service iptables start 无反应的解决方法;

[root@lt ~]# service iptables status

防火墙已停

[root@lt ~]# service iptables start

[root@lt ~]# service iptables status

防火墙已停

比如，配置文件在yum安装时没有生成。

解决方法：

方法1（推荐）.初始化iptables。

iptables -F

service iptables save

service iptables restart

方法2.手工添加配置文件。

www.landui.com

vi /etc/sysconfig/iptables

把预置的iptables规则添加进去就可以了：

# Firewall configuration written by system-config-securitylevel

# 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 -p 50 -j ACCEPT

-A RH-Firewall-1-INPUT -p 51 -j ACCEPT

-A RH-Firewall-1-INPUT -p udp –dport 5353 -d 224.0.0.251 -j ACCEPT

-A RH-Firewall-1-INPUT -p udp -m udp –dport 631 -j ACCEPT

-A RH-Firewall-1-INPUT -p tcp -m tcp –dport 631 -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 –dport 22 -j ACCEPT

-A RH-Firewall-1-INPUT -m state –state NEW -m tcp -p tcp –dport 80 -j ACCEPT

-A RH-Firewall-1-INPUT -m state –state NEW -m tcp -p tcp –dport 443 -j ACCEPT

-A RH-Firewall-1-INPUT -j REJECT –reject-with icmp-host-prohibited

COMMIT