Description of problem:
iptables is pretty mysterious to the new administrator (me), and the clever
rules provided by system-config-securitylevel make it even more so.  It would be
good to have a bit of documentation come with system-config-securitylevel, with
a help button on its window and also a link to it in the comments it puts at the
head of /etc/sysconfig/iptables.  That documentation (probably a simple html or
text file) should point to basic iptables docs for the basic theory (Rusty's
iptables HOWTO would be good), and then should explain the rules that
system-config-securitylevel applies:

Remind users that system-config-securitylevel will overwrite any changes made to
/etc/sysconfig/iptables, but only if OK is pressed.

Link to Rusty's iptables HOWTO, but remind us of the basics:  only IP (TCP/IP,
etc) traffic is filtered by iptables -- other protocols over the network
interfaces don't go through it; traffic /to/ our IPs goes through INPUT, traffic
/to/ elsewhere goes through FORWARD, traffic /from/ our IPs goes through OUTPUT.

Explain each rule.

Explain why INPUT and FORWARD use the same rules, and suggest when the FORWARD
rules might be relaxed (eg, when bridging).

Version-Release number of selected component (if applicable):
system-config-securitylevel-1.6.27-1.i386

How reproducible:


Steps to Reproduce:
1.
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Actual results:


Expected results:


Additional info:
As I said, I'm new to this.  Some of what I said may be wrong.  If you want, ask
me to write a draft, but be sure to check it carefully!