#Manual customization of this file is not recommended
*filter
:INPUT ACCEPT[0:0]
:FORWARD ACCEPT[0:0]
:OUTPUT ACCEPT[0:0]

:RH-Firewall-1-INPUT-[0:0]
:-A INPUT -j RH-Firewall-1-INPUT
-A FORWARD -j -RH-Firewall-1-INPUT
-A RH-Firewall-1-INPUT -i lo -j ACCEPT
-A RH-Firewall-1-INPUT -p icmp --icmp-type any -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
-A RH-Firewall-1-INPUT -M state --state NEW -m tcp -p tcp -s 192.168.0.0/255.255.255.0 --dport 22 -j ACCEPT
-A RH-Firewall-1-INPUT -J REJECT --reject-with icmp-host-prohibited
COMMIT

 

 

 

51cto网友高手谁能详细的给解释一下，非常感谢！