share-internet.sh

#!/bin/bash
# desc   share your internet access to another v.2
# author root@abimayu.com
# site   www.abimayu.com
#
# another computer use this range 172.16.1.2 - 172.16.1.254
# to run, running this command
# sudo bash share-internet.sh

# set interface
sudo ifconfig eth1 down
sudo iwconfig eth1 channel 4
sudo iwconfig eth1 mode ad-hoc
sleep 1;
sudo ifconfig wlan0 172.16.1.1/24 up

# set as gateway to internet
sleep 0.5;
sudo echo 1 > /proc/sys/net/ipv4/ip_forward
sudo iptables -F
sudo iptables -t nat -F
sudo iptables -t nat -A POSTROUTING -s 172.16.1.0/24 -j MASQUERADE
sudo iptables -A FORWARD -s 172.16.1.0/24 -j ACCEPT