By default SonicPanel protects login and API connections from brute force attacks. The login failure limit is 5 times in 1 hour. More than 5 login failures will result IP ban for 1 hour.
How to remove banned ips ?
If you need to release banned IPs before 1 hour period, remove the file rm -f /usr/local/sonicpanel/blocked manually from the root SSH.
How to disable/enable brute force protection service ?
Login to SonicPanel Root, use Service Manager from the left menu and disable or enable brute force protection.
We highly recommend you to keep this service enabled all the time, disabling this service creates a great security issue.