Proxy

Understanding Proxy Servers

Understanding Proxy Servers

A proxy server acts as an intermediary between a client and a destination server, handling requests and responses to improve security, performance, or privacy.

How a Proxy Functions

1. Client Request: The client sends a request to the proxy instead of the destination server.
2. Proxy Server: Intercepts, inspects, and forwards the request to the destination.
3. Destination Server: Processes the request and sends a response.
4. Proxy Response: The proxy may modify, cache, or simply forward the response back to the client.

Types of Proxies

Forward Proxy: Used by clients to access external resources.
Reverse Proxy: Used by servers to manage incoming traffic.
Transparent Proxy: Passes requests/responses unchanged but may log or filter them.

Key Functions

  • Security: Hides client IPs and prevents tracking.
  • Caching: Stores frequently accessed content for faster delivery.
  • Load Balancing: Distributes traffic to multiple backend servers.
  • Access Control: Blocks or filters traffic based on rules.

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