A penetration tester is examining a company's network mapping obtained from a recent scan. The scan reveals multiple subnets with hosts that have both Inter-Subnet and Intra-Subnet communication patterns. Considering the layers of the OSI model, what type of network device is MOST likely responsible for allowing or restricting the communication BETWEEN these subnets?
A router primarily operates at layer 3 (the Network layer) of the OSI model and is designed to connect multiple subnets and direct data packets between them. Routers use IP addresses to make forwarding decisions and can allow or restrict traffic between subnets. In contrast, switches typically operate at layer 2 (Data Link layer) and handle traffic within the same subnet. Hubs, being even more limited, operate at layer 1 (Physical layer) and merely replicate traffic to all ports. Firewalls, though they can restrict traffic between subnets, are not inherently responsible for allowing communication at the network layer but rather for securing the network by applying policies.
Ask Bash
Bash is our AI bot, trained to help you pass your exam. AI Generated Content may display inaccurate information, always double-check anything important.
What does it mean for a router to operate at layer 3 of the OSI model?
Open an interactive chat with Bash
How do routers and switches differ in their communication capabilities?
Open an interactive chat with Bash
What role do firewalls play in network communication?