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Old 07-13-2004, 11:34 PM   #1
Registered: Mar 2003
Location: Malaysia
Posts: 63

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Sharing an Internet connection on Linux SUSE

Hi All,
I have a linux-SUSE based machine that contains 2 NICs (eth0 & eth1).
eth0 is connected to the WAN, and eth1 is connected to the LAN. I tried to give an Internet sharing to all users on the LAN through this box, but I faild.

I used to do the following in the redhat based boxes, but I faild with SUSE box:

1- create a file with the name rc.ipmasq in the directory /etc/rc.d
2- add the following rules to the file and save it:

iptables -t filter -F
iptables -t nat -F
iptables -t mangle -F

iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE

echo 1 > /proc/sys/net/ipv4/ip_forward

3- chomd 755 rc.ipmasq
4- to lunch this firewall during the boot I added the following line at the end of /etc/rc.d/rc.local

In fact I couldn't find the file rc.local in the /etc/rc.d/ directory in the Linux SUSE

So any body can direct me to perform my requirment.

Old 07-14-2004, 03:38 AM   #2
LQ Newbie
Registered: Oct 2003
Location: Wolverhampton
Distribution: Suse
Posts: 26

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It's much easier to use YAST2 - Security & users - Firewall.
tick the masquerade option together with any others you require and it will do the rest for you
the config file, if you need to do more config is /etc/sysconfig/SuSEfirewall2
Old 07-14-2004, 05:34 PM   #3
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Registered: Jun 2003
Location: Sydney
Distribution: Debian, FreeBSD
Posts: 1,713

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There's a very good IP Masquerading HOWTO on That's what I used and it works like a dream.

Last edited by adz; 07-14-2004 at 05:36 PM.
Old 08-13-2004, 09:23 AM   #4
LQ Newbie
Registered: Sep 2003
Location: just left of middle
Distribution: Ubuntu, Gentoo PPC, Slackware
Posts: 18

Rep: Reputation: 0
the file you are looking for is found at
/etc/rc.d/boot.d - in Suse 9.1


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