 1234  (client)

We have created a netcat server and indicated it to run /bin/bash command when connection is successful.

This is a good reference for it . (using c)

http://www.cs.swarthmore.edu/~aviv/classes/f12/cs43/labs/lab4/lab4.pdf