Limit OpenPanel

Both OpenPanel and OpenAdmin interfaces have a built-in rate limiting and IP address blocking to protect against brute-force attacks.

This feature is enabled by default on all installations, and can be additionally customized via OpenAdmin > Settings > OpenPanel or from the terminal.

You can configure the maximum number of failed login attempts allowed per IP (default is 5 per minute) and the total number of failed attempts (default is 20), after which the offending IP will be temporarily blocked by the firewall for one hour.

For OpenPanel limits are configurable in: /etc/openpanel/openpanel/conf/openpanel.config file:

[USERS]
login_ratelimit=5
login_blocklimit=20

user ratelimit

For OpenAdmin limits are configurable in: /etc/openpanel/openadmin/config/admin.ini file:

[PANEL]
login_ratelimit=5
login_blocklimit=20

admin ratelimit

If a user successfully logs in, the counter for login_blocklimit will reset.

Failed login attempts and blocked IP addresses are logged in the /var/log/openpanel/admin/failed_login.log file for OpenAdmin and in the /var/log/openpanel/user/failed_login.log file for OpenPanel.