In stateful inspection firewalls, packets are:

The correct answer is B. Inspected at all Open System Interconnection (OSI) layers. Stateful inspection (also called dynamic packet filtering) is an advanced firewall technology developed by Check Point. Unlike simple packet filtering firewalls that only examine packets at Layer 3 (Network) or Layer 4 (Transport), stateful inspection firewalls inspect packets…

Submitted by khalil_dz· Apr 18, 2026Network and Communications Security

Question

Options

AInspected at only one layer of the Open System Interconnection (OSI) model
BInspected at all Open System Interconnection (OSI) layers
CDecapsulated at all Open Systems Interconnect (OSI) layers.
DEncapsulated at all Open Systems Interconnect (OSI) layers.

How the community answered

(39 responses)

A
8% (3)
B
90% (35)
D
3% (1)

Explanation

Stateful inspection (also called dynamic packet filtering) is an advanced firewall technology developed by Check Point. Unlike simple packet filtering firewalls that only examine packets at Layer 3 (Network) or Layer 4 (Transport), stateful inspection firewalls inspect packets across all OSI layers - from Layer 2 (Data Link) up through Layer 7 (Application). They also maintain a 'state table' that tracks the context of active connections, allowing them to make more intelligent allow/deny decisions based on the full conversation state, not just individual packets in isolation. This multi-layer inspection is what differentiates stateful firewalls from basic packet filters.

Topics

#Firewalls#Stateful Inspection#OSI Model#Network Security Devices

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