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Comment on CrowdSec vs Fail2Ban - What to use?

I’ve been thinking about going this route. What size subnet are you blocking? /24?

Only thing stopping me is I selfhost email and don’t want to ban say a whole subnet from Microsoft/Azure and end up blocking the outgoing servers for O365. I’m sure I can dig around and look at the prefixes to see which are used for which of their services just haven’t had the time yet.

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mbirth@lemmy.ml ⁨3⁩ ⁨weeks⁩ ago
I let CrowdSec determine that. I’m seeing /13, /12 and even /10 in my decisions list. All seem to be Amazon AWS ranges.

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- sudneo@lemm.ee ⁨3⁩ ⁨weeks⁩ ago
  Wow, those are big networks. Obviously I suppose in case of AWS it doesn’t matter as no human visitor (except maybe some VPN connection?) will visit from there.
  
  As someone who bans /32 IPs only, is the main advantage resource consumption?
  
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