ConfigServer Security & Firewall
CSF Login Failure Daemon (LFD) blocks
It's possible you or your customers get blocked by the security mechanisms of the ConfigServer Firewall. The LFD component could block too many failed login attempts to SSH, FTP, POP3, IMAP, HTTP, etc.
Unlike other applications, LFD is a daemon process that monitors logs continuously and so can react within seconds of detecting such attempts. It also monitors across protocols, so if attempts are made on different protocols in a short space of time, all those attempts will be counted against the threshold.
Unblocking an IP Address in CSF & Reason of blocking
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To determine whether an IP address is blocked, you can use the Search for IP button on the ConfigServer Security&Firewall page. Simply enter the IP address into the search field and click the button.
If the IP address is blocked, the reason for the block will be listed and an unlocked padlock icon will appear to the right of the blocked IP address. Clicking the padlock icon will unblock the IP in the firewall.
