I've install guarddog on Debian and configured it, making very sure that the Disable Firewall box is unchecked.
However, while running sysv-rc-conf, noticed that the guarddog service from 0-6 is unchecked, only level S is checked.
Googled quite a bit but is unable to find what level S is
So ,
is guarddog running on startup ?
and what is runlevel S ?
Thanks in advance for any advise.