查看防火墙是否开启 chkconfig iptables --listip
iptables 0:off 1:off 2:off 3:off 4:off 5:off 6:offtable
chkconfig --add iptables //iptables 添加到系统服务iptables
chkconfig --level 2345 iptables on //修改服务的默认启动级别防火墙
如今再看chkconfig iptables --listtab
iptables 0:off 1:off 2:on 3:on 4:on 5:on 6:offco