Route 2 PC

wiran03 · 12-06-2010, 08:42 PM

I have a two card on same machine, I would like to route the PC1 to PC3,.. Please help

I'm using Fedora 9 as my router:

---------------Fedora 9
-------------/---------\
----------Switch 1----Switch 2
-------192.168.26.x--192.168.22.x
---------/-----\------ /-----\
-------PC 1----PC 2---PC 3---PC 4

Thanks ,..

chickenjoy · 12-06-2010, 10:40 PM

1. make sure ip forwarding is enabled in your 'Fedora 9' and also do the following:

Code:

# vi /etc/sysctl.conf
	net.ipv4.ip_forward = 0			<--- change to 1
# sysctl -p
# chkconfig iptables on | service iptables start
# iptables -F OUTPUT
# iptables --table nat --append POSTROUTING --out-interface eth0 -j MASQUERADE	<--- device attached to switch 2
# iptables --append FORWARD --in-interface eth1 -j ACCEPT	<--- device attached to switch 1

2. run in PC1(if its linux): if your PC1 is a non-linux machine then you should check on how routing is done on that operating system.

Code:

# route add -net 192.168.22.0 netmask 255.255.255.0 gw <ip_address_of_Fedora_9>

note: the route command given in step 2 is only temporary and will not be present upon next reboot. You will have to find out yourself how to make it permanent. This commands worked in my instance and may need some modifications to work on others.