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Tagged with csf
- 14 min readoperationssecurityinfrastructure
Locked out of cPanel SSH: VNC, iptables, and the way back in
How to recover from a cPanel SSH lockout using your provider's VNC console, iptables flush, and CSF restore, plus the audit that prevents the next one.
- 14 min readwordpresssecurityinfrastructure
xmlrpc.php abuse and the 27-site one-shot fix on cPanel
A postmortem on 5,400 xmlrpc.php requests an hour from one /24, why per-site plugin fixes fail, and the shell loop that hardened 27 WordPress sites at once.
- 13 min readsecurityinfrastructure
SSH brute force on cPanel: the 8,127-attempt night and the fix
A postmortem on 8,127 failed SSH logins to a cPanel server in six hours from rotating /24s, why lfd alone could not see the pattern, and the layered fix.
- 14 min readsecurityinfrastructure
CSF, lfd, and Imunify360: why your firewall is killing itself
A 2026 postmortem on cPanel servers running CSF and Imunify360 in parallel: lfd OOM kills, csf.deny bloat, iptables races, and the fix we ship.