linux系统对外开放3306、8080等端口，防火墙设置详解

# Firewall configuration written by system-config-firewall 
# Manual customization of this file is not recommended. 
*filter 
:INPUT ACCEPT [0:0] 
:FORWARD ACCEPT [0:0] 
:OUTPUT ACCEPT [0:0] 
-A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT 
-A INPUT -p icmp -j ACCEPT 
-A INPUT -i lo -j ACCEPT 
-A INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT 
-A INPUT -j REJECT --reject-with icmp-host-prohibited 
-A FORWARD -j REJECT --reject-with icmp-host-prohibited 
COMMIT 

-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 3001 -j ACCEPT 

-A INPUT -m state --state NEW -m tcp -p tcp --dport 8080 -j ACCEPT 

-A INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT 

# Firewall configuration written by system-config-firewall 
# Manual customization of this file is not recommended. 
*filter 
:INPUT ACCEPT [0:0] 
:FORWARD ACCEPT [0:0] 
:OUTPUT ACCEPT [0:0] 
-A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT 
-A INPUT -p icmp -j ACCEPT 
-A INPUT -i lo -j ACCEPT 
-A INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT 
-A INPUT -m state --state NEW -m tcp -p tcp --dport 8080 -j ACCEPT 
-A INPUT -j REJECT --reject-with icmp-host-prohibited 
-A FORWARD -j REJECT --reject-with icmp-host-prohibited 
COMMIT 

service iptables restart 

/sbin/iptables -L -n 

开启： chkconfig iptables on 
关闭： chkconfig iptables off 

开启： service iptables start  
关闭： service iptables stop