A forward proxy sits in front of clients and makes requests on their behalf, hiding who is really asking — this is the proxy type used for web scraping, privacy, and geo-targeting. A reverse proxy sits in front of servers and receives requests on their behalf, hiding the backend infrastructure — this is the proxy type used for load balancing, caching, and security. Same word, opposite ends of the connection. The simplest way to remember it: a forward proxy protects and represents the client; a reverse proxy protects and represents the server.
This guide explains both clearly, shows where each sits in the request path, compares them side by side, and helps you decide which one your project actually needs. If you are new to proxies generally, start with what is a proxy server.
A forward proxy is the classic, everyday meaning of "proxy." The client is configured to send its traffic to the proxy, and the proxy forwards each request to the destination on the internet. The destination server sees the proxy's IP address, not the client's.
The request path looks like this:
Client -> Forward Proxy -> Internet (target server)
Because the proxy stands between the client and the open internet, it controls what the destination sees. That is what makes forward proxies the tool for anonymity, geo-targeting, and web scraping — the target site sees a residential IP in the country you chose instead of your real address. The client opts in and is aware of the proxy; the destination usually is not. Residential, datacenter, ISP, and mobile proxies are all forward proxies.
A reverse proxy flips the arrangement. It sits in front of one or more servers and accepts incoming requests from the internet, then forwards them to whichever backend should handle each one. The client thinks it is talking to a single server; it is actually talking to the reverse proxy, which hides the real infrastructure behind it.
The request path looks like this:
Internet (clients) -> Reverse Proxy -> Backend servers
Here the client is unaware of the proxy — it just requests a website, and the reverse proxy quietly decides which backend serves it. Tools like NGINX, HAProxy, Cloudflare, and cloud load balancers act as reverse proxies. They handle load balancing, SSL/TLS termination, caching, compression, and act as a security buffer in front of the application.
| Aspect | Forward Proxy | Reverse Proxy |
|---|---|---|
| Acts on behalf of | The client | The server |
| Position | In front of clients, facing the internet | In front of servers, facing the internet |
| Who configures it | The client (knowingly) | The server owner |
| Who is hidden | The client's identity/IP | The backend servers |
| Who is aware of it | The client | The client is usually unaware |
| Primary uses | Scraping, privacy, geo-targeting, content filtering | Load balancing, caching, SSL termination, security |
| Examples | Residential, datacenter, ISP, mobile proxies | NGINX, HAProxy, Cloudflare, cloud load balancers |
For the full landscape of these, see what proxies are used for.
A reverse proxy and a load balancer overlap heavily; the distinction is covered in reverse proxy vs load balancer.
The answer falls out of one question: are you the client or the server?
They are not competitors; many systems use both. A scraper uses a forward proxy to fetch data, while the site it scrapes sits behind a reverse proxy. If you need the right proxy IP for the connection, the practical setup detail is the host and proxy port your provider gives you.
A forward proxy acts on behalf of the client and hides the client's identity from the destination server. A reverse proxy acts on behalf of the server and hides the backend infrastructure from the client. The forward proxy faces out from clients; the reverse proxy faces out from servers.
A residential proxy is a forward proxy. So are datacenter, ISP, and mobile proxies. They all make outbound requests on the client's behalf and present a different IP to the destination, which is the defining behavior of a forward proxy.
NGINX is most commonly used as a reverse proxy, sitting in front of backend servers to handle load balancing, SSL termination, and caching. It can technically be configured as a forward proxy too, but that is far less common.
Yes. Cloudflare is a reverse proxy that sits in front of websites to provide caching, DDoS protection, a web application firewall, and SSL. Clients connect to Cloudflare, which then forwards legitimate traffic to the origin server.
Yes, and it is extremely common. A client may route outbound traffic through a forward proxy while the destination website sits behind a reverse proxy. They operate at opposite ends of the connection and serve different parties, so they coexist naturally.
A forward proxy, specifically a residential or mobile one, so the sites you scrape see ordinary-looking IPs instead of your real address. Reverse proxies are for serving your own infrastructure and are not used for scraping.
Forward and reverse proxies share a name and a basic mechanism — relaying requests — but they serve opposite sides of the connection. A forward proxy represents and hides the client; a reverse proxy represents and hides the server. If you are reaching out to the web and want control over how you appear, you want a forward proxy. If you are running infrastructure and want to balance, cache, and protect it, you want a reverse proxy.
For the forward-proxy side — scraping, privacy, geo-targeting, multi-account work — SpyderProxy residential proxies start at $1.75/GB with 10M+ IPs across 195+ countries, rotating or sticky sessions, and city-level targeting.