[root@Centos7 ~]# iptables -L
 
  Chain INPUT (policy ACCEPT)
 
  target prot opt source destination 
 
  DROP all -- anywhere anywhere state INVALID 
 
  ACCEPT icmp -- anywhere anywhere 
 
  ACCEPT all -- anywhere anywhere 
 
  ACCEPT tcp -- anywhere anywhere state NEW,ESTABLISHED tcp dpt:ssh 
 
   
  ACCEPT gre -- anywhere anywhere state NEW,ESTABLISHED 
 
  ACCEPT all -- anywhere anywhere state RELATED,255)">REJECT all -- anywhere anywhere reject-with icmp-host-prohibited 
 
  Chain FORWARD (policy ACCEPT)
 
  ACCEPT all -- anywhere anywhere state NEW,255)">Chain OUTPUT (policy ACCEPT)
 
  DROP all -- anywhere anywhere state INVALID 
 
   
 
   
 
  [root@Centos7 ~]# iptables -t nat -L
 
  Chain PREROUTING (policy ACCEPT)
 
  target prot opt source destination 
 
  Chain POSTROUTING (policy ACCEPT)
 
  MASQUERADE all -- 10.0.6.0/24 anywhere 
 
  Chain OUTPUT (policy ACCEPT)
 
  target prot opt source destination