- Category : Linux Helpline (Easy Guide)
- Posted on : Jun 11, 2019
- Views : 751
- By : Naftali P.
If you have a wireless internet device connected to your laptop, then you can use your laptop as an internet gate way in your LAN . Other computers can access internet through your laptop. If your internet is fast you can run a small office over that wify connection.
Let me explain how it possible.
So you need two NIC’s in your computer and running Linux operating system.
Your Laptop configuration:
wlan0 -> This will be connected to public internet and you can access internet from your laptop
eth0 -> This will connect to your lan or switch , let us assign an ip for it 10.0.0.100
Now perform the following commands.
# echo 1 > /proc/sys/net/ipv4/ip_forward # /sbin/iptables -t nat -A POSTROUTING -o wlan0 -j MASQUERADE # /sbin/iptables -A FORWARD -i wlan0 -o eth0 -m state –state RELATED,ESTABLISHED -j ACCEPT # /sbin/iptables -A FORWARD -i eth0 -o wlan0 -j ACCEPT
Now go to nearest computer and configure an ip address on range 10.0.0.100/24 , make sure to use gateway ip 10.0.0.100 . You can also use public name servers 18.104.22.168 and 22.214.171.124
Now access internet and surf the world. Enjoy it. If you need to use this after a reboot , make sure the above iptable rules must be saved.
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