Reverse Proxy

Reverse Proxy

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A proxy server to connect to the internal network to the Internet.
Otherwise, the proxy applications over the Internet, and send them to the internal network server. Those who make a request to represent the internal network can be notified.
Computer network, the proxy server is a type of proxy server to one or more of the resource on behalf of a client takes. The proxy server itself as the origin of the resources will be returned to the customer. [1] forward proxy customers, partners, members from any contact with the server to connect with any client as an intermediary proxy server acts as an intermediary for the acts.

Reverse Proxy
Reverse Proxy (UK: Reverse proxy) or reverse proxy, the installed proxy server to via a request to a specific server always. It is not intended for unspecified number of servers different from the common proxy. Reverse proxy for requests that are submitted by an unspecified number of clients, you can reduce the burden on a specific server by offloading the response, for the purpose of and increasing the security of a particular server by restricting access used.
The reason for the reverse proxy is used is as follows.
Security: defense by preceded by a reverse proxy server is increased one stage. Sometimes to have the functions of authentication and authorization in the reverse proxy. It is possible to realize a single sign-on and perform authentication and authorization on the reverse proxy if there is a plurality of servers.
Encryption / SSL speed: When creating a secure Web site encrypted with SSL, encryption rather than the Web server itself perform is performed in reverse proxy server with hardware for SSL acceleration. When used in this application, also known as SSL Offloading.
Load Balancing: reverse proxy may be used to distribute the load across multiple servers. When combining a reverse proxy to the Web server group, it may be rewritten URL that the reverse proxy is on the Web page (for converting a URL that is published to the outside internal position).

Unchanged contents of the cache: reverse proxy acts as a cache for content that does not change, such as images in the Web server and reduces the load on the Web server. For most Web sites accessible it is read only, whereby the Web server load is greatly reduced.

Compression: Reverse Proxy optimizes compresses the content, can reduce the load time.

Speed ​​Adjustment: If the program on the Web server has to generate the content, and communicates directly with the client, it is not possible to terminate the program when the client does not wait for downloading. Reverse proxy caches together content Web server is generated, the program enables terminated at that point, the client is capable of downloading the client-side velocity.

Virtual server consolidation: if multiple servers each of which provides its own service by introducing a reverse proxy, the user may be shown as a single server.
See also [edit]
Proxy
Squid - Proxy servers can also be used as a reverse proxy

May also be used as a reverse proxy - Apache HTTP Server

Lighttpd - available as a reverse proxy with load balancing feature
Varnish Cache - of open source reverse proxy
nginx - reverse proxy and Web server
External links [edit]
SwitchFlow Reverse Proxy - C ++ reverse proxy for Linux
Perlbal - Perl-based reverse proxy / load balancer / Web server
PortFusion - of open source reverse proxy
Pound - reverse proxy for load balancing
YXORP - firewall and reverse proxy. GPL

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