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Operating Systems => Linux and UNIX => Topic started by: Maniaman on 28 October 2002, 03:33

Title: Sharing Internet Connection
Post by: Maniaman on 28 October 2002, 03:33

Ok. I'm using Mandrake 9.0
I want to share the internet connection with a Windows XP system. I tried using Mandrake's Internet Connection Sharing, but the XP machine doesn't recognize the connection. I'm running Samba Server.  Any idea how to get it to work?


And - The XP machine is my dadsmachine. He won't let me put Linux on it   :(

Title: Sharing Internet Connection
Post by: Stryker on 28 October 2002, 03:56

You could try to set up a proxy server, or even better you could set up mandrake as a router. ipchains will do this for you.

Title: Sharing Internet Connection
Post by: Master of Reality on 28 October 2002, 04:25

echo "1" > /proc/sys/net/ip_forward
ipchains -P forward DENY
ipchains -A forward -i eth0 -s 192.168.0.2 -d 0/0 -j MASQ

replace 192.168.0.2 with the IP address of the winxp machine. Also make sure you set your linux computer as the gateway in winxp.

Title: Sharing Internet Connection
Post by: Maniaman on 3 November 2002, 22:59

I'm having problems with this ipchains thing.

[root@ip-addy-wuz-here root]# echo "1" > /proc/sys/net/ip_forward
bash: /proc/sys/net/ip_forward: No such file or directory


Now what do I need to do? Running Mandrake 9.0

Title: Sharing Internet Connection
Post by: voidmain on 3 November 2002, 23:21

On the newer kernels it's:

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

Also on the newer kernels (2.4+) you would want to use iptables rather than ipchains. And you would normally put that command and all the firewall commands/rules in a script. Now Mandrake is supposed to have a graphical tool for configuring the "connection sharing" which is what you are doing here. A more common name for this is "IP Masquerading". Here is the HOWTO:

http://www.tldp.org/HOWTO/IP-Masquerade-HOWTO/ (http://www.tldp.org/HOWTO/IP-Masquerade-HOWTO/)