Forward Proxy: For example, I'm a user, I can not access a website, but I was able to access a proxy server, the proxy server does , he can not visit the sites I visited, so I would like to connect to a proxy server, tell him I need that can not access the site's content, the proxy server to get back, and then return to me. From the perspective of the site, just in time to take the contents of the proxy server has a record, and sometimes do not know the user's request, also hides user data, depending on the agency report does not tell the site.
The client must be set up forward proxy server, of course, the premise is to know the forward proxy server's IP address, and port agents.
Forward proxy uses:
( 1 ) Resource Access originally inaccessible, such as google
( 2 ) can do caching, to accelerate access to resources
( 3 ) access authorization to the client, Internet authentication
( 4 ) the proxy can record user access records (access management), Foreign hide user information
Reverse proxy ( Reverse the Proxy): refers to the actual operation mode proxy server to accept connection requests on the internet, then the request is forwarded to the server on the internal network , and the results obtained from the server back to the requesting internet connection The client, this time on the performance of the external proxy server is a server. Visitors who do not know they visit is a proxy. Because the client does not need any configuration can be accessed.
Role: 1. Load Balancing
2. ensure security within the network, you can use a reverse proxy WAF provides functionality to prevent web attacks