Fedora 43

Clamav アンチウィルス インストール2025/11/05

 

コンピューター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。
[root@dlp ~]#
dnf -y install clamav clamav-freshclam
[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 Wed Nov  5 14:06:28 2025
daily database available for download (remote version: 27813)
Time:    5.2s, ETA:    0.0s [========================>]   61.74MiB/61.74MiB
Testing database: '/var/lib/clamav/tmp.2fab38c198/clamav-6aa297314b2affe7d5138b8a9dc1e000.tmp-daily.cvd' ...
Database test passed.
daily.cvd updated (version: 27813, sigs: 2076981, f-level: 90, builder: svc.clamav-publisher)
main database available for download (remote version: 62)
Time:   11.2s, ETA:    0.0s [========================>]  162.58MiB/162.58MiB
Testing database: '/var/lib/clamav/tmp.2fab38c198/clamav-3167fe3a6ac42b2d66ca0bd90ca94560.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: 339)
Time:    0.1s, ETA:    0.0s [========================>]  275.10KiB/275.10KiB
Testing database: '/var/lib/clamav/tmp.2fab38c198/clamav-fa491f6bbaecffd64094bfc2adf67ac8.tmp-bytecode.cvd' ...
Database test passed.
bytecode.cvd updated (version: 339, sigs: 80, f-level: 90, builder: nrandolp)
[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: 8708680
Engine version: 1.4.3
Scanned directories: 2
Scanned files: 3
Infected files: 0
Data scanned: 0.00 MB
Data read: 0.00 MB (ratio 0.00:1)
Time: 12.670 sec (0 m 12 s)
Start Date: 2025:11:05 14:07:52
End Date:   2025:11:05 14:08:04

# トライアル無害ウィルスをダウンロード

[root@dlp ~]#
wget https://files.trendmicro.com/products/eicar-file/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: 8708680
Engine version: 1.4.3
Scanned directories: 5
Scanned files: 8
Infected files: 1
Data scanned: 0.00 MB
Data read: 0.00 MB (ratio 0.00:1)
Time: 12.691 sec (0 m 12 s)
Start Date: 2025:11:05 14:08:33
End Date:   2025:11:05 14:08:46
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