8 min
cPHulk vs CSF/LFD on cPanel — which to run and how they coexist
cPHulk and CSF/LFD overlap on brute-force protection but solve different problems. Here's what each catches, where they fight, and the config to run both cleanly.
2026-05-26
7 min
CSF country blocking with CC_DENY and CC_ALLOW on cPanel
CC_DENY drops entire countries at the firewall — done right with ipset it costs almost nothing per packet, done wrong it bloats iptables and adds 20ms to every connection.
2026-05-23
9 min
R1Soft port reference and firewall rules for SBM and agents
Every port R1Soft Server Backup Manager and its agents need, the direction each connection runs, and copy-paste firewall rules for firewalld, CSF, UFW, and AWS security groups.
2026-05-18
8 min
Install ConfigServer CSF on cPanel and tune the defaults
Install ConfigServer Security & Firewall on cPanel/WHM in under 10 minutes — including the csf.conf defaults every host should change before leaving TESTING mode.
2026-05-18
5 min
Run Imunify360 alongside CSF without double-blocking
Disable LF_MODSEC in CSF, keep SecRuleEngine in DetectionOnly where appropriate, and let Imunify360 own brute-force and WAF blocks.
2026-05-16