Compare
Bastion Security is not a jail editor.
Fail2Ban reacts to local logs. Bastion brings CrowdSec decisions and Plesk-safe exceptions into a support workflow.
Fit
Use Fail2Ban for plumbing. Use Bastion for Plesk operations.
Bastion is the Plesk control plane
Operators see the source IP, scenario, decision and expiry without leaving the panel.
CrowdSec changes the signal quality
Community decisions help block sources before every hosted domain pays the first-hit cost.
Fail2Ban still has a place
Keep it for service-specific jails Bastion does not manage. Do not use it as the Plesk support UI.
Operational compare
The difference is where the decision lives.
Install path
Plesk Marketplace
Package + service config
Signal source
CrowdSec LAPI + CTI
Local log regex
Exception scope
Source + domain + reason
Server-level by default
Support review
Panel event row
SSH and log files