Christopher Chan wrote:
On Tuesday, June 28, 2011 02:38 AM, Ljubomir Ljubojevic wrote:
John R Pierce wrote:
On 06/27/11 10:43 AM, Ljubomir Ljubojevic wrote:
note that doesn't show all the pertinent info. I prefer `iptable -L
-vn`, and it still doesn't show the nat tables, you also need
`iptable -L -vn -t nat` to see those chains, and `iptable -L -vn -t
mangle` if you're using any mangle entries.
iptables-save is designed for iptables output.
sure, for saving to the startup scripts.... the commands I listed
above were to display the tables with full info... Without the -v
flag, -L only shows part of the important stuff.
iptables-save man:
DESCRIPTION:
iptables-save is used to dump the contents of an IP Table in easily
parseable format to STDOUT. Use I/O-redirection provided by your shell
to write to a file.
You seem to have a problem understanding what John is saying. When you
add the v flag, iptables will also report in/out interfaces so that you
don't have to guess when you are trying to fix up the rules on the spot
and not by editing some file.
My point should have been that listing digested result with "iptables
-L..." is not what we needed from OP. In order to help him solve his
problem, he needed to output his *rules*. not a "nice presentation of
used rules".
With iptables-save he/we could see actual rules used for creating
Fedora and CentOS firewall, so he/we can use that output to suggest
exact rules he needs.
I started wrestling with iptables rules in 2005 when I started working
as networking admin and had to solve some very hard problems including
policy routing, marking packets in right order, etc. Since then gained a
lot of experience in helping others (on several forum sites) understand
what they have and what they need to add/remove/change.
With iptables-save you get reusable output and all you need to do is to
say "used this, this, and that rule, change that one and remove that
one, and it should work", so there is no chance of making an error in
converting (retyping) iptables -L to actual rules already provided with
iptables-save.
Ljubomir
_______________________________________________
CentOS mailing list
CentOS@xxxxxxxxxx
http://lists.centos.org/mailman/listinfo/centos
