Just make sure that you don't start IPTABLES or Firestarter,
since your on RH9 you will have a directory structure like:
Code:
/etc/rc.d/
    rc1.d/
    rc2.d/
    rc3.d/
    rc4.d/
    rc5.d/
    rc6.d/
Where you most possible will have in the directories
/etc/rc.d/rc3.d/ and /etc/rc.d/rc5.d/
two files named something like SXXiptables and/or SXXfirestarter, where the "XX" is the startorder of the file, just remove them, no worries, it is just symlink files, so you will not remove the actuall files.