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Thread: Howto Share internet connection

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  1. #1
    Join Date
    Jun 2005



    The following will explain how to share your Internet connection:

    Note: Type all the following commands in a root terminal, DO NOT use sudo.

    1. Start by configuring the network card that interfaces to the other computers on you network:

    # ifconfig ethX ip

    where ethX is the network card and ip is your desired server ip address (Usually is used)

    2. Then configure the NAT as follows:

    # iptables -t nat -A POSTROUTING -o ethX -j MASQUERADE

    where ethX is the network card that the Internet is coming from

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

    3. Install dnsmasq and ipmasq using apt-get:

    # apt-get install dnsmasq ipmasq

    4. Restart dnsmasq:

    # /etc/init.d/dnsmasq restart

    5. Reconfigure ipmasq to start after networking has been started:

    # dpkg-reconfigure ipmasq

    6. Repeat steps 1 and 2.

    7. Add the line "net.ipv4.ip_forward = 1" to /etc/sysctl.conf

    # gedit /etc/sysctl.conf

    8. Reboot. (Optional)

    I hope this helps.

    Good luck!
    Last edited by anaoum; January 30th, 2006 at 05:33 AM. Reason: update


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