我有以下 iptables 规则：
Chain INPUT (policy DROP)
target prot opt source destination
ACCEPT tcp -- anywhere anywhere tcp dpt:ssh
ACCEPT tcp -- anywhere anywhere tcp dpt:http
ACCEPT tcp -- anywhere anywhere tcp dpt:https
ACCEPT tcp -- localhost.localdomain anywhere tcp dpt:mysql
ACCEPT tcp -- anywhere anywhere tcp dpt:14443
ACCEPT tcp -- anywhere anywhere tcp dpt:ftp
ACCEPT tcp -- anywhere anywhere tcp dpt:ftp-data
ACCEPT tcp -- anywhere anywhere tcp dpt:xxxxxxx
Chain FORWARD (policy ACCEPT)
target prot opt source destination
Chain OUTPUT (policy …