Proxy fundamentals

Understand the differences between a proxy and a firewall. Learn how they function, and which is better for security and network control.

Compare ISP and datacenter proxies, including speed, cost, detection risk, and best use cases, to choose the right solution for your needs.

Compare IP whitelisting vs credentials, set up your dev tools, and learn how to fix 407 proxy authentication errors.

Find out how proxy chaining works, when to use it, and how it boosts privacy by layering proxy servers.

Learn the difference between forward and reverse proxies, how they work, and when to use each for privacy, security, and performance optimization.

Learn about the key differences between dedicated and shared IP to understand which can benefit your use case more.

Find out how proxies are used to train large language models (LLMs) such as ChatGPT and Claude. Start collecting data for your models today.

Unsure if you need a mobile proxy vs residential proxy? We break down the differences in speed, cost, and anonymity to help you pick the right tool.

Learn about HTTP header names and whether they need to be case sensitive for your requests to reach all websites and browsers properly while web scraping.

Learn what email scraping is, how it works, what automated tools to use, and the steps you should take to start scraping email addresses yourself.

This guide explains how web crawlers help search engines display accurate results and how websites ensure their content ranks well on them.

Learn all about cURL timeouts. Here’s how to set and debug timeouts to keep your requests, scripts, and automation reliable and efficient.