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Clamav アンチウィルス インストール
2022/03/11
 
ウィルスからシステムを保護する Clam AntiVirus をインストールします。
[1] Clamav をインストールします。
# EPEL からインストール

[root@dlp ~]#
dnf --enablerepo=epel -y install clamav clamav-update
[root@dlp ~]#
vi /etc/freshclam.conf
# 8行目 : コメントにする (もし有効行な場合)

#
Example
# 定義ファイル手動更新

[root@dlp ~]#
freshclam

ClamAV update process started at Fri Mar 11 02:18:10 2022
daily database available for download (remote version: 26477)
Time:    1.8s, ETA:    0.0s [========================>]   55.31MiB/55.31MiB
Testing database: '/var/lib/clamav/tmp.9a1ebd3fbe/clamav-20d5f85036153e8680fc7c7a96abcc1a.tmp-daily.cvd' ...
Database test passed.
daily.cvd updated (version: 26477, sigs: 1975702, f-level: 90, builder: raynman)
main database available for download (remote version: 62)
Time:   19.0s, ETA:    0.0s [========================>]  162.58MiB/162.58MiB
Testing database: '/var/lib/clamav/tmp.9a1ebd3fbe/clamav-7af2aea2bc48f071d921964027b62615.tmp-main.cvd' ...
Database test passed.
main.cvd updated (version: 62, sigs: 6647427, f-level: 90, builder: sigmgr)
bytecode database available for download (remote version: 333)
Time:    0.2s, ETA:    0.0s [========================>]  286.79KiB/286.79KiB
Testing database: '/var/lib/clamav/tmp.9a1ebd3fbe/clamav-8d6cfea8ff85b8ea3247613391bd78f1.tmp-bytecode.cvd' ...
Database test passed.
bytecode.cvd updated (version: 333, sigs: 92, f-level: 63, builder: awillia2)
[2] 動作確認としてスキャンを実行します。
# /home をスキャン

[root@dlp ~]#
clamscan --infected --remove --recursive /home
----------- SCAN SUMMARY -----------
Known viruses: 8607773
Engine version: 0.103.5
Scanned directories: 5
Scanned files: 6
Infected files: 0
Data scanned: 0.00 MB
Data read: 0.00 MB (ratio 0.00:1)
Time: 17.463 sec (0 m 17 s)
Start Date: 2022:03:11 02:19:29
End Date:   2022:03:11 02:19:47

# トライアル無害ウィルスをダウンロード

[root@dlp ~]#
wget https://www.eicar.org/download/eicar.com
[root@dlp ~]#
clamscan --infected --remove --recursive .

# お試しウィルスが検出され削除された

/root/eicar.com: Win.Test.EICAR_HDB-1 FOUND
/root/eicar.com: Removed.

----------- SCAN SUMMARY -----------
Known viruses: 8607773
Engine version: 0.103.5
Scanned directories: 1
Scanned files: 13
Infected files: 1
Data scanned: 0.03 MB
Data read: 0.02 MB (ratio 1.75:1)
Time: 17.433 sec (0 m 17 s)
Start Date: 2022:03:11 02:20:30
End Date:   2022:03:11 02:20:48
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