what is firewall in a network diagram, what is OSI networks,

Question

Accepted Answer

Firewall is a security system that monitors and controls incoming and outgoing network traffic. OSI is a model for network communication.

Firewall is a hardware or software-based security system that filters network traffic based on predefined rules.
It acts as a barrier between a trusted internal network and an untrusted external network.
OSI (Open Systems Interconnection) is a model for network communication that defines a seven-layered approach to data transmission.
Each layer has a specific function and communicates with the adjacent layers to ensure data is transmitted accurately and efficiently.
Examples of OSI layers include the physical layer, data link layer, network layer, transport layer, session layer, presentation layer, and application layer.

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