SEO summary for “What is a Proxy Server? | Networking Fundamentals Explained”. A proxy server is a device or software placed between clients and destination resources that forwards requests on the user’s behalf and returns responses. This guide clarifies forward vs. reverse proxies: forward proxies handle outbound client traffic (privacy, access control, caching, basic content filtering), while reverse proxies sit at the application edge to receive inbound traffic, hide backend services, enforce Web Application Firewall (WAF) rules, terminate TLS, and distribute load. Practical setup is demonstrated across Firefox (search “proxy” in settings, specify host/port, apply to HTTPS), browser add-ons like FoxyProxy for fast profile switching, and system-wide configuration on Windows (Network & Internet → Proxy) and Linux (Network Proxy → Manual). For diagnostic and security testing, Burp Suite shows HTTP history and enables request interception/editing. Key operational tips include choosing the correct proxy type (HTTP/HTTPS vs. SOCKS5), common ports (8080/3128 for HTTP(S), 1080 for SOCKS5), authentication, exception lists/bypass domains, certificate considerations for HTTPS interception, and strict compliance with laws, site ToS, and organizational policies when routing traffic through proxies.
