What is Lion Server Firewall

Lion Server Firewall (LSF) v3.2.0 is the host firewall on Lionhost WHM/cPanel servers (and standalone Linux).

It manages iptables and ip6tables (plus ipset when available), is dual-stack IPv4/IPv6, and includes LFD brute-force watching, PSAD port-scan detection, GeoIP, L3/L4 flood limits, ModSecurity escalation, and a WHM plugin with Simulator and Health check.

It is not a copy of CSF. Do not run LSF and CSF on the same server.

LSF Overview in WHM

  • lsf, overview
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