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sshの設定とログ確認

Posted at

ポート変更

$ vi /etc/ssh/sshd_config

#Port 22
Port 10022

$ vi /etc/sysconfig/iptables
-A INPUT -m state --state NEW -m tcp -p tcp --dport 10022 -j ACCEPT

$ service sshd restart
$ service iptables restart

ssh接続を新しいターミナルウィンドウを複製して接続を確認する。その後ファイアウォールの22番を閉じてサービス再起動

$ vi /etc/sysconfig/iptables

#コメントアウト
#-A INPUT -m state --state NEW -m tcp -p tcp --dport 22  -j ACCEPT

$ service iptables restart

ログ確認 sshのログインに失敗/成功したユーザ数

# grep -c invalid /var/log/secure
# grep -c Failed /var/log/secure
# grep -c Accepted /var/log/secure
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