• 목록
• 글쓰기
• 게시판 리스트 옵션
  • 수정
  • 삭제

It's a proxy, also called a proxy server, is software that acts in the role of a intermediary between server and a client over the internet. Without a proxy, a client could send requests for every resource straight to the server and the server would deliver the resource directly for the client. While this is a simple method to grasp and implement, the addition of proxy servers can bring advantages in the form of improved performance and privacy, security and many more. As a pass-through layer a proxy acts as an additional security layer on the internet between clients and servers.

There is a general consensus that the mix of hardware for servers as well as software used to set up proxy installations is usually referred to by the name of proxy servers. This article will be focusing on proxy servers which are generally classified as software, and also within the context of web servers. We will discuss of the two main types that are forward proxy and reverse proxy. reverse proxy. Each has its own use situation, and is often misunderstood because of the similar terms.

This article will provide you with an understanding of what proxies are and what their subtypes are and how they function in the most common configurations. After reading this article, it will be able to determine the circumstances where you could benefit from a proxy. You'll then select the most appropriate forward and reverse proxy in each situation.

Understanding Forward Proxies

The forward proxy, also known in the form of an open proxy acts as the representative of a client who wishes to forward a request over the internet to a source server. In this instance, the whole attempt to send requests by the user will instead be transferred to the forward proxy. This forward proxy, acting on behalf of the client will examine the request. The first step is to determine if the client is permitted to accept requests via this particular forward proxy. Then, it decides to reject an request and forward it to its origin server. The client isn't allowed directly access to internet. It has access to only what forward proxy permits it to connect to.

One of the most popular uses for forward proxy is to achieve greater privacy or security online. Forward proxy can be used to connect to the internet instead of a client and in this manner, it may use an alternative IP address to that of the client's initial IP address.

Depending on how it has been set up the forward proxy will offer various functions based on how it is configured, which lets you:

• 
  
• 
  Avoid tracking ads.
  
  
• 
  Circumvent surveillance.
  
  
• 
  Find restrictions based on the location you are in.
  
  

Forward proxies are also used to secure systems which are centralised and have permission-based access, such as in the workplace. The entire internet can be passed through the open forward proxy. administrators can allow only a few clients connection to internet through an ordinary firewall. Instead of setting up security firewalls on the server layer, that could include a variety of machines that have different settings and users. A firewall can be installed at an intermediate layer of forward proxy.

It is crucial to keep in mind that forward proxy servers must be set up manually to be used, however reverse proxies remain unnoticed by the clients. Depending on whether the IP address of a user is transferred to the origin server by forward proxy privacy and anonymity might be granted, or left unnoticed.

There are many options to consider for forward proxy options:

• 
  
• 
  Apache The Apache is a popular open-source web server which provides forward proxy features.
  
  
• 
  Nginx is a popular open-source webserver that comes with forward proxy functions.
  
  
• 
  Squid is an open-source forward proxy which uses an HTTP protocol. It isn't an all-inclusive web server application. We have a instructions on setting up Squid proxy for private connections on Ubuntu 20.04.
  
  
• 
  Dante Forward Proxy that utilizes the SOCKS protocol instead of HTTP which makes it more to handle peer-to-peer traffic. You may also want to examine how you can setup a Dante proxy for private connections in Ubuntu 20.04
  
  

Understanding Reverse Proxies

A reverse proxy serves as a webserver, which takes care of requests from clients instead. The web server may serve as a single server, or a number of servers. Additionally, it can serve like an app server, such as Gunicorn. In any of these situations, the request comes from a user via the internet. Typically, the request is directed directly to the server that is the one that has the resources the user is requesting. Instead, a reverse proxy acts as an intermediary and shields it from any direct interaction with the internet's open.

From the viewpoint of the client, interfacing using reverse proxy isn't distinct from communicating with the web server directly. It's functionally identical and the user cannot discern the distinction. Clients make requests for resources that is then followed by receiving it, without any extra configuration required by the user.

Reverse proxies offer features like:

• 
  
• 
  Security centralized for web servers.
  
  
• 
  The sending of traffic according to rules that you can determine.
  
  
• 
  Additional features to cache data.
  
  

Although centralized security is an advantage of both forward and reverse proxy servers, reverse proxies offer this benefit to that layer of the internet server, but not to the layer that clients use. Instead of the maintenance of firewalls on the web server layer which can contain multiple servers with different configurations, the bulk of firewall security could be centered at the reverse proxy layer. Furthermore, getting rid of the burden of interacting with firewalls and communicating with clients who request information from web servers allows them to concentrate on serving resources.

If there are multiple servers running through a reverse proxy The reverse proxy takes care of how requests are routed to which server. There may be several web servers providing the exact same service, each providing various kinds of resources or a combination of both. They may use the HTTP protocol to function as a standard web server, but they may additionally include protocols for application servers like FastCGI. You can create a reverse proxy to route clients to specific servers based on the resource they request or to follow specific rules for traffic volume.

Reverse proxies also can profit from their positioning over web servers, as they provide caching functionality. Massive static resources can be configured by using caching rules to stop hitting web servers with each request. Certain options allowing users to provide static files directly, without connecting to a web server even once. Additionally, reverse proxy can handle the compression of these assets.

The popular Nginx webserver is a highly popular reverse proxy solution. While Apache has a reverse proxy service however, the Apache web server has reverse proxy capabilities as an additional option to Apache however Nginx was initially designed and specifically focused on reverse proxy functions.

Differentiating Forward Proxy and reverse Proxy Use Differentiating Forward Proxy and Reverse Proxy Utilization

Since "forward" as well as "reverse" are associated with the notion of directionality and false connections to "incoming" and "outgoing" traffic the labels could be confusing because both types of proxies handle responses and requests. In addition, the most effective method to differentiate between forward and reverse proxy is to analyze the requirements of the app you're working on.

Reverse proxy is a crucial feature when you are creating a solution for serving web applications on the internet. They are your web servers in any interaction with the internet.

Forward proxy can be useful for use in front of clients for personal use or in a working environment. They serve as the proxy for your client via any communication with the internet.

Differentiating by use case as opposed to focusing only on standard name conventions makes it easier to avoid confusion.

Conclusion

The article explained the meaning of a proxy, with two types of proxy, the reverse proxy and forward proxy. Practical scenarios to use them as well as a discussion of most useful features were utilized to differentiate forward proxies from reverse proxy. If you're interested to learn more about the advantages of proxies, then you can check out our tutorial on how you can install Nginx as an reverse proxy and an internet server using Apache in Ubuntu 20.04 Server. Ubuntu 20.04 server.

If you loved this article and you want to receive more details about Proxy Sites (bigbluerevival.com) generously visit the web site.