There are more then 400 Computers in your Office. You are appointed as a System Administrator.
But you don’t have Router. So, you are going to use your One Linux Server as a Router. How will
you enable IP packets forward?
1. /proc is the virtual filesystem, we use /proc to modify the kernel parameters at running time.
# echo “1” >/proc/sys/net/ipv4/ip_forward
2. /etc/sysctl.conf àwhen System Reboot on next time, /etc/rc.d/rc.sysinit scripts reads the file
/etc/sysctl.conf. To enable the IP forwarding on next reboot also you need to set the parameter.
Here 0 means disable, 1 means enable.