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Today I Learned: collection of notes, tips and tricks and stuff I learn from day to day working with computers and technology as an open source contributor and product manager

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Hardening on SSH server

  1. Use public key authentication over passwords: PasswordAuthentication no
  2. Disable login attempts with empty passwords: PermitEmptyPasswords no
  3. Disable root login: PermitRootLogin no
  4. Disable SSHv1 and use SSHv2: Protocol 2
  5. Disable X11 Forwarding: X11Forwarding no

Resources and References