If the answer is "Yes", then it may have happened as a result of Mod Security.
What is Mod Security?
ModSecurity is a module which protects your website from various types of attacks. Mod Security protects our website from hackers, attacks, a brute force attack, a cross-site request forgery(CSRF) and many other threats. Although it sometimes creates a problem, we do not recommend you to disable it but instead fix your software vulnerability. The reason for this is that ModSecurity only blocks your website if your software security is bad.
Disabling ModSecurity can help you determine whether your IP or your client/visitor"s IP is blocked by ModSecurity. If it isn"t the case, however, it means that your IP is blocked for a different reason. However, if you are sure that ModSecurity is the reason your IP is blocked, then contact us and we will find the exact reason behind it, in order to resolve your issue so that you will not be required to disable the module.
How to Enable or Disable Mod Security in cpanel?
1. Log into your cpanel account.
2. In the "Security" section,. "ModSecurity" Icon.
3. If ModSecurity is enabled, it will show a "Disable" option, click it and ModSecurity will be disabled on all your domains. Next time, if you want to enable it, you will only need to click on "Enable". This will enable it on all domains.
How to Disable ModSecurity Only on Selected Domains and not on All Domains?
It is possible that you have multiple domains and .disable or enable ModSecurity only on selected domains.
1. Login to cpanel and from the "Security" section. "ModSecurity" Icon.
2. Scroll down to the bottom of the page.
3. Under the "Status" option next to the domain, click on "On" or "Off".