Linux iptables防火墙如何开放MySQL连接端口 - Linux - 服务器之家

服务器之家

专注于服务器技术!
当前位置:首页 > 服务器系统 > Linux

Linux iptables防火墙如何开放MySQL连接端口

发布时间:2014-04-15 来源:服务器之家

修改防火墙配置文件:
vi /etc/sysconfig/iptables
增加下面一行:
-A RH-Firewall-1-INPUT -m state –state NEW -m tcp -p tcp –dport 3306 -j ACCEPT
如果想开通21等端口,只需要将3306换成21等要开放的端口就可以了。
配置后,重新启动iptable
service iptables restart
这时就可以从其他机器访问Mysql了。

注意:
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 3306 -j ACCEPT
-A RH-Firewall-1-INPUT -j REJECT --reject-with icmp-host-prohibited

-A   RH-Firewall-1-INPUT   -j   REJECT   --reject-with   icmp-host-prohibited 
  是拒绝icmp访问,对于其它的报文返回一个主机禁止访问的错误

开通3306 端口的行必须在icmp-host-prohibited前

 

 

Open port 80

Open flle /etc/sysconfig/iptables:
# vi /etc/sysconfig/iptables
Append rule as follows:
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 80 -j ACCEPT
Save and close the file. Restart iptables:
# /etc/init.d/iptables restart

Open port 110

Append rule as follows:
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 110 -j ACCEPT

Open port 143

Append rule as follows:
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 143 -j ACCEPT

Restart iptables service

Type the following command:
# service iptables restart

Verify that port is open

Run following command:
netstat -tulpn | less
Make sure iptables is allowing port 80 / 110 / 143 connections:
iptables -L -n

Refer to iptables man page for more information about iptables usage and syntax:
man iptables