• 목록
• 글쓰기
• 게시판 리스트 옵션
  • 수정
  • 삭제

It's also known as proxy or proxy server. proxy or proxy server, is a software program for servers which serves as an intermediary between a server and a client via the internet. In the absence of an intermediary a customer would be able to send a request every resource straight to the server and the server would then serve the requested resource directly to the client. While this procedure is easy to comprehend and implement with proxy servers, it does offer benefits in terms of higher performance as well as privacy, security and much more. As a pass-through layer the proxy serves as a guardian of the internet between the servers and clients.

In general, the combination of server hardware as well as software to install proxy servers is often referred as proxy servers. In this article, we'll examine proxies commonly referred to as software, as well as ones that work in conjunction with web servers. We will provide a description of two types of proxies: forward proxy and a reverse proxy. reverse proxy. Each type has its own use case, and is often misunderstood due the similar naming convention.

This article will give you some understanding about what proxy servers and their subtypes are, and also what they can accomplish for typical configurations. Through this article, you will be able to identify the scenarios where an effective proxy could be useful, and select the best option between forward and reverse proxy to suit your needs in any given circumstance.

Understanding Forward Proxies

Also, a forward proxy also known as an open proxy is the client's representative which is attempting to send a request via the internet to the server from which it originated. In this case, the entire request to send it by the client will be sent by the forward-proxy. In this scenario an agent acting on behalf of the forward proxy in the in the place of the customer will review the request. It is the first thing to establish what authorization the user has to send requests to this particular forward proxy. The forward proxy will then deny this request and send it back to the server that originally sent it. The client is not able to have direct connection to the internet. It can only reach what the forward proxy gives it access to.

One of the most frequent reasons for forward proxy is greater privacy or anonymity on the internet. A forward proxy can be utilized to access the internet in lieu of a client, and may use a different IP address that is different from the IP address that was originally assigned to the client.

Depending on how they were set up in the past forward proxy servers are able to offer a range of services and let you:

• 
  
• 
  Avoid ad tracking.
  
  
• 
  Circumvent surveillance.
  
  
• 
  You can identify limitations based on your location.
  
  

Forward proxies are also employed in security systems that require centralized and have permission-based access for instance, in the workplace. When all internet traffic goes through a common forward proxy layer an administrator is able to restrict access to certain users to the internet. This is then filtered by a common firewall. Instead of having firewalls installed for the client layer which may comprise a variety of computers with different environments and users the firewall could be placed on an intermediate layer.

Be aware that forward proxy servers must be manually set up in order to be used but reverse proxies are not noticed to the user. Based on whether an IP address from the customer is sent to the source server via this forward proxy, security and anonymity may be granted or not noticed.

There are many options to look into for forward proxies:

• 
  
• 
  Apache is a well-known open source web server that provides forward-looking proxy features.
  
  
• 
  Nginx: Another popular open-source web hosting server with forward proxy capabilities.
  
  
• 
  Squid is an open source forward proxy that makes use of an HTTP protocol. It doesn't provide the entire web server. We've got a guide on how you can configure Squid proxy so that it allows private connections in Ubuntu 20.04.
  
  
• 
  Dante Forward Proxy that utilizes the SOCKS protocol instead of HTTP which makes it better appropriate for scenarios like peer-to-peer connections. You can also look at how to create a Dante proxy to connect privately on Ubuntu 20.04
  
  

Understanding Reverse Proxies

Reverse proxy is an agent of a web server that handles incoming requests by clients on behalf of. This web server may consist of a single server or multiple servers. It could also serve for application servers such as Gunicorn. In any of these situations, the request may come from a user through the internet in general. In the majority of cases, this request will go direct to the website hosting the resources the client requires. Reverse proxy acts as an intermediary, which separates Web server from direct interactions with the open internet.

From a client's viewpoint, which is a user's viewpoint using reverse proxy isn't different from connecting directly to your website server. It's the same thing but the client can't be able to tell the difference. The customer requests an item, and it is delivered without any additional configuration needed to be performed by the client.

Reverse proxy proxy servers can offer options, such as:

• 
  
• 
  A central layer of security that protects the server.
  
  
• 
  Controlling traffic coming inbound according to rules that you can establish.
  
  
• 
  A new feature to cache has been added.
  
  

While central security is an advantage of both reverse and forward proxy services, reverse proxy providers provide this feature to the level of an internet server, rather than clients. Instead of focusing on the maintenance of firewalls at the layer of web servers that may contain multiple servers with various configurations, a majority of firewall security can be focused on this layer. In addition, the absence of interfacing with a firewall as well as responding to clients' requests through web servers allows them to focus solely on serving the needs of their customers.

If multiple servers are using a reverse proxy, the reverse proxy also determines the way requests are routed to which server. A number of web servers could be offering the same content but each serving different types of content or a mix of them. These servers may use the HTTP protocol like a traditional web server, but they may also include protocols for applications like FastCGI. You may also set up reverse proxy in order to direct clients to specific servers in accordance with the service requested or to follow certain rules for traffic load.

Reverse proxies may also make use of their position on top of web servers by supplying caching functionality. Large static files can be configured using caching rules to prevent the web server from being hit with every request, with certain solutions providing the option of providing static files directly without touching the web servers in any manner. Additionally, the reverse proxy could manage the compression of these assets.

The well-known Nginx web server is a wildly popular reverse proxy solution. However, it is true that the Apache website server equipped with a reverse proxy functionality and is an alternative option for Apache and is in contrast to Nginx was designed initially for and focused on reverse proxy functionality.

Distinguishing Forward Proxy from reverse Proxy Use Cases

Because "forward" in addition to "reverse" are associated with an impression of directionality and a false comparison between "incoming" as well as "outgoing" traffic These labels can confuse because each type of proxy handles both responses and requests. Instead, a better way to differentiate between reverse and forward proxy is to take into account the requirements of the application you're creating.

Reverse proxy can be useful in designing a solution that can provide web-based applications on the internet. They act as your servers in all interactions on the internet.

A forward proxy is helpful when placed on the internet in front of traffic from clients for your personal use or in a work environment. They are a representation of your traffic whenever you interact on the internet.

Differentiating by use case as opposed to focusing only on the similar naming conventions can help you in eliminating confusion.

Conclusion

This article explains what a proxy is with the two primary types, namely the reverse and forward proxy. Examples of practical applications as well as an examination of important characteristics were used to establish forward proxies and reverse proxy. If you're interested to learn more about how to implement proxy services, you can refer to our tutorial on how you can set up Nginx as a reverse and web server proxy with Apache running on the Ubuntu 20.04 server.

Here is more information in regards to Proxy Sites (www.4shared.com) review the site.