There are many servers with static IP addresses around the globe and they spam WordPress sites with comments to get backlinks. Once you detect any spam comment, you can blacklist that IP and it will not be able to see your website content.
Limit Login Attempts
You can set login attempts limit for anyone which includes time frame of that limit. If anyone reaches that limit, plugin will block IP address itself and send you email with details about attempts. You can delete such IP addresses later on after resolving the issue.
Stops Brute Force Attacks
Without this plugin, you will not be able to detect who is trying to login admin panel with brute force attacks. You can stop them by blacklisting IP addresses and you can add "usernames" to Auto Block option.
Manage Multiple Websites
With IPBLC Server, you can manage multiple websites from one place. Synchronize IP addresses, details about failed login attempts, recommended blacklist IP addresses and much more.
Weekly IP Blacklist Chart
This chart shows number of IP addresses blacklisted in last week using this plugin.
Latest Blacklisted IP