Culmen Content Filtering

Layered content filtering for subscriber networks, with per-plan policy rather than one blunt rule for everyone.

How it works

• Four independent layers — filtering at DNS, IP, protocol and application level, so bypassing one doesn't defeat the system
• Per-tier policy — different rules for family plans, business accounts and unrestricted tiers
• Encrypted-DNS handling — DoH and DoT endpoints closed off, so a browser setting can't silently route around your filter
• Allow-list overrides for sites a customer specifically requests
• Logging for compliance, with retention you control

Why layered

Single-layer DNS filtering is trivially bypassed — a customer changes one setting and the filter is gone, while your logs still show it working. Each layer here catches what the layer above it misses.

Perpetual licence. Configured to your plan structure and local regulatory requirements.