Centos Linux 开启端口 - 解决Centos发布服务外网访问不了的问题
# -------------- 查看服务器端口状态--------------------[root@zjxl-2 etc]#./etc/init.d/iptables statusTable: filterChain INPUT (policy DROP)num target prot opt source destination 1 ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 2 ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 3 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:22 4 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 multiport dports 20:30,80,110,443,3300:3500,5700:6100,7001,8000:13000 5 ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED Chain FORWARD (policy ACCEPT)num target prot opt source destination Chain OUTPUT (policy ACCEPT)num target prot opt source destination # ----------------------------发现没有开启6379和6380端口-------------------------------- # ----------------------------------开启6379端口---------------------------------[root@zjxl-2 etc]# /sbin/iptables -I INPUT -p tcp --dport 6379 -j ACCEPT[root@zjxl-2 etc]# /etc/init.d/iptables statusTable: filterChain INPUT (policy DROP)num target prot opt source destination 1 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:6379 2 ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 3 ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 4 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:22 5 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 multiport dports 20:30,80,110,443,3300:3500,5700:6100,7001,8000:13000 6 ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED Chain FORWARD (policy ACCEPT)num target prot opt source destination Chain OUTPUT (policy ACCEPT)num target prot opt source destination # ----------------------------------开启6380端口--------------------------------- [root@zjxl-2 etc]# /sbin/iptables -I INPUT -p tcp --dport 6380 -j ACCEPT# ------------------------------ 查看服务器端口状态---------------------------[root@zjxl-2 etc]# /etc/init.d/iptables statusTable: filterChain INPUT (policy DROP)num target prot opt source destination 1 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:6380 2 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:6379 3 ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 4 ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 5 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:22 6 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 multiport dports 20:30,80,110,443,3300:3500,5700:6100,7001,8000:13000 7 ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED Chain FORWARD (policy ACCEPT)num target prot opt source destination Chain OUTPUT (policy ACCEPT)num target prot opt source destination # ----------------------------------保存修改配置 --------------------------------- [root@zjxl-2 etc]# /etc/rc.d/init.d/iptables saveSaving firewall rules to /etc/sysconfig/iptables: [ OK ][root@zjxl-2 etc]#
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问题描述：
??????? 在Centos服务器上装好Redis缓存服务后，其他机器访问不了，提示连接超时。,郁闷,在网上找到解决方案：
??? /sbin/iptables?-I?INPUT?-p?tcp?--dport?6379 ?-j?ACCEPT
???? /sbin/iptables?-I?INPUT?-p?tcp?--dport?6380 -j?ACCEPT
然后保存：
??? /etc/rc.d/init.d/iptables?save
这样重启计算机后,CentOS防火墙默认已经开放了6379和6380端口。
这里应该也可以不重启计算机：
??? /etc/init.d/iptables?restart
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查看CentOS防火墙信息：
??? /etc/init.d/iptables?status
关闭CentOS防火墙服务：
??? /etc/init.d/iptables?stop
永久关闭：
?? chkconfig?–level?35?iptables?off
解决方案来源：http://hi.baidu.com/xiyi2008/item/345215b90948c4d085dd7978
