iptables -L -n  查詢目前iptables 規則

root@www ~]# iptables -L -n
######## 本機型防火牆設定 針對進來流量設定 ########
Chain INPUT (policy ACCEPT)   <==針對 input="" br="">

target  prot opt source     destination <==說明欄 span="">

ACCEPT  all  --  0.0.0.0/0  0.0.0.0/0   state RELATED,ESTABLISHED <==第 1="" span="">

ACCEPT  icmp --  0.0.0.0/0  0.0.0.0/0                             <==第 2="" span="">

ACCEPT  all  --  0.0.0.0/0  0.0.0.0/0                             <==第 3="" span="">

ACCEPT  tcp  --  0.0.0.0/0  0.0.0.0/0   state NEW tcp dpt:22      <==第 4="" span="">

EJECT  all  --  0.0.0.0/0  0.0.0.0/0   reject-with icmp-host-prohibited