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ʹÓÃÏÂÁîÐй¤¾ßÌá¸ßÄãµÄLinuxЧÀÍÆ÷Çå¾²ÐÔ

×÷ΪһÃûÓµÓÐLinuxЧÀÍÆ÷µÄϵͳÖÎÀíÔ±£¬±£»¤Ð§ÀÍÆ÷µÄÇå¾²ÐÔÊÇÖÁ¹ØÖ÷ÒªµÄʹÃüÖ®Ò»¡£ÐÒÔ˵ÄÊÇ£¬LinuxÌṩÁËÐí¶àÇ¿Ê¢µÄÏÂÁîÐй¤¾ß£¬¿ÉÒÔ×ÊÖúÎÒÃÇÌá¸ßЧÀÍÆ÷µÄÇå¾²ÐÔ¡£±¾ÎĽ«ÏÈÈݼ¸¸ö³£ÓõÄÏÂÁîÐй¤¾ß£¬ÒÔ¼°ËüÃǵÄʹÓÃʾÀý¡£

SSH£¨Secure Shell£©

SSHÊÇÒ»ÖÖͨ¹ýÍøÂç¾ÙÐÐÇ徲ͨѶµÄЭÒ飬ÎÒÃÇ¿ÉÒÔʹÓÃSSH¹¤¾ßÅþÁ¬µ½Ô¶³ÌЧÀÍÆ÷²¢¾ÙÐвÙ×÷£¬×èÖ¹ÁËÃ÷ÎÄ´«ÊäµÄΣº¦¡£ÒÔÏÂÊÇSSHµÄʹÓÃʾÀý£º

# ÅþÁ¬µ½Ô¶³ÌЧÀÍÆ÷
ssh username@server_ip

# ¿½±´Îļþµ½Ô¶³ÌЧÀÍÆ÷
scp local_file username@server_ip:remote_path

# ´ÓÔ¶³ÌЧÀÍÆ÷¿½±´Îļþµ½ÍâµØ
scp username@server_ip:remote_file local_path

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GPG£¨GNU Privacy Guard£©

GPGÊÇÒ»¿îÓÃÓÚÎļþ¼ÓÃܺÍÊý×ÖÊðÃûµÄ¹¤¾ß¡£Í¨¹ýʹÓÃGPG£¬ÎÒÃÇ¿ÉÒÔΪÎļþÌí¼Ó¼ÓÃܱ£»¤£¬Ê¹ÆäÖ»Äܱ»Ìض¨µÄ˽Կ½âÃÜ¡£ÒÔÏÂÊÇGPGµÄʹÓÃʾÀý£º

# ÌìÉú¹«Ô¿ºÍ˽Կ
gpg --gen-key

# ¼ÓÃÜÎļþ
gpg -e -r recipient_file_name file_to_encrypt

# ½âÃÜÎļþ
gpg -d encrypted_file.gpg > decrypted_file

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Fail2ban

Fail2banÊÇÒ»¸öÓÃÓÚ·ÀÓù±©Á¦ÆƽâµÄ¹¤¾ß£¬Ëü¼à¿ØϵͳÈÕÖ¾£¬µ±¼ì²âµ½¶à´Îʧ°ÜµÄµÇ¼ʵÑéʱ£¬»á×Ô¶¯Õ¥È¡¹¥»÷ÕßµÄIPµØµã¡£ÒÔÏÂÊÇFail2banµÄʹÓÃʾÀý£º

# ×°ÖÃFail2ban
sudo apt-get install fail2ban

# ÉèÖÃFail2ban
sudo nano /etc/fail2ban/jail.conf

# Æô¶¯Fail2ban
sudo service fail2ban start

# Éó²éFail2banÈÕÖ¾
sudo tail -f /var/log/fail2ban.log

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UFW£¨Uncomplicated Firewall£©

UFWÊÇÒ»¸ö¼òÆÓÒ×ÓõķÀ»ðǽÉèÖù¤¾ß£¬¿ÉÒÔ×ÊÖúÎÒÃǹýÂËÁ÷Á¿²¢ÏÞÖÆÌض¨¶Ë¿ÚµÄ»á¼û¡£ÒÔÏÂÊÇUFWµÄʹÓÃʾÀý£º

# ÔÊÐíÌض¨¶Ë¿ÚµÄ»á¼û
sudo ufw allow port_number

# եȡÌض¨¶Ë¿ÚµÄ»á¼û
sudo ufw deny port_number

# ¿ªÆô·À»ðǽ
sudo ufw enable

# Éó²é·À»ðǽ״̬
sudo ufw status

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Lynis

LynisÊÇÒ»¸öÓÃÓÚϵͳÇå¾²Éó¼ÆµÄ¹¤¾ß£¬Ëüƾ֤Ŀ½ñϵͳÉèÖúÍÇå¾²ÎÊÌâÌṩÏêϸµÄÆÊÎö±¨¸æ¡£ÒÔÏÂÊÇLynisµÄʹÓÃʾÀý£º

# ×°ÖÃLynis
sudo apt-get install lynis

# ÔËÐÐLynis¾ÙÐÐϵͳÇå¾²Éó¼Æ
sudo lynis audit system

# Éó²éLynisÉó¼Æ±¨¸æ
sudo cat /var/log/lynis.log

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