Just use (as root/superuser):
Code:
#service iptables status
That's all you need in RHEL.
You can also use:
Code:
#service iptables stop
and
Code:
#service iptables start
To turn it off an on.
If you want to turn it off completely, you'll want to use the chkconfig command.
Code:
#chkconfig iptables off
or
Code:
#chkconfig iptables on
Which will make the changes for runlevels 2, 3, 4 and 5.
Will let you look at what services are set to be off and on based on runlevels.
Good luck!