條件:一臺電腦,兩塊網(wǎng)卡,eth0聯(lián)網(wǎng),eth1內(nèi)網(wǎng)
設(shè)置內(nèi)網(wǎng)網(wǎng)卡參數(shù)
ifconfig eth1 192.168.31.1 broadcast 192.168.31.255 netmask 255.255.255.0
打開IP轉(zhuǎn)發(fā)功能
/etc/sysctl.conf : net.ipv4.ip forward=1 取消注釋, sudo sysctl -p
配置iptebles
sudo iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
sudo iptables -A FORWARD -i eth1 -o eth0 -m state --state RELATED,ESTABLISHED -j ACCEPT
sudo iptables -A FORWARD -i eth0 -o eth1 -j ACCEPT
host機(jī)器配置
ifconfig eth0 192.168.31.112
route add default gw 192.168.31.1