Forward Proxy and Reverse proxy

<title>Forward Proxy and Reverse proxy</title> Forward proxy and Reverse proxy table of Contents

• Forward Proxy
• Reverse Proxy
• Difference between the two

Original: http://jingyan.baidu.com/article/f54ae2fcd895b81e93b84973.html

Forward Proxy

Simply put, I am a user, I cannot access a website, but I can access a proxy server
This proxy server, he can access the site that I can't access
So I first connected to the proxy server and told him that I needed the content that I could not access the site
Proxy server go fetch it back and then return it to me

From the point of view of the website, there is only one record when the proxy server is fetching the content.
Sometimes not know is the user's request, also hides the user's information, depending on the agent does not tell the website

The conclusion is that the forward proxy is a server located between the client and the origin server, in order to get the content from the original server, the client sends a request to the agent and specifies the target (the original server).
The agent then forwards the request to the original server and returns the obtained content to the client. The client must make some special settings to use the forward proxy

Reverse Proxy

User Access Http://ooxx.me/readme
But there's no Readme page on ooxx.me.
He was secretly taken back from another server and then spit it out to the user as his content, but the user didn't know

The ooxx.me mentioned here has the reverse proxy function set by the server that corresponds to the domain name.

The conclusion is that the reverse proxy is just the opposite, for the client it is like the original server, and the client does not need to make any special settings
The client sends a normal request to the content in the reverse proxy's namespace (name-space), and then the reverse proxy will determine where (the originating server) is forwarding the request.
and return the acquired content to the client, just as the content was originally its own

Difference between the two

From the use to say:
A typical use of a forward proxy is to provide access to the Internet for LAN clients within the firewall.
Forward proxies can also use buffering features to reduce network usage.

A typical use of a reverse proxy is to provide the server behind the firewall to Internet users for access.
The reverse proxy can also provide load balancing for multiple servers in the backend, or provide buffering services for servers with slower back-end

In addition, the reverse proxy can enable advanced URL policies and management techniques so that Web pages that are in different Web server systems exist simultaneously in the same URL space

From a security standpoint:
A forward proxy allows a client to access any Web site through it and hides the client itself, so you must take security measures to ensure that only authorized clients are serviced
The reverse proxy is transparent to the outside, visitors do not know that they are visiting an agent

Forward Proxy and Reverse proxy