#/bin/sh

/bin/rm -f /etc/dnsmasq.conf
/sbin/ifconfig eth0 down

#################################################################
# This script for sharing wlan0 connection via eth0 port.
#
# [AnyWiFi AP] --wireless-- [LinuxBox] <-wire-> pc1,pc2,pc3....
#
# Requires dnsmasq
# http://www.thekelleys.org.uk/dnsmasq/doc.html
#
# Tested on Kali linux 1.0.6 (April.2014)
# http://d.hatena.ne.jp/AO533/20140411/p1
#
#
#### Configure ##################################################
# E.G. DHCP ranges are 192.168.1.101-108 , 24H(default)
# These settings are eth0 -> 192.168.1.100

SUBNET=192.168.1
ifconfig eth0 "$SUBNET".100 netmask 255.255.255.0
#                      ^^^^^

# Setup for dnsmasq services.
echo "interface=eth0" > /etc/dnsmasq.conf
echo "dhcp-range="$SUBNET".101,"$SUBNET".108,24h" >> /etc/dnsmasq.conf
#                         ^^^^^          ^^^^
#################################################################

/sbin/ifconfig eth0 up

# ipMasquerade BoilerPlate text.
sysctl -w net.ipv4.ip_forward=1
iptables -t nat -A POSTROUTING -o wlan0 -j MASQUERADE
iptables -F FORWARD
iptables -A FORWARD -j ACCEPT

service dnsmasq restart

iptables -nvL
route -n

## EOF