ADMIN - Explore the new world of system administration! Special introductory offer! Order by September 30th to save 10% off the regular subscription price! Each issue delivers technical solutions to the real-world problems you face every day. Learn the latest techniques for better:
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Internet intruders have many ingenious ways of escalating privileges and hiding their presence once they get inside your system. The best protection is to keep them out in the cold.
Services that require a username and password for login are potential targets for dictionary attacks. Sshutout and Fail2ban introduce time penalties for invalid attempts.
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