How To Configurations Router Ubuntu Server

The first step

Enable ethernet 1 : " ifconfig eth1 up "

Step two

Then settings for ip address
ethernet 0 to internet
ethernet 1 to client

" nano /etc/network/interfaces "

Then Save Configurations " CTRL+ S "

Step three

After setting Continue to ' sysctl.conf ' with the command : " nano /etc/sysctl.conf "

then look : " #net.ipv4.ip_forward=1  "

Uncheck   (#)  : net.ipv4.ip_forward=1

Then press ctrl + x  and press Y  enter

Step Four

His next type this command after exit : " iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE "

Then Reboot System.

Step Five

Then go to settings ip windows

Use Gateway Ethernet 1

Now you can configure the router ubuntu.