HTTP Proxy

An HTTP proxy operates at the application layer and understands HTTP, so it can read, cache and filter web requests. A browser or tool sends its request to the proxy, which forwards it to the target site and returns the response. Because it speaks HTTP natively, it can add or strip headers — which is what determines its anonymity level. For encrypted sites it switches to a blind tunnel using the CONNECT method, relaying the TLS session without decrypting it.

For plain HTTP the proxy sees the full request and can modify headers such as X-Forwarded-For. For HTTPS it issues CONNECT, opens a tunnel to the destination and passes encrypted bytes through untouched, so it cannot read the contents. The site sees the proxy's exit IP. Unlike a SOCKS5 proxy it is limited to web traffic, but for scraping and browsing that is usually all you need.

Authenticated SOCKS5 (1080) and HTTP (3128) use the configured endpoint. Proxy credentials remain required when you choose another available exit. s4m has selectable public exit configurations. Use the endpoint or profile issued for the protocol and location selected in your account. An exit IP can have a prior history. Accounts, cookies and browser signals may still identify a user; changing an address does not guarantee a clean reputation. Documented default endpoint example: proxy.s4m.online:3128. Related topics: SOCKS5, dedicated IP, free proxy list, proxy plans.