Which of the following is use to protect a network from malicious attack and unwanted intrusion? Choose one.Choose one answer.Proxy ServerRouterFirewall

Breakdown the Problem

1. Identify the options given: Proxy Server, Router, Firewall.
2. Determine which option is primarily used for network protection.

Relevant Concepts

1. Proxy Server: Acts as an intermediary for requests from clients seeking resources from other servers, primarily for anonymity and content filtering.
2. Router: Directs data packets between networks, but does not inherently provide security measures.
3. Firewall: A network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules.

Analysis and Detail

1. A Firewall is specifically designed to establish a barrier between a trusted internal network and untrusted external networks, effectively protecting the network from malicious attacks and unwanted intrusions.
2. While a Proxy Server can provide some security features, its primary function is not to protect the network but to manage requests and enhance privacy.
3. A Router does not provide security features by itself; it focuses more on directing traffic rather than enforcing security policies.

Verify and Summarize

Upon reviewing the definitions and functions of the three options, it is clear that while each serves an important role in networking, the Firewall is dedicated specifically to safeguarding the network.

Final Answer

Firewall is used to protect a network from malicious attack and unwanted intrusion.