Day 3: Secure SSH Root Access

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Objective

Disable all app server SSH root access.

Steps

1. Login into each app server (see Day 1)
2. Modify sshd_config and restart sshd service

   sudo sed -i 's/PermitRootLogin yes/PermitRootLogin no/g' /etc/ssh/sshd_config
   sudo systemctl restart sshd

Next: Day 4 →