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ÔÚµ±½ñÊý×Öʱ´ú£¬Ð§ÀÍÆ÷Çå¾²ÐÔÊÇÈκÎÆóÒµ»òСÎÒ˽È˶¼ÐèÒª¹Ø×¢µÄÖ÷ÒªÎÊÌ⡣ͨ¹ýÔöǿЧÀÍÆ÷µÄÇå¾²ÐÔ£¬¿ÉÒÔ±ÜÃâ¶ñÒâ¹¥»÷ºÍÊý¾Ýй¶¡£LinuxЧÀÍÆ÷ÒòÆäÎȹÌÐԺͿɶ¨ÖÆÐÔ£¬±»ÆÕ±éÓÃÓÚÖÖÖÖÓ¦Óó¡¾°¡£ÔÚ±¾ÎÄÖУ¬ÎÒÃǽ«ÏÈÈÝһЩÏÂÁîÐй¤¾ß£¬¿ÉÒÔ×ÊÖúÔöÇ¿ÄãµÄLinuxЧÀÍÆ÷µÄÇå¾²ÐÔ¡£

Fail2Ban

Fail2Ban ÊÇÒ»¿îÓÃÓÚ¼à¿Ø²¢ÏìӦЧÀÍÆ÷ÉϵĶñÒâÐÐΪµÄ¹¤¾ß¡£Ëü¿ÉÒÔ¼ì²âµ½ÖîÈ籩Á¦ÆƽâµÇ¼¡¢DDoS ¹¥»÷µÈÐÐΪ£¬²¢Æ¾Ö¤ÉèÖõĹæÔò×Ô¶¯·â±Õ¹¥»÷Ô´¡£ÒÔÏÂÊÇ×°ÖúÍÉèÖà Fail2Ban µÄʾÀý£º

# ×°ÖÃ Fail2Ban
sudo apt-get update
sudo apt-get install fail2ban
# ÉèÖÃ Fail2Ban
sudo cp /etc/fail2ban/jail.conf /etc/fail2ban/jail.local
sudo vi /etc/fail2ban/jail.local
# ÐÞ¸ÄÉèÖÃÎļþ£¬ÉèÖÃÐèÒª¼à¿ØºÍ·â±ÕµÄÐÐΪ¹æÔò
[sshd]
enabled = true
port = ssh
filter = sshd
logpath = /var/log/auth.log
maxretry = 3
bantime = 3600
# ÖØÆô Fail2Ban ЧÀÍ
sudo systemctl restart fail2ban

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ClamAV

ClamAV ÊÇÒ»¿î¿ªÔ´µÄ·´²¡¶¾Èí¼þ£¬¿ÉÒÔÓÃÓÚ¼ì²âºÍɾ³ý¶ñÒâÈí¼þ¡¢²¡¶¾µÈ¡£ÒÔÏÂÊÇ×°ÖúÍʹÓà ClamAV µÄʾÀý£º

# ×°ÖÃ ClamAV
sudo apt-get update
sudo apt-get install clamav
# ¸üв¡¶¾Êý¾Ý¿â
sudo freshclam
# ɨÃèÖ¸¶¨Ä¿Â¼
sudo clamscan -r /path/to/directory
# »òɨÃèͨÅÌ
sudo clamscan -r /
# ɾ³ý·¢Ã÷µÄ¶ñÒâÎļþ
sudo clamscan -r --remove /path/to/directory

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Lynis

Lynis ÊÇÒ»¿îÓÃÓÚÆÀ¹ÀºÍÌá¸ß Linux ϵͳÇå¾²ÐԵŤ¾ß¡£Ëü¿ÉÒÔ¼ì²âºÍÐÞ¸´Ç±ÔÚµÄÇå¾²Îó²î¡¢ÉèÖùýʧµÈ¡£ÒÔÏÂÊÇ×°ÖúÍʹÓà Lynis µÄʾÀý£º

# ×°ÖÃ Lynis
sudo apt-get update
sudo apt-get install lynis
# ÔËÐÐ Lynis
sudo lynis audit system

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OpenVAS

OpenVAS ÊÇÒ»¿î¿ªÔ´µÄÎó²îÆÀ¹À¹¤¾ß£¬ÓÃÓÚɨÃèЧÀÍÆ÷ÉϵÄÎó²îºÍÇå¾²Èõµã¡£ÒÔÏÂÊÇ×°ÖúÍʹÓà OpenVAS µÄʾÀý£º

# ×°ÖÃ OpenVAS
sudo apt install openvas
# ÉèÖúͳõʼ»¯ OpenVAS
sudo greenbone-nvt-sync
sudo greenbone-scapdata-sync
sudo greenbone-certdata-sync
sudo openvasmd --create-user=admin
sudo openvasmd --user=admin --new-password=myadminpassword
sudo openvas-manage-certs -a
sudo openvasmd --rebuild
# Æô¶¯ OpenVAS ЧÀÍ
sudo openvas-start
# »á¼û OpenVAS Web ½çÃæ
http://localhost:9392

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SSH Çå¾²ÉèÖÃ

SSH ÊÇÔ¶³ÌµÇ¼ Linux ЧÀÍÆ÷µÄ³£ÓÃЭÒ顣ΪÁËÌá¸ßЧÀÍÆ÷µÄÇå¾²ÐÔ£¬ÎÒÃÇ¿ÉÒÔ½ÓÄÉÒÔϲ½·¥£º

եȡ root Óû§Ö±½ÓÔ¶³ÌµÇ¼

ʹÓÃÃÜÔ¿µÇ¼Ìæ»»ÃÜÂëµÇ¼

ÏÞÖÆÔÊÐíµÇ¼µÄ IP µØµã¹æÄ£

ÐÞ¸Ä SSH ĬÈ϶˿Ú

Çë²Î¿¼ÒÔÏÂʾÀýÉèÖÃÎļþ /etc/ssh/sshd_config£º

PermitRootLogin no
PasswordAuthentication no
AllowUsers your_username
Port 2200

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Íê³ÉÒÔÉÏÉèÖúó£¬ÖØÆô SSH ЧÀÍ£º sudo systemctl restart sshd

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