this post was submitted on 10 Feb 2025
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    I didn't know you were supposed to disable root user... (linux.community)
    submitted 3 months ago by Tablaste@linux.community to c/linuxmemes@lemmy.world
    174 comments fedilink hide all child comments
     

    Background: 15 years of experience in software and apparently spoiled because it was already set up correctly.

    Been practicing doing my own servers, published a test site and 24 hours later, root was compromised.

    Rolled back to the backup before I made it public and now I have a security checklist.

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    [–] ramius345@sh.itjust.works 26 points 3 months ago* (last edited 3 months ago) (5 children)

    You should turn off ssh password logins on external facing servers at a minimum. Only use ssh keys, install fail2ban, disable ssh root logins, and make sure you have a firewall limiting ports to ssh and https.

    This will catch most scripted login attempts.

    If you want something more advanced, look into https://en.m.wikipedia.org/wiki/Security_Technical_Implementation_Guide and try to find an ansible playbook to apply them.

    [–] smiletolerantly@awful.systems 2 points 3 months ago

    Did all that, minus the no ssh root login (only key, obviously) plus one failed attempt, fail2ban permaban.

    Have not had any issues, ever

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