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Securing Your Asterisk Server, Part 2 - page 2

Locking Down OpenSSH

  • July 26, 2006
  • By Carla Schroder

A second way to tighten up remote SSH access is to use public-key authentication. This protects your system passwords because you authenticate with a cryptographic key, instead of using a login/password. (See Resources to learn how to do this.) In addition to disabling root logins, you should also disable password authentication with this line in /etc/ssh/sshd_config:

PasswordAuthentication no

Now you can sit back and laugh at brute-force SSH attacks, because they simply won't work.

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