linux修改防火墙

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1: vi  /etc/sysconfig/iptables

# 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
-A INPUT -m state --state NEW -m tcp -p tcp --dport 3306 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 3690 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 2001 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 3001 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 80 -j ACCEPT

#-A INPUT -m state --state NEW -m udp -p tcp --dport 80 -j ACCEPT
COMMIT

2:service iptables restart

linux修改防火墙

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原文地址：http://www.cnblogs.com/zhenxi/p/4596028.html