You can manage CSF from WHM » ConfigServer Security&Firewall.
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To check if any IP address has been blocked, enter the IP address at the text box next to "Search for IP" and click on it.
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To remove an IP address from deny file, enter the IP address at the text box next to "Remove Deny" and click on it.
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To allow an IP address, enter the IP address at the text box next to "Quick Allow" and click on it.
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To deny an IP address, enter the IP address at the text box next to "Quick Deny" and click on it.
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To modify the firewall configuration, click on "Firewall Configuration", make the required changes and click on "Change" to save the configuration. To change the connection tracking limit, look for "CT_LIMIT", change the value for limit and save the configuration file.
