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Old 09-19-2004, 04:10 AM   #1
Registered: Sep 2004
Posts: 37

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How to share internet

I have 2 computers 1 linux redhat 9 and one windows computer. I have an ethernet switch and i also have 2 lan cards in my linux computer. i have everything set up and my local area connection is working fine, but i want to get on the internet with my windows computer.

My friends says i have to somehow enable share internet on the linux mashine, but he uses mandrake and does not know where this option is on redhat 9

so my question is, can someone tell me how enable share internet on linux redhat 9.0. or if that is not possible, how i could actually connect both computers to the internet using 2 lan cards and a switch (i actually have 3 lan cards if you count the one in my windows computer)

thanks already in advance
Old 09-19-2004, 04:24 AM   #2
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Registered: May 2003
Location: INDIA
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hi there

i have ben doing the other way(sharing net on windowx and accessing through linux)b ut i no that u can share internet by configuring a either proxy(squid)
or by Ip forwarding

maybe u can look in this direction

Old 09-19-2004, 05:00 AM   #3
Registered: Aug 2004
Location: Greece
Distribution: Fedora Core 2, DeLi Linux 0.6.1, Slackware 10.0
Posts: 105

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you have to use IP forwarding and Masquerading

try the following link: ""
for a made simple howto

and the TLDP howto ""
Old 09-19-2004, 05:28 AM   #4
Registered: Feb 2004
Location: Australia
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yep I have done this before and you have to set up IP Masquerading
Old 09-19-2004, 05:30 AM   #5
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for ip forwarding ur kernel should support that or u have to compile ur kenel for that

or try going for squid proxy

Old 09-19-2004, 06:10 AM   #6
Registered: Mar 2004
Distribution: Debian Sarge, FC4
Posts: 100

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echo "1" > /proc/sys/net/ipv4/ip_forward
iptables -t nat -A POSTROUTING -o ppp0 -j MASQUERADE
That's what I use. I'm dial up for you'll probably need to modify it.


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