I’m running Hestia CP on 2 vservers (Debian 10) since a few weeks. Both have the same problem (but on different times):
After a few hours (sometime days) the severs won’t let me connect via FTP. At the beginning I did a full restart and I can connect again, but now I found out that only fail2ban needs to get restartet.
I’m not blacklisted (a restart didn’t clear the blacklist) and the problem also apears if I try to connect from the server itself (FTP-Connection with PHP script to localhost).
Any solution ideas? (I don’t want do deactivate fail2ban)