配置Cento6.4 iptables防火墙。
美国、香港服务器
配置Cento6.4 iptables防火墙。
04-17 来源:
配置Cento6.4 iptables防火墙。
1. 查看防火墙状态
# service iptables status
或：
# /etc/init.d/iptables status
说明：下面也可以用此方法操作。
2.关闭 /开启/重启防火墙
# service iptables stop
# service iptables start
# service iptables restart
4.永久关闭防火墙
# chkconfig --level 35 iptables off
然后重启系统使其生效：
# shutdown -r now
5.设置开启80端口访问
>先查看防火墙状态：
[root@localhost nginx]# service iptables status
Table: filter
Chain INPUT (policy ACCEPT)
num target prot opt source destination
1 ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED
2 ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0
3 ACCEPT all -- 0.0.0.0/0 0.0.0.0/0
4 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:22
5 REJECT all -- 0.0.0.0/0 0.0.0.0/0 reject-with icmp-host-prohibited
Chain FORWARD (policy ACCEPT)
num target prot opt source destination
1 REJECT all -- 0.0.0.0/0 0.0.0.0/0 reject-with icmp-host-prohibited
Chain OUTPUT (policy ACCEPT)
num target prot opt source destination
>设置80端口（或者手动修改/etc/sysconfig/iptables）
[root@localhost ~]# /sbin/iptables -I INPUT -p tcp --dport 80 -j ACCEPT
You have new mail in /var/spool/mail/root
>保存设置
[root@localhost ~]# /etc/rc.d/init.d/iptables save
iptables: Saving firewall rules to /etc/sysconfig/iptables: [ OK ]
>再查看防火墙状态
[root@localhost ~]# service iptables status
Table: filter
Chain INPUT (policy ACCEPT)
num target prot opt source destination
1 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:80
2 ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED
3 ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0
4 ACCEPT all -- 0.0.0.0/0 0.0.0.0/0
5 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:22
6 REJECT all -- 0.0.0.0/0 0.0.0.0/0 reject-with icmp-host-prohibited
Chain FORWARD (policy ACCEPT)
num target prot opt source destination
1 REJECT all -- 0.0.0.0/0 0.0.0.0/0 reject-with icmp-host-prohibited
Chain OUTPUT (policy ACCEPT)
num target prot opt source destination
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