linux防火墙开放80,3306,21,443端口
Others 2018-08-06 06:18:59 2018-08-06 06:18:59 2486 次浏览大家都知道服务器里的一些端口和防火墙之类的,在使用过程中能够起到很重要的作用,这里整理了一些关于配置防火墙,开启80端口、3306端口
vi /etc/sysconfig/iptables
-A INPUT -m state –state NEW -m tcp -p tcp –dport 80 -j ACCEPT(允许80端口通过防火墙)
-A INPUT -m state –state NEW -m tcp -p tcp –dport 3306 -j ACCEPT(允许3306端口通过防火墙)
-A INPUT -m state –state NEW -m tcp -p tcp –dport 21 -j ACCEPT(允许21端口通过防火墙)
添加好之后防火墙规则如下所示:
######################################
# Firewall configuration written by system-config-firewall
# Manual customization of this file is not recommended.
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
-A INPUT -m state –state ESTABLISHED,RELATED -j ACCEPT
-A INPUT -p icmp -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -m state –state NEW -m tcp -p tcp –dport 22 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 80 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 3306 -j ACCEPT
-A INPUT -j REJECT –reject-with icmp-host-prohibited
-A FORWARD -j REJECT –reject-with icmp-host-prohibited
COMMIT
#####################################
/etc/init.d/iptables restart #最后重启防火墙使配置生效
2、关闭SELINUX
vi /etc/selinux/config
#####################################
#SELINUX=enforcing #注释掉
#SELINUXTYPE=targeted #注释掉
SELINUX=disabled #增加
:wq #保存,关闭
#####################################
shutdown -r now #重启系统
格式
-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
-A INPUT -p icmp -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -p tcp -m state --state NEW -m tcp --dport 22 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 80 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 3306 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 21 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 443 -j ACCEPT
-A INPUT -j REJECT --reject-with icmp-host-prohibited
-A FORWARD -j REJECT --reject-with icmp-host-prohibited
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