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Guides, how-tos and deep dives on VPN, proxies, dedicated IPs and staying private online.
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How to Set Up a WireGuard VPN on Windows
Learn how to set up a WireGuard VPN on Windows with install, import, and troubleshooting steps for a quick secure connection.
Read →Static residential IP vs dedicated datacenter IP
Compare static residential IP vs dedicated datacenter IP for speed, trust, stability, privacy, and cost in scraping and automation.
Read →WireGuard vs OpenVPN for Privacy
Compare wireguard vs openvpn for privacy: learn how each protocol affects metadata, auditability, leak risk, and trust assumptions.
Read →How to Hide Your IP Address for Web Scraping
Learn how to hide your IP address for web scraping with proxies, VPNs, and proxy types to improve access, stability, and separation.
Read →How to hide your real server IP address
Your origin IP is the one address your CDN and firewall cannot hide for you. This guide shows how to route your server's outbound traffic through an exit so third parties only ever record the exit IP, never your real one.
Read →What is a SOCKS5 proxy?
SOCKS5 is the flexible workhorse of proxies — protocol-agnostic, TCP and UDP capable, and authenticated. Here's how it works and how to point an app at an s4m endpoint.
Read →How to set up WireGuard VPN, step by step
WireGuard is a fast, modern VPN protocol, and s4m hands you a ready-made config so you can connect in a few minutes. This guide walks you through setup on every major platform and shows how to confirm your origin IP is actually hidden.
Read →How to use proxies for web scraping
Proxies keep your scraper's origin server hidden and spread requests across IPs so a single address doesn't get rate-limited or blocked. This guide covers choosing proxies and wiring them into Python, Scrapy, and Playwright.
Read →How to check if a proxy is anonymous
Not every proxy hides your IP — some quietly forward it in HTTP headers. Before you trust a proxy with anything sensitive, test it. Here is exactly how, and what the anonymity levels actually mean.
Read →How to Use a Proxy with curl
curl has proxy support built in: a couple of flags route any request through an HTTP or SOCKS5 endpoint. This guide gives copy-paste commands against your s4m proxy, covering authentication, HTTPS, environment variables, and how to confirm your exit IP.
Read →How to change your IP address
Your public IP is the address every website you visit can see. Here are the reliable ways to change it — with a VPN, a proxy, or a quick local reset — and how to confirm the change actually worked.
Read →How to Bypass Geo-Blocking with a VPN or Proxy
Sites decide what you can see from your IP's apparent country. Here is why geo-blocking happens and how routing through a different-country exit changes what you can reach — honestly, and within the rules.
Read →How to Test for DNS Leaks
A DNS leak can expose every domain you visit even when your traffic is encrypted. Here is what a leak is, how to test for one, and how to keep name resolution inside the tunnel.
Read →How to Set Up a Proxy in Chrome and Firefox
A browser proxy routes just that browser's traffic through a remote server, hiding your origin IP for web requests. Here is how to point Chrome and Firefox at an authenticated SOCKS5 or HTTP proxy and confirm it actually works.
Read →What Is an IP Address?
Your IP address is how the internet routes traffic to you, and how websites recognize where a request came from. Here is what an IP reveals, and how a VPN or proxy changes what others see.
Read →How to use proxies with Python Requests
Configure Requests proxy routing, remote DNS and TLS separately. Check the issued endpoint, handle failures without exposing credentials, and verify the exit actually used.
Read →Rotating vs sticky proxy sessions
Rotating and sticky sessions are two ways to control which IP your requests leave from. Choosing the right one keeps crawlers fast and stops multi-step logins from breaking.
Read →How to Avoid IP Bans When Scraping
IP bans usually come from behavior, not bad luck — too many requests, sloppy headers, and a fingerprint that screams "bot." Here's how to scrape within the rules and keep your requests flowing.
Read →Using HTTP_PROXY / HTTPS_PROXY environment variables
The HTTP_PROXY, HTTPS_PROXY and NO_PROXY environment variables are the fastest way to send a program's outbound traffic through a proxy. Here is how they behave across curl, wget, Python, Node.js and Docker — and where they quietly don't.
Read →What Is a Reverse Proxy? How It Works and Why Sites Use One
A reverse proxy accepts requests on behalf of one or more web servers and passes them to the right backend. Here is what it does for a site — and how it differs from the forward proxies s4m sells.
Read →Proxy authentication: user/pass vs IP whitelist
The current s4m service does not offer IP-only authentication or a combined client-IP allowlist mode. A destination IP allowlist is separate from s4m proxy authentication. It does not enable password-free access to the current s4m proxy service.
Read →VPN kill switch — block leaks if the tunnel drops
VPN kill switch setup and checks for Linux, macOS and Windows: client settings, firewall limits, DNS, IPv6 and failure testing.
Read →Anti-Detect Browsers and Proxies: How They Fit Together
Anti-detect browsers give every profile its own fingerprint, but a fingerprint alone is not enough — each identity also needs its own exit IP. This guide explains how Dolphin, AdsPower, Octo and similar tools attach a proxy to a profile, and where authenticated datacenter proxies do (and do not) fit.
Read →Browser Fingerprinting: Canvas, WebGL and Fonts Explained
A browser fingerprint is a profile a website builds from dozens of properties your browser exposes — no cookies required. This guide explains the main signals (canvas, WebGL, fonts, and more), how uniqueness is measured, and why hiding your IP is only half the story.
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