centos6.5 防火墙操作


service iptables status

 a) 重启后生效
  开启: chkconfig iptables on
  关闭: chkconfig iptables off


  b) 即时生效,重启后失效
  开启: service iptables start
  关闭: service iptables stop


开放端口 
iptables -I INPUT -m state --state NEW -m tcp -p tcp --dport 8080 -j ACCEPT

ftp
pasv_enable=YES
pasv_min_port=10000
pasv_max_port=10010

iptables -I INPUT -m state --state NEW -m tcp -p tcp --dport 21 -j ACCEPT
iptables -I INPUT -m state --state NEW -m tcp -p tcp --dport 10000:10010 -j ACCEPT

iptables -I INPUT -m state --state NEW -m tcp -p tcp --dport 8000:20000 -j ACCEPT


service iptables save
service iptables restart

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转载自powertech.iteye.com/blog/2299988