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

proxy is also referred to as a proxy is also known by the name of a proxy, a software that sits as a mediator between a client and server on the internet. Without the use of proxy servers, users could send a request for any resource directly to the server and then the server will provide the requested resource directly to the user. While this is a simple method to comprehend and utilize, but the addition of proxy servers can offer advantages in terms of better performance, privacy and security, and much more. In addition to offering a security layer the proxy also acts as a gatekeeper to the internet, separating clients and servers.




The combined package of server hardware along with installed proxy software is often referred as a proxy server. In this article, we will examine proxies commonly categorized as software, and also in relation to web server. We will provide a description of the two primary types of proxies: that is a forward proxy and reverse proxy. reverse proxy. Each one has its own use scenario that is often confused due to the overlap in names.




This article will give you some understanding about what proxy servers and their subtypes are, and how they are useful in a variety of configurations. In this guide, you'll be able to discern the scenarios where it is beneficial to use a proxy and decide on the appropriate option between reverse and forward proxy for any particular circumstance.



Understanding Forward Proxies



A forward proxy also referred to in the form of an open proxy is a proxy for an individual trying to connect via the internet to an source server. In this case, every request made by the client will be sent through an forward proxy. Forward proxy acting in place of the client is able to examine the request. It will first determine whether the client is authorized to receive requests from this particular forward proxy. Then, it will either deny requests or redirect them to the original server. It's not able direct connection to the internet. It can only access what the forward proxy permits it to access.




A common use for forward proxy is to provide greater security or privacy when surfing the web. Forward proxy connects to the Internet as a "client" in this process, it uses an alternative IP address to the IP address of your client.




Depending on how it's been configured based on the configuration forward proxy can provide a variety of functions, allowing users to:




Beware of tracking ads.


Circumvent surveillance.


You can spot restrictions based upon your geolocation.




Forward proxies are also employed in systems that give central security as well as access permissions, like in a workplace. All internet traffic can pass through an open forward proxy. administrators can grant access only to a specific group of users to the internet. This is blocked by the typical firewall. Instead of establishing firewalls on clients, which may be used by several computers that have different environments and types of users A firewall can be placed in this forward proxy layer.




It is important to know that forward proxies have to be manually setup for the use of them, but reverse proxies won't be detected by the user. Depending on whether the IP address of a user is transmitted to the source server via the forward proxy Privacy and anonymity may be granted or kept in the dark.




There are a variety of options to consider in the case of forward proxies.




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


Nginx: Another well-known open-source web server with forward proxy functions.


Squid: A free and free forward proxy that uses the HTTP protocol. It isn't part of the complete web server. We have a step-by-step guide to set up Squid proxy to allow private connections in Ubuntu 20.04.


Dante Forward proxy that uses the SOCKS protocol instead HTTP which makes it better suited for cases like peer-to-peer traffic. It is also possible to look into how you can install a Dante proxy to allow private connections to Ubuntu 20.04



Understanding Reverse Proxies



Reverse proxy is an intermediary for a web server that handles any requests that come in from clients its place. This server can serve as a single server or as a set of servers. Additionally, it can contain an application server such as Gunicorn. It is possible to get the request of a customer via the web at large. In the majority of cases the request will be made directly to the server hosting the data the client wants. A reverse proxy serves as an intermediary that blocks your web server from communication with the internet's users.




From a consumer's point viewpoint, or a user's viewpoint, interfacing with reverse proxy isn't different from connecting to the server in its own. It's functionally identical to the web server, and the client isn't able to tell the difference. The client can make a request for the resource and it receive it, with no extra configuration required by the user.




Reverse proxies grant features like:




Security centralized for web servers.


Directing incoming traffic according to rules you design.


Added functionality for caching.




Although centralized security is an advantage of both reverse and forward proxy services, reverse-proxies perform this for the web server layer but not to the client layer. instead of having firewalls installed on the layer of web servers which might comprise multiple servers with different configurations, the bulk of the firewall security is centered on the layer of reverse proxy. Additionally, getting rid of the necessity of connecting to a firewall and responding to requests from clients who do not have web servers lets them concentrate on addressing the needs of their clients.




If there are multiple servers hosting through a reverse proxy the reverse proxy determines which requests go on which server. Multiple servers may be providing the exact same service, but having different resources, or a combination of the two. They can use the HTTP protocol in the same way as traditional web servers however, they could also be equipped with applications server protocols such as FastCGI. It is possible to set up a reverse proxy to direct customers to specific server depending on the requested resource, or to observe specific rules regarding traffic load.




Reverse proxy solutions can also benefit from their positioning on top of web servers through the caching feature. Large static files can be arranged using caching rules to prevent hitting web servers every time you request. Certain solutions allow the server to serve static files directly without having to connect to a web server in any way. Additionally the reverse proxy is able to handle compression of these assets.




The popular Nginx web server can also function as a well-known reverse proxy solution. While it's real that Apache web server has a reverse proxy features but it's a different option. Apache and not the default option. Nginx was originally designed to focus on reverse proxy functionality.



Distinguishing Forward Proxy from Reverse Proxy Use Situations



Because "forward" and "reverse" are both associated with a sense of directionality and inaccurate comparisons with "incoming" and "outgoing" traffic These labels can confuse because both types of proxies manage requests and responses. An alternative approach to distinguish between reverse and forward proxy services is to consider the requirements of the application you're creating.




Reverse proxy is a crucial element when designing an infrastructure to connect web applications to the internet. They are your web servers in any interaction with the internet.




Forward proxy software is useful when they are placed in front of clients to use for personal purposes, or in a work setting. They can be used to represent your client's traffic when you use the internet.




A case-based approach to distinction instead of focusing only on the most common names will help you not get confused.



Conclusion



This article defined what an "proxy" is with the two most common types of them being the forward and reverse proxy. Practical applications and a discussion of beneficial features were used to differentiate forward proxies and reverse proxy. If you're interested exploring how to implement proxies you should check out our guide on how to configure Nginx as a web server and reverse proxy on Apache on an Ubuntu 20.04 server.



Should you have any queries relating to wherever and also the way to make use of Proxy Sites (robotech.com), you are able to email us from our own website.