linux端口映射命令行

iptables -t nat -A PREROUTING -d issence.3322.org -p tcp -m tcp –dport 4899 -j DNAT –to-destination 192.168.0.147:4899
iptables -t nat -A POSTROUTING -d 192.168.0.147 -p tcp -m tcp –dport 21 -j SNAT –to-source 192.168.0.1