{"id":41258,"date":"2026-10-12T14:01:03","date_gmt":"2026-10-12T14:01:03","guid":{"rendered":"https:\/\/nodemaven.com\/?p=41258"},"modified":"2026-10-12T14:01:04","modified_gmt":"2026-10-12T14:01:04","slug":"what-is-a-reverse-proxy","status":"publish","type":"post","link":"https:\/\/nodemaven.com\/zh\/blog\/what-is-a-reverse-proxy\/","title":{"rendered":"What Is a Reverse Proxy? Architecture, Uses, and Security"},"content":{"rendered":"

A reverse proxy is a server that sits in front of one or more backend servers and handles client requests on their behalf. Visitors connect to the proxy, and the proxy talks to the servers that actually run the website or application. Think of it as the public front door of a site, with the real machines kept out of sight.<\/p>\n\n\n

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Need a proxy for your requests?<\/strong>
Try NodeMaven residential proxies for reliable access to web data with flexible location targeting<\/strong><\/p>\n<\/div>\n <\/div>\n \n \n \u7acb\u5373\u8bd5\u7528 <\/a>\n <\/div>\n<\/div>\n\n\n

\u4ec0\u4e48\u662f\u53cd\u5411\u4ee3\u7406\uff1f<\/h2>\n\n\n\n

A reverse proxy receives requests from clients<\/strong> such as browsers and mobile apps, decides which backend server should handle each one, and passes the backend’s response back as if it came from the proxy itself.<\/strong> The client never needs to know how many servers exist or where they run.<\/p>\n\n\n\n

Without a reverse proxy, a browser connects straight to the origin server, the machine that holds the site’s code and data. Every backend then needs its own public address and its own exposure to the internet. With a reverse proxy, only the proxy has to be reachable from outside.<\/strong><\/p>\n\n\n\n

Here is a simple example.<\/strong> A company runs its marketing site, a customer API, and an admin panel on three separate machines. Everyone visits example.com<\/u><\/em>. The proxy sends \/api<\/u><\/em> requests to the API servers, \/admin<\/u><\/em> to the admin panel, and everything else to the website.<\/p>\n\n\n\n

Forward proxy vs. reverse proxy<\/h2>\n\n\n\n

A forward proxy acts for the client.<\/strong> The client is set up to send its requests to the proxy, which then contacts websites on its behalf. The website sees the proxy’s IP address instead of the client\u2019s. People use forward proxies to reach content restricted by location or network, as covered in this guide to unblocking websites<\/a>, or to filter traffic inside an organization.<\/p>\n\n\n\n

A reverse proxy acts for the server.<\/strong> Clients configure nothing. They request an ordinary URL, and the proxy answers it. Site owners use reverse proxies to spread load, cache content, and keep backend servers out of direct reach.<\/p>\n\n\n\n

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<\/td>Forward proxy<\/strong><\/td>\u53cd\u5411\u4ee3\u7406<\/strong><\/td><\/tr>
Position in the request flow<\/td>Between clients and the internet<\/td>Between the internet and backend servers<\/td><\/tr>
\u4e3b\u8981\u7528\u9014<\/td>Control or change how clients reach external sites<\/td>Manage, protect, and speed up access to a site’s servers<\/td><\/tr>
\u5178\u578b\u4f7f\u7528\u573a\u666f<\/td>Geo-targeted browsing, content filtering, web data collection<\/td>Load balancing, caching, TLS termination, routing<\/td><\/tr>
Whose traffic or infrastructure<\/td>Outbound traffic from a user or organization<\/td>Inbound traffic to the site owner’s infrastructure<\/td><\/tr>
Who sets it up<\/td>The client or the client’s network<\/td>The site owner<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

NodeMaven provides forward proxies, not reverse proxy infrastructure. NodeMaven \u4f4f\u5b85\u4ee3\u7406<\/a> and mobile proxies send a client’s requests to external websites through different IP addresses and locations.<\/p>\n\n\n\n

That helps with geographically targeted SEO monitoring, web scraping, ad verification, and market research.<\/p>\n\n\n\n

Which IP type fits depends on the target site, as this comparison of mobile, residential, and datacenter proxies<\/a> explains. <\/p>\n\n\n\n

How does a reverse proxy work?<\/h2>\n\n\n\n
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  1. A client sends a request.<\/strong> A browser asks for https:\/\/example.com\/<\/em><\/strong> products. DNS points that name at the reverse proxy, not at a backend.<\/li>\n\n\n\n
  2. The proxy receives it.<\/strong> For HTTPS traffic, the proxy typically completes the TLS handshake here. This is called TLS termination.<\/li>\n\n\n\n
  3. The proxy picks a backend.<\/strong> It matches the request against its rules, such as hostname, path, or headers, and finds the group of servers that can answer. If a group has several servers, a load-balancing method like round robin or least connections chooses one.<\/li>\n\n\n\n
  4. The backend processes the request.<\/strong> The proxy forwards it, often over a private network. It usually adds a header such as X-Forwarded-For so the backend can still see the original client address.<\/li>\n\n\n\n
  5. The response returns through the proxy.<\/strong> The proxy may cache it, compress it, or adjust headers before sending it to the client.<\/li>\n<\/ol>\n\n\n\n

    TLS termination means the proxy decrypts incoming HTTPS traffic and forwards plain HTTP to the backends, or re-encrypts it for the internal leg. It keeps certificate management in one place. Whether the internal leg needs encryption depends on how far you trust your internal network.<\/p>\n\n\n\n

    Request routing is the rule matching in step 3. One proxy can serve many hostnames and paths, which is how a single public address fronts a whole set of services.<\/p>\n\n\n

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    Make web requests more reliable.<\/strong>
    Access residential and mobile IPs with flexible targeting and session options<\/strong><\/p>\n<\/div>\n <\/div>\n \n \n \u7acb\u5373\u8bd5\u7528 <\/a>\n <\/div>\n<\/div>\n\n\n

    What is a reverse proxy used for?<\/h2>\n\n\n\n

    A reverse proxy can do all of the following, but not every one does. What it does depends on how it is configured<\/strong>.<\/p>\n\n\n\n