not able to add iptable rule

[sureshk89]

Hi
In my new Centos i am not able to add iptable rule.
iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-port 3128
bash: iptables: command not found
I am getting this error. I use this rule to forward ports to squid.

Thanks and Regards
Suresh

[meton_magis]

are you running the command as root, or your regular user?

[sureshk89]

I am running as root only. I tried installing ubuntu in another machine its working fine and i can add rules. but in centos i am not able to add these rules. Mine is centos 5.5, RHEL version 5

[Lazydog]

You say you are root when doing this. Did you log in as root, su - or sudo for root?

OK, try the following. It looks like the file is not in your path.

locate iptables

This should tell you where iptables is located on your system.

$PATH

This will give you your current path. Look at it and ensure that the above output path is in your current path.

If it is not you then have 2 choices. Either add it to your PATH statement (google for how to do this) or run the commend with FQP.

[peacengell]

Hi bro i would say edit this file
/etc/sysconfig/iptables and add the line
-t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-port 3128

this line should be before commit line ok

[meton_magis]

Hi bro i would say edit this file
/etc/sysconfig/iptables and add the line
-t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-port 3128

this line should be before commit line ok

That would work, just realize that the file is obliterated by the system-config-iptables (or is it system-config-firewall ...) tool. so if you do that, never run the config tools.