#!/bin/sh
#
# addip.sh
#
# Description: This script adds an IP address on a system. You
# need to specify the IP address to add and the subnet mask. You
# need to run this script as the root user.
#
# Example: addip.sh IP_ADDRESS SUBNET_MASK
#
# Copyright 2007 Permicity LLC. All Rights Reserved
#

(($# != 2)) && { echo "Usage $0 IP_ADDRESS SUBNET_MASK" >&2; exit 1; }

NEWALIAS=`ifconfig | grep eth0 | awk '{ print $1 }' | tail -1 | sed -e 's/:/ /g' | awk '{ print $2 }'`
NEWALIAS=`expr $NEWALIAS + 1 `

/sbin/ifconfig eth0:$NEWALIAS $1 netmask $2 up

#!/bin/sh
#
# addgw.sh
#
# Description: This script adds the default gateway on a system. You
# need to specify the IP address of the default gw to add. You
# need to run this script as the root user.
#
# Example: addgw.sh GATEWAY_IP_ADDRESS
#
# Copyright 2007 Permicity LLC. All Rights Reserved
#

(($# != 1)) && { echo "Usage $0 GATEWAY_IP_ADDRESS" >&2; exit 1; }

/sbin/route add default gw $1

#!/bin/sh
#
# addforwarding.sh
#
# Description: This script adds the forwards a port on the local machine
# to a port on the remote machine. You need to specify the IP address
# of the local machine, the local port, the IP address of the remote
# machine, and the remote port. You need to run this script
# as the root user.
#
# Example: addforwarding.sh LOCAL_IP_ADDRESS LOCAL_PORT REMOTE_IP_ADDRESS REMOTE_PORT
#
# Copyright 2007 Permicity LLC. All Rights Reserved
#

(($# != 4)) && { echo "Usage $0 LOCAL_IP_ADDRESS LOCAL_PORT REMOTE_IP_ADDRESS REMOTE_PORT" >&2; exit 1; }

/sbin/iptables -t nat -A PREROUTING -p tcp -i eth0 -d $1 --dport $2 -j DNAT --to $3:$4
/sbin/iptables -A FORWARD -p tcp -i eth0 -d $3 --dport $4 -j ACCEPT