halo, salam buat semua... di bawah ini saya lampirkan script nat saya, siapa tahu ada yang butuh.
versi terbaru ada di : http://www.indosarva.net/~budi/files/script-nat # --------------------- cut di sini ----------------------- #!/bin/bash2 # # nat_script for Linux version 0.1 (25 September 2002) # Author: Budi Aditya <[EMAIL PROTECTED]> # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2, or (at your option) # any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. #checking system releases. tmp=`uname -r` tmp2=`echo $tmp | grep 2.2` tmp3=`echo $tmp | grep 2.4` if [ "$tmp2" != "" ]; then KERNEL="2.2" elif [ "$tmp3" != "" ]; then KERNEL="2.4" fi #DEBUG STATIC DEBUG=1 if [ $DEBUG ]; then echo "KERNEL=$KERNEL" fi #static variables & common variables VERSION=0.1 #---------------------- system config info ----------------------------# #common info sysconf_dir="/etc/sysconfig/network-scripts" # masukkan interfaces2x lan anda dibawah ini lan_if=( eth1 ) lan_count=${#lan_if[@]} tmp=`whereis modprobe | awk '{print $2}'` MODPROBE=$tmp #spesific 2.2.x info #tambahkan ipmasq modules yang anda mau load dibawah ini ipchains_modules=( ip_masq_ftp ip_masq_irc ) ipchains_count=${#ipchains_modules[@]} #end of special 2.2.x info #spesific 2.4.x info public_ip_if="eth0" #tambahkan connection tracking helper module yang #hendak diload dibawah ini iptables_modules=( ip_conntrack_ftp ip_conntrack_irc ) iptables_count=${#iptables_modules[@]} #end of special 2.4.x info # --------------------- end system config info -------------------------# #======== spesific 2.2.x ========# if [ "$KERNEL" = "2.2" ]; then #--- collecting utils info ---# tmp=`whereis ipchains | awk '{print $2}'` IPCHAINS=$tmp #--- end collecting info --- # #--- collecting interfaces info --- i=0 while [ $i -lt $lan_count ] do #collecting netmask for $lan_if[$i] tmp=`/sbin/ifconfig ${lan_if[$i]} | grep Mask | awk '{ print $4}' | awk -F : '{print $2}'` lan_netmask[$i]=$tmp #end collecting netmask for $lan_if[$i] #collecting network for $lan_if[$i] tmp=`/sbin/route -n | grep ${lan_if[$i]} | grep ${lan_netmask[$i]} | awk '{print $1}'` lan_network[$i]=$tmp if [ $DEBUG ]; then echo "${lan_network[$i]}/${lan_netmask[$i]}" fi i=$(($i+1)) done #--- end collecting interfaces info ---# #----- begin modprobing ipchains modules ------# i=0 while [ $i -lt $ipchains_count ] do $MODPROBE ${ipchains_modules[$i]} i=$(($i+1)) done #----- end modprobing ipchains modules ------# #-------- begin ipmasq for 2.2.x ---------# #preparation for ipmasq i=0 echo "1" > /proc/sys/net/ipv4/ip_forward while [ $i -lt $lan_count ] do #checking existing ipchains rules tmp=`$IPCHAINS -L -n | grep ${lan_network[$i]}` if [ "$tmp" = "" ]; then $IPCHAINS -A forward -s ${lan_network[$i]}/${lan_netmask[$i]} -d ! ${lan_network[$i]}/${lan_netmask[$i]} -j MASQ fi i=$(($i+1)) done #-------- end ipmasq for 2.2.x ---------# #======== end of spesific 2.2.x ========# #======== begin spesific 2.4.x ========# elif [ "$KERNEL" = "2.4" ]; then #--- collecting utils info ---# tmp=`whereis iptables | awk '{print $2}'` IPTABLES=$tmp #--- end collecting utils info --- # #--- collecting interfaces info --- i=0 while [ $i -lt $lan_count ] do #gathering ${lan_if[$i]} interfaces info #gathering network info tmp=`/sbin/ip route show | grep ${lan_if[$i]} | grep link | awk '{print $1}'` lan_network[$i]=$tmp if [ $DEBUG ]; then echo ${lan_network[$i]} fi i=$(($i+1)) done tmp=`/sbin/ip addr show | grep $public_ip_if | grep inet | awk '{print $2}' | awk -F "/" '{print $1}'` public_ip=$tmp #--- end collecting interfaces info --- #--------- begin modprobing iptables modules --------# i=0 while [ $i -lt $iptables_count ] do $MODPROBE ${iptables_modules[$i]} i=$(($i+1)) done #--------- end of modprobing iptables modules --------# #---------- begin nat'ed for 2.4.x ---------# #preparation for nating.. i=0 echo "1" > /proc/sys/net/ipv4/ip_forward while [ $i -lt $lan_count ] do #checking existing ipchains rules tmp=`$IPTABLES -t nat -L -n | grep ${lan_network[$i]}` if [ "$tmp" = "" ]; then $IPTABLES -t nat -A POSTROUTING -s ${lan_network[$i]} -d ! ${lan_network[$i]} -j SNAT --to $public_ip fi i=$(($i+1)) done #---------- end of nat'ed for 2.4.x --------# fi #------- end spesific 2.4.x --------# #--------------------- cut di sini -------------------------------- -- Utk berhenti langganan, kirim email ke [EMAIL PROTECTED] Informasi arsip di http://www.linux.or.id/milis.php3
