# service iptables status
# service iptables stop
# service iptables start
查询卡机防火墙是否自启动
[root@CactiEZ ~]# chkconfig --list | grep iptables
iptables       	0:off	1:off	2:on	3:on	4:on	5:on	6:off
由此可见:2/3/4/5都是开机启动,数字代表runlevel等级
[root@CactiEZ ~]# chkconfig iptables off
[root@CactiEZ ~]# chkconfig --list | grep iptables
iptables       	0:off	1:off	2:off	3:off	4:off	5:off	6:off
[root@CactiEZ ~]# chkconfig iptables on
[root@CactiEZ ~]# chkconfig --list | grep iptables
iptables       	0:off	1:off	2:on	3:on	4:on	5:on	6:off
原文:https://www.cnblogs.com/shmebluk/p/13734749.html