레드햇 리눅스에서 Nat

레드햇에서 ipchains 사용

/etc/rc.d/rc.firewall

#!/bin/sh/sbin/depmod -a/sbin/modprobe ip_masq_ftp #/sbin/modprobe ip_masq_raudio #/sbin/modprobe ip_masq_irc #/sbin/modprobe ip_masq_quake ports=26000,27000,27910,27960 #/sbin/modprobe ip_masq_cuseeme #/sbin/modprobe ip_masq_vdolive echo “1” > /proc/sys/net/ipv4/ip_forward /sbin/ipchains -M -S 7200 10 160 /sbin/ipchains -P forward DENY /sbin/ipchains -A forward -s 192.168.0.0/24 -j MASQ /sbin/ipchains -A forward -s 192.168.1.0/24 -j MASQ

/etc/sysconfig/network NETWORKING=yes HOSTNAME=masq GATEWAY=211.205.224.1

/etc/sysconfig/network-script/ifcfg-eth0 DEVICE=eth0 BOOTPROTO=static BROADCAST=211.203.217.255 IPADDR=211.205.224.11 NETMASK=255.255.255.0 NETWORK=211.203.217.0 ONBOOT=yes USERCTL=no

/etc/sysconfig/network-script/ifcfg-eth1 DEVICE=eth1 ONBOOT=yes BOOTPROTO=none BROADCAST=192.168.0.255 NETWORK=192.168.0.0 NETMASK=255.255.255.0 IPADDR=192.168.0.1 USERCTL=no

/etc/sysconfig/network-script/ifcfg-eth2 DEVICE=eth2 ONBOOT=yes BOOTPROTO=none BROADCAST=192.168.1.255 NETWORK=192.168.1.0 NETMASK=255.255.255.0 IPADDR=192.168.1.1 USERCTL=no

원문

데비안에서 Nat 하기

#! /bin/sh
ifconfig eth0:0 192.168.0.1
iptables -A POSTROUTING -t nat -o eth0 -j MASQUERADE
echo 1 > /proc/sys/net/ipv4/ip_forward

eth0 에 192.168.0.1 로 엘리어싱 해주고 nat설정했다.

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