The essential points from this guide -- each one is explained in detail below.
Browser proxy settings route all browser traffic through the configured proxy.
Extensions like FoxyProxy or SwitchyOmega offer faster switching and per-site rules.
Chrome and Edge use the system proxy settings; Firefox has its own independent settings.
For programmatic scraping, use proxy configuration in your code instead of browser settings.
Chrome and Edge use your operating system's proxy settings. On Windows: Settings > Network & Internet > Proxy > Manual proxy setup. On macOS: System Preferences > Network > Advanced > Proxies. Enter the proxy address and port. Both browsers share these settings -- changing one changes the other.
For more control, install the SwitchyOmega extension. It lets you define multiple proxy profiles and switch between them with one click, without touching system settings.
Firefox maintains its own proxy settings, independent of the operating system. Navigate to Settings > General > Network Settings > Settings. Choose "Manual proxy configuration" and enter your proxy address, port, and authentication credentials. Firefox also supports SOCKS5 proxies and PAC (Proxy Auto-Configuration) scripts natively.
FoxyProxy is the most popular Firefox proxy extension, offering quick switching and URL-based proxy rules.
After configuring your proxy, verify it works by visiting an IP checker tool (like KnoxProxy's free IP checker at /tools/ip-checker). The displayed IP should be the proxy's IP, not your real one. Also check for WebRTC leaks, which can reveal your real IP even when using a proxy -- disable WebRTC in Firefox via about:config (media.peerconnection.enabled = false) or use an extension in Chrome.
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KnoxProxy Research Team · Technical Content
Network engineers and proxy infrastructure specialists with 10+ years in anti-bot systems, web scraping, and IP routing.
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