[fedora-india] Some query....

[Manish Kathuria]

On Sun, Jun 5, 2011 at 3:41 PM, Mr. Jamal <jnizam67 at gmail.com> wrote:
> D/r all
> Pls ans me some query
> 1. Why used this folder /etc/rc.d/rc.local in proxy server(fedora)?
> 2. What does it mean that iptables -F, iptables -t nat -F, iptables -t nat
> -A POSTROUTING -o eth0 -j MASQUERADE, -t nat -A PREROUTING -i eth1 -p tcp
> --dport 80 -j REDIRECT --to-port 3128
> Thanks
>

1. First of all, rc.local is a file and not a folder. In this file you
can add commands, scripts to be run after the boot process is over and
all the system services have been started (but before the login prompt
appears).

2. These commands mean the following:

a. Flush (or delete) the existing iptables rules in the filter table
b. Flush (or delete) the existing iptables rules in the nat table
c. Change the source IP address of the forwarded packets going out
from the eth0 network interface to the IP address of interface.
d. Redirect the packets (meant to be forwarded) entering from the
network interface eth1, destined for port 80 to port 3128 on the same
system.

You should be able to set up routing for a transparent proxy using
these commands / rules.

HTH,
-- 
Manish Kathuria
Tux Technologies
http://www.tuxtechnologies.co.in/