Security/Ban Control
From WHMCS Documentation
WHMCS allows you to ban IP addresses and email domains. You can also configure automatic bans for users who exceed the maximum number of failed login attempts.
- You can view and manage the list of banned IP addresses at Configuration () > System Settings > Banned IPs or, prior to WHMCS 8.0, Setup > Banned IPs.
- You can alter the length of automatic IP address bans in the Security tab at Configuration () > System Settings > General Settings or, prior to WHMCS 8.0, Setup > General Settings.
- You can view and manage the list of banned email domains at Configuration () > System Settings > Banned Emails or, prior to WHMCS 8.0, Setup > Banned Emails.