OmnıLearn
Firewall: architecture and deployment
Text· 8 minMembers-only lesson

What an OPNsense firewall does: stateful filtering and default deny

In the course lab, fw-opnsense sits between three networks: the WAN (203.0.113.0/24), the LAN (192.168.10.0/24), and the DMZ (192.168.20.0/24). Every packet that crosses one of these interfaces gets checked against a set of firewall rules before it is allowed through…

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