What is a Proxy Server?

What is a Proxy Server?

• A. Located between a client's application and a real server
• B. An intrusion detection system
• C. Anonymizes traffic automatically
• D. A firewall

Answer: (A)

A proxy server sits between a client's application and the target server, acting as an intermediary for requests and responses. When you access a resource, your client's request goes to the proxy first, the proxy forwards it to the real server, and the server’s response travels back through the proxy to you. This placement is the defining feature of a proxy, enabling benefits like caching, access control, and content filtering. It’s not an intrusion detection system, which watches traffic for malicious activity, nor is it inherently an anonymizer (that depends on configuration), and it isn’t a firewall, though it can perform firewall-like filtering as part of a broader security setup. Therefore, the description that matches a proxy server is that it is located between a client’s application and a real server.

A proxy server sits between a client's application and the target server, acting as an intermediary for requests and responses. When you access a resource, your client's request goes to the proxy first, the proxy forwards it to the real server, and the server’s response travels back through the proxy to you. This placement is the defining feature of a proxy, enabling benefits like caching, access control, and content filtering. It’s not an intrusion detection system, which watches traffic for malicious activity, nor is it inherently an anonymizer (that depends on configuration), and it isn’t a firewall, though it can perform firewall-like filtering as part of a broader security setup. Therefore, the description that matches a proxy server is that it is located between a client’s application and a real server.