클잼 로고

• 목록
• 답변
• 글쓰기
• 게시판 리스트 옵션
  • 수정
  • 삭제

The term "proxy" is a reference to the notion of a proxy frequently referred to as a proxy server is software that serves in the role of intermediary between a server and client on the internet. Without a proxy, a client can send a request for the server directly and the server would then serve direct to the requester. While this is a simple method to comprehend and implement, adding proxies provides benefits such as increased performance as well as security and privacy and so on. As a pass-through layer, the proxy acts as a security layer to the internet between users and servers.




In general, the set of server hardware coupled with the software to install proxy servers is often known as proxy servers. This article will focus on proxy servers that are usually described as software but specifically with respect with web server. We will provide a brief overview of the two main types of proxies, which is the reverse proxy as well as a forward proxy and reverse proxy. reverse proxy. Each type comes with its own use case, and is often misinterpreted due to the overlapping terminology.




This article will provide you with an understanding of how proxies work, what their subtypes and ways in which they can be beneficial in a variety of configurations. If you read this article, you'll discover the circumstances in which using proxies can be advantageous, and determine the most suitable alternative between reverse proxy and forward proxy for a particular scenario.



Understanding Forward Proxies



Forward proxy is also known as an open proxy serves as the representative of the client trying to transmit requests via the internet to a server that is the source. In this scenario, every request made by the user will instead be handled by the forward proxy. Forward proxy in the place of the client, will examine the request. Then, it will decide whether the client is allowed to transmit requests through this specific forward proxy. It will then decide whether to reject the request or forward it to the server that originated the request. The client isn't able to establish a direct connection to the internet. It is only able to connect to what the forward proxy allows the client to access.




The most common reason to utilize forward proxy servers is to improve privacy or security while using the internet. Forward proxy allows you to access the internet instead of a client, and in this way, it utilizes an IP address that is different from the original IP address of the client.




Depending on how it's configured, and how it's configured forward proxy could offer a variety of features and allow you to:




Beware of ads-trackers.


Circumvent surveillance.


You can identify limitations based on your geographic place of residence.




Forward proxies can also be used for security systems which are centralized and accessible is based on permissions, such as at a workplace. If all internet traffic goes through an open forward proxy layer, an administrator can restrict access to only a select group of users to the internet, which is filtered by a common firewall. Instead of establishing firewalls for the client layer that can be utilized by a number of computers that have different settings and types of users, it is possible to have an firewall that is located in the forward proxy layer.




Take note of the fact that forward proxies must be manually configured to be used, whereas reverse proxies can be hidden from the view of clients. Based on whether your IP address a user is relayed back to the origin server by the forward proxy privacy and anonymity may be granted or denied.




There are many options to consider for forward proxy services.




Apache A well-known, open-source web server that comes with forward proxy capabilities.


Nginx: Another popular open-source webserver which comes with forward proxy features.


Squid: A free forward proxy that uses the HTTP protocol. It's not included with the complete web server. Follow our steps on how to set up Squid proxy to permit private connections in Ubuntu 20.04.


Dante Forward proxy that utilizes the SOCKS protocol instead HTTP which makes it more suitable for applications such as peer-to-peer connections. You may also want to check out how to configure Dante proxy to permit private connections on Ubuntu 20.04



Understanding Reverse Proxies



A reverse proxy acts in the capacity of an intermediary for web server, which handles requests from customers for its behalf. It could represent either a single or multiple servers. Also, it could represent an application server, like Gunicorn. In any case the request will be made through the internet generally. Typically, the request is sent directly to the web server which hosts the resources that the client requires of. A reverse proxy acts as an intermediary and isolates Web servers from any direct interaction with the public internet.




From the perspective of the client an individual's viewpoint the process of utilizing reverse proxy isn't any different than interacting with the server in its own way. It's the same, but the client cannot discern the distinction. Client makes a request for the resource and then receives it, without additional configuration needed for the customer.




Reverse proxies provide features like:




The server for the web is secure centrally.


Traffic coming into your site is routed by rules you have set.


A new feature to cache is now available.




While centralized security is a benefit of both forward and reverse proxy servers. However, reverse proxy providers offer this feature only to the server layer but it is not available to the client layer. In lieu of the maintenance of firewalls at the server level which could contain multiple servers with various configurations, the bulk of firewall security is concentrated at the reverse proxy level. Furthermore, taking the responsibility of communicating with firewalls and interacting to client requests off web servers allows the firewall to focus on meeting the requirements of their customers.




If there are multiple servers hosted within a reverse proxy it is also accountable for the way requests are routed at the server that is hosting them. Many web servers may be offering the same service, offering various kinds of resources or a mix of both. They may employ an HTTP protocol to function as a standard web server, but can also include applications server protocols like FastCGI. You can also configure a reverse proxy to direct users to specific servers depending on the resource being requested or to follow certain guidelines for traffic load.




Reverse proxies can also benefit from their position in front of web servers, by providing the ability to cache. Large static assets may be configured by caching rules to prevent hitting web servers each time you request. There are options that allow you to serve directly static assets, without connecting to the web server in any way. Furthermore, the reverse proxy is capable of compressing these assets.




The renowned Nginx web server can also function as a reliable reverse proxy option. While Apache is also a reverse proxy service it is not the only one. Apache web server is outfitted with reverse proxy functionality that is an additional option that is accessible to Apache However, Nginx was designed originally to and concentrates specifically on reverse proxy features.



The difference in Forward Proxy and Reverse Proxy Use Situations



Because "forward" and "reverse" come with connotations of directionality and misleading comparisons to "incoming" and "outgoing" traffic, these labels can be confusing since both types of proxy servers handle both requests as well as responses. An alternative method to distinguish between reverse and forward proxy is to look at the specifications of the application you're creating.




A reverse proxy can be helpful when you are developing an application that connects web applications to the internet. They are your web servers when you interact using the internet.




Forward proxy can be helpful when you are in front of customers for your own usage or in an office setting. They serve as the proxy for your client for interactions on the internet.




Differentiating by case of use instead of focusing solely on naming conventions that are commonplace can aid in avoiding confusion.



Conclusion



This article explains what a proxy is with two types: the reverse proxy and forward proxy. Examples of how to use it and a brief overview of advantageous features were used to differentiate forward proxies from reverse proxies. If you're interested to learn more about the use of proxy servers, you should look over our guide on how to set up Nginx as reverse proxy with Apache on an Ubuntu 20.04 server.



If you enjoyed this short article and you would certainly such as to receive additional information pertaining to Proxy Sites kindly visit our web site.