Knowing what a proxy is and getting one to work are two different problems. This section is the practical half: configuring a proxy in Chrome, Firefox, Windows and macOS, wiring one into Python, Playwright or Selenium, running one inside Docker, routing traffic per application on Android and iOS, and handling the failures that only appear in production — timeouts, silent authentication errors, addresses that die halfway through a session. Working examples, including the mistakes that cost us time.
How to give a browser automation session a proxy, including authenticated proxies that Chrome will not take from a URL, in Playwright (per context), Puppeteer (page.authenticate) a…
Working proxy configuration for requests, httpx and aiohttp with the current parameter names (httpx uses proxy=, not proxies=), SOCKS5 with remote DNS, rotation via a session-ID us…
HTTP/2 tunnels through any proxy because it rides on TCP inside CONNECT; HTTP/3 runs on QUIC over UDP, which HTTP proxies cannot carry and most SOCKS5 proxies do not forward. What …
Enterprise anti-bot products score every request across four layers — IP reputation, network fingerprints, browser fingerprint, and behaviour — then challenge, throttle or block. W…
TLS fingerprinting identifies the software behind an HTTPS connection from the handshake itself, before any request is sent. JA3 and JA4 hash it into a signature. Why Python script…
Why Google, Yandex, and Cloudflare show CAPTCHAs more often when you use a proxy: shared IPs with someone else's history, IP type, request rate, conflicting signals, and cookie res…
An antidetect browser gives each profile its own consistent, realistic fingerprint and storage, so several accounts on one machine look like unrelated people. It controls the brows…
Configuring a proxy takes a host, a port and usually a login. Exact steps for Firefox, Chrome, Windows 11 and macOS, the difference between system-wide and per-app proxies, authent…
Before trusting a proxy, verify five things: the IP actually changed, it is not flagged, DNS and WebRTC are not leaking your real address, speed is acceptable, and geolocation matc…
Proxies, VPNs and Tor all replace your visible IP but differ in scope, encryption, speed and who can see your traffic. A proxy is per-app with many IPs; a VPN tunnels all device tr…
IP rotation changes the proxy's outgoing address per request, on a timer, or on demand so no single IP gets throttled or banned. Rotating vs sticky sessions, how backconnect gatewa…
A proxy server is an intermediary that forwards your requests to websites and returns the responses, so the site sees the proxy's IP address instead of yours. This guide explains w…