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[CentOS] firewalldで特定のサービスを特定のIPアドレスに対して許可する

Posted at

firewalld?

CentOS7のfirewalldをまじめに使うはじめの一歩(systemdも少し)
が詳しいと思います。

やりたいこと

デフォルトのzone(public)のルールはそのままに、特定のサービス(今回はMySQL)を特定のIPアドレスに対してのみ許可したい

方法

カスタムのzoneを作成してあげることで実現します

MySQLを特定のIPに許可してあげる.sh
firewall-cmd --permanent --new-zone=mysql # --permanentオプション必須 zone名は任意
firewall-cmd --reload

firewall-cmd --permanent --zone=mysql --set-target=ACCEPT
firewall-cmd --permanent --zone=mysql --add-service=mysql
firewall-cmd --permanent --zone=mysql --add-source=192.168.0.0/24 # 許可するソース
firewall-cmd --reload

firewall-cmd --get-active-zones # 追加したzone(+ソース)が表示されればOK

--set-targetってのを設定するのに苦労しました

参考

http://www.firewalld.org/documentation/man-pages/firewall-cmd.html
http://serverfault.com/questions/684602/how-to-open-port-for-a-specific-ip-address-with-firewall-cmd-on-centos/684739#684739

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