Secure a Linux Server with SSH Keys, UFW and Automatic Updates
Harden a beginner Linux server in the safe order: add an SSH key, verify a second session, allow SSH in UFW, open web ports and enable security updates.
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2 articles
First Hour on a New Ubuntu or Debian Server
Turn a blank Ubuntu or Debian instance into a predictable host by checking resources, updating packages, setting time, creating an administrator and documenting the result.