WAF stands for Web Application Firewall, it is a real-time protection installed on the server to secure sites from various attacks.
WAF is required to protect users' sites from security breach, which may lead to other issues such as site downtime, data theft and loss, and more.
WAF comes with a set of threats definitions to protect websites from incoming attacks, including SQL injections, cross-site scripting, malicious file executions and more.
If it hits a specific rule on WAF, the attacker's access will be denied and the IP address will be blocked on the server after several attempts.
This is to avoid further damage being done onto the website and the web server.
The threats definitions is constantly updated over time to ensure that the server and websites are protected from latest security vulnerabilities.
Sometimes some of the definitions can be classified as false positive, hence blocks legit users from accessing the site.
For similar case, you may contact our support team for further clarification.
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