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Reverse proxy principle is very similar to a proxy server

Reverse Proxy

Reverse proxy principle is very similar to a proxy server. Associates (resp. Watershed) is connected to the customers' requirements. In practice, several of the most frequently used in servers. All of this points to an Internet server to server connections from a single or routed through the proxy server or to request processing.

Contents [hide]
Operating on the principle of 1
The main reasons for the use of 2
2.1 Opensource solutions to run a reverse proxy server

2.2 Commercial solutions for operating a reverse proxy server

3 Related Articles
4 Sources
The principle of operation [Edit | edit]

Reverse proxy, an external interface protection for the client distributes traffic across multiple servers. It is used for example in the server load balancing cluster. For example, HTTP proxy caching to reduce the load on the ISP network forwards thanks to the Internet and the exit polls - but the proxy server is used to operate the network.


[Edit the main reasons for using | edit]
Security: a level of security to protect Web servers are connected via proxy
Encryption / SSL acceleration: When you create a secure web server with SSL in itself, but a reverse proxy server hardware for SSL acceleration, does not provide.
Load balancing, reverse proxy server is connected to avoid excessive traffic can degrade the

Caching: reverse proxy cache static content and thus shorten the attached application servers and respond to light

Compression: Compress and sending proxy content to optimize and shorten response
Sending part: dynamic pages can be created in its entirety and parts sent by the client, so the application needs to remain open to create a page on a central server and does not consume unnecessary system resources
| Opensource solutions [edit the proxy server to run edit]
Varnish
Squid Cache
Apache HTTP Server
Perlbal
Hiawatha (web server)
Lighttpd
Nginx
Pound
Otherwise, the proxy server is running commerce solutions [Edit | edit]
Kerio Control
Microsoft Windows Server 2012 R2, the role of Web Application Proxy
Related Articles [Edit | edit]
Proxy servers
Sources [Edit | edit]

This article is a translation of the text of the English Wikipedia article on the reverse proxy is used.


Computer Networks

Reverse Proxy

Reverse Proxy

 the frlopediaee encyc
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

WHAT IS A REVERSE PROXY SERVER?

WHAT IS A REVERSE PROXY SERVER?

Agent or broker or an intermediate server that forwards requests for content from multiple clients to different servers around the Internet server. Reverse proxy server is a kind of agent that usually sits behind the firewall on a private network and directs client requests to the appropriate server back-end server. And conversely agent provides an additional level of abstraction and control to ensure smooth flow of network traffic between clients and servers movement.
The most common uses for reverse proxy as follows:
Load balancing - can reverse proxy server as a "traffic cop", sitting in front of rear facade servers and distributing client requests across a group of servers in a way that maximizes speed and take advantage of the ability to time ensuring the capacity of any server, which can degrade performance. If a server goes down, the load balancer redirects traffic to the remaining online servers.
Web Acceleration - can reverse proxies compression of input and output as well as demand usually cache content, which speed the flow of traffic between clients and servers. They can also perform additional tasks such as SSL encryption to take charge of Web servers, thereby improving performance.
Security and anonymity - by intercepting requests turned their back-end servers, server and reverse proxy protects the identity and as an additional defense against security attacks. It also ensures that multiple servers can be accessed from the GPS registration or URL regardless of the structure of local area network.
How you can nginx Plus help?
More nginx Nginx is the best-in-class solutions and reverse proxy used by high traffic sites such as Dropbox, Netflix, and Zenga. More than 130 million sites worldwide and more than 40% of the 10,000 most visited sites in the world are using more nginx nginx to deliver content quickly and reliably.
As a result, the list in reverse proxy software, nginx Plus not only less expensive than hardware-based solutions with similar capabilities can be deployed in the public cloud, as well as its own data centers, while infrastructure cloud providers usually do not allow customers or agents of the inverse property devices in their data centers.

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