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turtle.sh
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turtle.sh
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#!/bin/bash
# Your lanturtle is now automatically configured for you by this script, but if you want to configure it manully here is how:
# This is just a modifed version of wp5.sh for the pineapple with the turtle network address and bannder
# You will need to manully cofigure the default gw on your turtle to 172.16.84.42
# To do that run this command on your turtle: route add default gw 172.16.84.42
# You will also need to set your DNS settings, add the following line to /etc/resolv.conf on your turtle
# nameserver: 8.8.8.8
#
# I hope this makes development for turtle modules less of a pain... who wants to be tethered to a cable anymore?
# - Newbi3
#
# Credit goes to whoever wrote the wp5.sh script for the wifi pineapple as well as foxtrot for adding the automatic lan turtle configuration.
#
echo "$(tput setaf 2)"
echo " LAN TURTLE"
echo " by Hak5"
echo " .-./*) (*\.-."
echo " _/___\/ \/___\_"
echo " U U U U"
echo "Turtle ICS: v1.2"
echo "$(tput sgr0)"
echo -n "Turtle Netmask [255.255.255.0]: "
read turtlenetmask
if [[ $turtlenetmask == '' ]]; then
turtlenetmask=255.255.255.0 #Default netmask for /24 network
fi
echo -n "Turtle Network [172.16.84.0/24]: "
read turtlenet
if [[ $turtlenet == '' ]]; then
turtlenet=172.16.84.0/24 # Turtle network. Default is 172.16.84.0/24
fi
echo -n "Interface between PC and Turtle [eth1]: "
read turtlelan
if [[ $turtlelan == '' ]]; then
turtlelan=eth1 # Interface of ethernet cable directly connected to Turtle
fi
echo -n "Interface between PC and Internet [wlan0]: "
read turtlewan
if [[ $turtlewan == '' ]]; then
turtlewan=wlan0 #i.e. wlan0 for wifi, ppp0 for 3g modem/dialup, eth0 for lan
fi
tempturtlegw=`netstat -nr | awk 'BEGIN {while ($3!="0.0.0.0") getline; print $2}'` #Usually correct by default
echo -n "Internet Gateway [$tempturtlegw]: "
read turtlegw
if [[ $turtlegw == '' ]]; then
turtlegw=`netstat -nr | awk 'BEGIN {while ($3!="0.0.0.0") getline; print $2}'` #Usually correct by default
fi
echo -n "IP Address of Host PC [172.16.84.42]: "
read turtlehostip
if [[ $turtlehostip == '' ]]; then
turtlehostip=172.16.84.42 #IP Address of host computer
fi
echo -n "IP Address of Turtle [172.16.84.1]: "
read turtleip
if [[ $turtleip == '' ]]; then
turtleip=172.16.84.1 #Thanks Douglas Adams
fi
echo -n "Prefered DNS Server [8.8.8.8]: "
read turtledns
if [[ $turtledns == '' ]]; then
turtledns=8.8.8.8 # Default DNS server
fi
echo ""
echo "$(tput setaf 6) _ . $(tput sgr0) $(tput setaf 7)___$(tput sgr0) $(tput setaf 2) .-./*) $(tput sgr0) Internet: $turtlegw - $turtlewan"
echo "$(tput setaf 6) ( _ )_ $(tput sgr0) $(tput setaf 5)<-->$(tput sgr0) $(tput setaf 7)[___]$(tput sgr0) $(tput setaf 5)<-->$(tput sgr0) $(tput setaf 2) _/___\/ $(tput sgr0) Computer: $turtlehostip"
echo "$(tput setaf 6) (_ _(_ ,)$(tput sgr0) $(tput setaf 7)\___\\$(tput sgr0) $(tput setaf 2) U U $(tput sgr0) Turtle: $turtlenet - $turtlelan"
#Bring up Ethernet Interface directly connected to Turtle
ifconfig $turtlelan $turtlehostip netmask $turtlenetmask up
# Enable IP Forwarding
echo '1' > /proc/sys/net/ipv4/ip_forward
#echo -n "IP Forwarding enabled. /proc/sys/net/ipv4/ip_forward set to "
#cat /proc/sys/net/ipv4/ip_forward
#clear chains and rules
iptables -X
iptables -F
#echo iptables chains and rules cleared
#setup IP forwarding
iptables -A FORWARD -i $turtlewan -o $turtlelan -s $turtlenet -m state --state NEW -j ACCEPT
iptables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
iptables -A POSTROUTING -t nat -j MASQUERADE
#echo IP Forwarding Enabled
#remove default route
route del default
#echo Default route removed
#add default gateway
route add default gw $turtlegw $turtlewan
#echo Turtle Default Gateway Configured
# Change dns server to prefered DNS server
#sed -i 's/$turtleip/$turtledns/g' /etc/resolv.conf
sed -i s/$turtleip/$turtledns/g /etc/resolv.conf
#automatically try to configure LAN Turtle
#special thanks to Foxtrot for this part
ping -i 1 -c1 $turtleip
if [ $? -eq 0 ]; then
echo "ICS configuration successful."
echo "Configuring LAN Turtle."
echo "Enter password if prompted"
ssh root@$turtleip "echo \"nameserver $turtledns\" >> /etc/resolv.conf && route add default gw $turtlehostip"
else
echo "Could not connect to the LAN Turtle!"
fi
#fix routing on host machine
#the turtle likes to become your default gateway and thats annoying in this case so we just set it back and fix the dns settings
#route del default gw lan.turtle
#route add default gw $turtlegw
echo ""
echo "Happy Shelling :)"
echo ""