A Startling Fact about Proxy Sites Uncovered > 자유게시판

프로젝트 :

업체명 : WK

담당자명 : Jed Korth

연락처 : NQ

이메일 : jedkorth@yahoo.com

An proxy often referred to as proxy server software that functions as an intermediary between client and server on the internet. Without the use of a proxy, an individual can send a request for the item to an online server, and the server would then deliver the resource directly back to the user. Though this approach is simple to grasp and implement, the addition of proxies can offer advantages in terms improved performance and privacy, security and many more. In addition to adding a layer of security proxy servers also act as a security guardian of the internet between servers and clients.




There is a general consensus that the set of server hardware along with installed proxy software are also known as proxy servers. This article will focus on proxies which are usually classified as software, and in the context of web servers. We will present a summary of the two main types of proxies, which include a forward proxy and a reverse proxy. Each has its own usage that can cause confusion because of a similar name convention.




This article will give you an idea of the nature of proxies and what their subtypes are, as well as how they work in the typical setups. In the article you'll be able to determine the situations that are the best to use a proxy and make the right choice between forward and reverse proxy, in any situation.



Understanding Forward Proxies



In other words, a forward proxy sometimes referred to as open proxy. In other words, an open proxy acts as a representative of a client who wants to send an internet request to an origin server. In this scenario every request from the client will instead be routed directly to the forward proxy. The forward proxy, acting in place of the client, will examine the request. First, it will decide if the client is authorized to accept requests from this specific forward proxy. It will then decide if it is authorized to deny a request and send it back to the server that originally received it. The client is not able to have direct access to the internet. It is only able to access the internet that the forward proxy grants it access to.




The primary reason for people for using forward proxy services is to improve privacy or security when surfing the internet. A forward proxy is able to access the internet in place of a client, and, in this way it can utilize a different IP address than the original IP address utilized by the client.




Based on the way it was set up in the past, forward proxy servers can give you a variety of options and allow you to:




Avoid ad tracking.


Circumvent surveillance.


You can determine restrictions based upon your geographic area.




Forward proxies are also utilized in systems that offer central security and authorization based access, such as at work. When all internet traffic passes through an open forward proxy, administrators can limit access to specific clients on the internet and filter it through a standard firewall. Instead of putting firewalls for the client layer that could include a variety of devices that are different in user and environment the firewall could be placed in the forward proxy layer.




Note that the forward proxy setting have to be manually configured for use in order to be used, while reverse proxy settings can be disregarded by clients. Depending on whether the IP address of a client is transmitted to the source server via forward proxy privacy and anonymity could be granted or not.




There are a variety of possibilities to consider for forward proxies




Apache: A popular open-source webserver that includes forward proxy features.


Nginx: Another well-known open-source webserver, this one with forward proxy capabilities.


Squid is a free forward proxy that utilizes an HTTP protocol. It doesn't provide a complete Web server service. Take a look at our step-bystep guide to set up Squid proxy to permit private connections within Ubuntu 20.04.


Dante forward proxy which runs on the SOCKS protocol, instead of HTTP this makes it more suited to situations such as peer-to-topeer traffic. You can also look into the steps to install the Dante proxy for private connections in Ubuntu 20.04



Understanding Reverse Proxies



A reverse proxy serves as a proxy for a web server that handles the incoming requests of clients on its behalf. The web server may include one or more servers. Also, it could serve as an application server such as Gunicorn. In any of these situations, an application request is made by a user on the internet as a whole. Most of the time, the request will be sent directly to the server that hosts the information that the client is seeking. Instead, a reverse proxy acts as an intermediary, securing Web server from any direct interaction with the web's public.




From a consumer's point of view that is a user's viewpoint, interfacing with a reverse proxy is similar to using an internet server direct. It's the same, but the client is unable to discern the difference. The client asks for an item and receives it, with no additional configuration required from the client.




Reverse proxies can provide features such as:




Centrally secured to protect Web Server Layer.


Controlling traffic inbound based on rules that you can set up.


The caching feature has been added to the app.




While central security is an advantage of both forward and reverse proxy servers, reverse proxies provide this feature only to the server layer, only the layer that clients use. Instead of maintaining firewalls on Web server layers which may contain many servers with different configurations, most of firewall security can be targeted at reverse proxy layers. Furthermore, the elimination of the responsibility to interact with firewalls as well as dealing with clients' requests outside of web servers allows them to concentrate on serving the needs of their customers.




When there is a multitude of servers hosted using a reverse-proxy, the reverse proxy will also be responsible for directing what requests go at which server. There may be several web servers providing the same content, offering various types of resources or a mixture of both. They can use the HTTP protocol similar to a traditional web server, however, they may also use other protocols for application servers like FastCGI. It is also possible to set up a reverse proxy to redirect clients to specific servers based upon the requested resource or comply with specific rules pertaining to traffic load.




Reverse proxies can also make use of their location prior to web servers by providing caching capabilities. The large static files can be set up with caching rules to avoid from hitting web servers on every request. There are solutions even allowing users to serve static files immediately without needing to connect to the web server even once. Additionally reverse proxy solutions can manage compression of these assets.




The well-known Nginx web server can also function as an extremely popular reverse proxy solution. Although Apache is also a reverse proxy service, Apache is a reverse proxy service. Apache web server is also able to function with a reverse proxy function as an additional characteristic of Apache however Nginx was originally designed for and focuses on the reverse proxy feature.



Differentiating Forward Proxy and reverse Proxy Examples



Because "forward" or "reverse" have connotations of directionality, and false comparisons to "incoming" and "outgoing" traffic the labels could be confusing, because both types of proxy are able to handle requests and responses. The best way to distinguish between forward and reverse proxy is to examine the requirements of the application you're building.




A reverse proxy can be useful when designing an application that runs web-based services over the internet. They serve as your web servers whenever you connect to the internet.




Forward proxy can be useful when it is displayed in front of customers for personal use or within an office environment. They are your client's representative whenever you use the internet.




A case-based distinction instead of focusing on the commonly used naming conventions can help in eliminating confusion.



Conclusion



The article clarified the meaning of a proxy, which includes two types that are forward and reverse proxy. Practical applications and a discussion of beneficial features were utilized to differentiate between forward and reverse proxy. If you're interested in knowing more about how to set up proxy servers, you can refer to our guide on how to set up Nginx as an internet server and reverse proxy using Apache on Ubuntu 20.04. Ubuntu 20.04 server.



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