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TOP > VPDisk > 運用応用例 > シスログ(syslog)上書き削除禁止設定手順

※VPDiskの販売は2014年2月末をもって終了し、現在はサポートのみ行っております。導入をご検討のお客様は後継商品のFileProtectorをご参照ください。

シスログ(syslog)上書き削除禁止設定手順

syslogに対し、上書き削除禁止設定を行います。
syslogデーモンと、ログスイッチのプログラムに暗号鍵を使えるよう設定することでsyslogの透過的な更新が行えるようになります。

1.syslogデーモンの停止

# /etc/init.d/syslog stop

2.rootユーザで、対象のsyslogに上書き削除禁止設定

# vpd start -f <キーボックスのパス/キーボックス名>
# vpd lock /var/log/<暗号化対象syslog>
# vpd lock -t hard /var/log ← syslogのディレクトリを上書き削除禁止(firm属性)でロック

3.syslogデーモンが、暗号鍵付きでスタートできるように設定

# vpd delegate /sbin/syslogd <キーボックスのパス/キーボックス名>
# vpd delegate /usr/sbin/logrotate <キーボックスのパス/キーボックス名> ← ログスイッチのプログラム
(# vpd delegate /sbin/minilogd <キーボックスのパス/キーボックス名> ← minilogd経由でsyslogを書くものがある場合は、これも暗号鍵を使えるようにします)

4.syslogデーモンの起動

# /etc/init.d/syslog start

※SELinuxを有効にしている場合

SELinuxを有効にしていると、暗号化した際に、syslogのSELinuxアクセス権が読み取れなくなってしまいます。
SELinuxを無効にすか、syslogに対するSELinuxの保護を解除してく下さい。

SELinuxを無効にする方法

/etc/selinux/config内の下記一行を変更し、システムを再起動します。
SELINUX=disabled

以上で、syslogの上書き削除禁止設定は完了です。