• 목록
• 게시판 리스트 옵션
  • 수정
  • 삭제

A proxy or proxy server is software that acts acting as an intermediary for client and server via the internet. Without a proxy, a client will send a request to resources directly a server, and the server would serve the requested resource directly to the user. Although this method is easy to understand and use, using proxies has advantages such as greater performance, privacy, security, among others. In addition to moving through, proxies serve as a security layer to the internet between servers and clients.

It is generally accepted that the combined package of server hardware with the software to install proxy servers is commonly referred to as proxy servers. This article will concentrate on the proxy servers that are usually described in terms of software as well as those used together with web servers. This article will provide a brief overview of the two primary types of proxies, the one that is forward and the reverse proxy. Each has their own use that can cause confusion because of a similar language.

This article will provide you with an understanding of types of proxies and subtypes they are, as well as their benefits in a range of configurations. After reading the article you will know what situations where proxies are advantageous, and decide on the best option to use a forward or reverse proxy based on the circumstance.

Understanding Forward Proxies

Forward proxy also known as open proxy. An open proxy is a proxy for a user who attempts to make an online request to a source server. In this scenario, the entire request sent by the client will be controlled by the forward proxy. A forward-proxy, in lieu of the user, will review the request. The first step is to determine whether the client has been authorized to transmit requests through this specific forward proxy. It will then deny a request and forward it to the original server. The client has no direct connection to the internet. It can access only what the forward proxy allows it to access.

A common use case of forward proxies is to provide greater privacy or security on the internet. A forward proxy is connected to internet in place of a client, and as a result it utilizes an alternate IP address that is different from the client's original IP address.

Based on how it is configured according to the method of configuration forward proxy can offer a variety of features dependent on the way it's configured. This allows you to:

• 
  
• 
  Beware of ad-tracker.
  
  
• 
  Circumvent surveillance.
  
  
• 
  Find out the restrictions that apply to the location you are in.
  
  

Forward proxies are also utilized in systems of centralized security and permission dependent access, such as, in workplaces. When all internet traffic is routed through an open forward proxy layer, a administrator can limit access for only a select user group to the internet by a common firewall. Instead of having firewalls in place for the client layer which can comprise a variety of machines that have different environments and users it is possible to set up a firewall located at the front proxy layer.

It is important to remember that forward proxy servers have to be manually configured for be utilized, whereas reverse proxy servers may be hidden from clients. Depending on the type of IP address the client, it will be passed to the server which created it via forward proxy privacy and security is granted or kept secret.

There are many options to be considered for forward proxies

• 
  
• 
  Apache The most well-known open source web server that provides forward proxy capabilities.
  
  
• 
  Nginx: Another well-known open source web server with forward proxy features.
  
  
• 
  Squid: An open-source forward proxy which uses the HTTP protocol. It doesn't provide a complete website server software. You can read our instructions on how to set up Squid proxy to allow private connections on Ubuntu 20.04.
  
  
• 
  Dante Forward Proxy that utilizes the SOCKS protocol instead HTTP and is better for use in situations like peer-to-peer communication. It is also possible to discover how to set up a Dante proxy for private connections on Ubuntu 20.04
  
  

Understanding Reverse Proxies

A reverse proxy functions as an intermediary for a web server, which handles incoming requests by clients on behalf of. The web server could be a single server or a number of servers. Additionally, it could be an application server, such as Gunicorn. In any case, the request is made by an internet user in general. Most of the time, the request will be transmitted directly to the web server, which is equipped with all the resources that the user is in need of. However, a reverse proxy works as an intermediary that isolates Web servers from direct communication with the open internet.

From the consumer's point of the consumer's perspective, working with reverse proxy is not any different from using an internet server direct. It's pretty much the same but the user is unable to see the difference. The client makes a request for the resource, and is then granted without extra configuration that must be completed by the client.

Reverse proxies provide features such as:

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

While centralized security is an advantage of both reverse and forward proxy, reverse proxies do this feature only to the server layer and not the layer that clients use. instead of maintaining firewalls at Web server layers which can include multiple servers and various configurations, most security for firewalls is focused on the reverse proxy layer. In addition, the ease of interfacing with firewalls and communicating with customers who aren't connected to web servers allows the firewall to concentrate on meeting the requirements of their customers.

In the case of multiple servers running within a reverse proxy, it determines which requests are sent to which servers. Many web servers may be operating from the same host, serving various kinds of services or a mix of the two. They use the HTTP protocol, which is similar to a traditional web server. However, they can be equipped with applications server protocols such as FastCGI. You can set up a reverse proxy to direct the clients to specific servers depending on the kind of resource they are searching for, or follow certain rules regarding traffic load.

Reverse proxies can also be able to benefit from their positioning ahead of web servers by providing caching functions. Large static assets can to be configured using caching rules, so that you do not need to contact web servers for every request. Certain software solutions allow you to directly serve static files without touching the server once. Additionally reverse proxy is able to manage compression of these assets.

The popular Nginx web server also functions as an effective reverse proxy option. It is true it is true that Apache web server is equipped with a reverse proxy which is an additional option for Apache however Nginx was originally built to and is primarily focused on reverse proxy capabilities.

Distinguishing Forward Proxy from reverse Proxy Use Examples

Because "forward" and "reverse" have connotations of directionality as well as false comparisons to "incoming" and "outgoing" traffic. It can be confusing as both types of proxies process requests and responses. An alternative approach to distinguish between forward and reverse proxy is to think about the requirements of the application that you're developing.

Reverse proxy can be useful when you're developing a solution to offer web-based services on the internet. They serve as your servers when you interact with the Internet.

Forward proxy applications are beneficial when it is presented to the client for personal use as well as in an office setting. They represent your customers when you connect to the internet.

A case-based distinction instead of focusing on the commonly used naming conventions can help you to avoid confusion.

Conclusion

This article defined what a proxy is with two types: the forward proxy and the reverse proxy. Practical applications as well as an exploration of the benefits were used to distinguish between forward and reverse proxy. If you're interested in learning more about the ways to implement proxies we recommend you read our tutorial on how to configure Nginx as a web server and reverse proxy on Apache on the Ubuntu 20.04 server.

If you have any queries about where by and how to use Proxy Sites - https://justpaste.it/,, you can call us at our web page.

• 페이스북 공유
• 트위터 공유
• 구글+ 공유