nat outbound static
nat outbound 2001 address-group 2
nat server protocol tcp global 218.xx.xxx.xxx 8081 inside 192.168.xxx.xx 8081
nat server protocol icmp global 218.xx.xxx.xxx inside 192.168.xxx.xx
nat server protocol tcp global 218.xx.xxx.xxx 8080 inside 192.168.x.x 8080
最后以行是这样的
nat server protocol tcp global 218.xx.xxx.xxx 8080 inside 192.168.xxx.xx 8080