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A reverse proxy is a server that is placed on the server side and directs the requests from the clients to the main servers. In large databases, we usually have multiple servers that need a kind of management to direct the coming requests to the appropriate server that contains the proper data for the client’s request. Reverse proxies are typically implemented to help increase security, performance, and reliability. In this article, we will first see what a proxy server is and then take a look at the different kinds of proxy servers. Afterward, we will focus on the reverse proxy, its pros, and cons, and see when and where we need to use the proxy servers. If you are new to IT and want to learn more about web servers and different articles on these subjects, feel free to take a look at our blog and read the different documents that we have provided about web servers. What is a Proxy server? Oftentimes, when we talk about a proxy server, we are referring to the forward proxy server. A forward proxy also known as a web proxy is placed in front of a group of a client machines. When those computers make requests to sites and services on the Internet, the proxy server intercepts those requests and then communicates with web servers on behalf of those clients, like a middleman. Below, you can see the forward proxy in comparison with the reverse proxy.In standard Internet communication, the client computer would reach out directly to the origin server, meaning that the client sends requests to the origin server and the origin server responds to the client. When a forward proxy is in place, The client will instead send requests to it ( the forward proxy), which will then forward the request to the origin server. The origin server will then send a response to the forward proxy, which will forward the response back to the client’s computer. Why would anyone add this extra middleman to their Internet activity? There are a few reasons one might want to use a forward proxy:1. To avoid governmental or institutional browsing restrictions: Some governments, schools and other organizations use firewalls to give their users access to a limited the version of the Internet. A forward proxy can be used to get around these restrictions, as they let the user connect to the proxy rather than directly to the sites they are visiting.2. For filtering certain contents: Conversely, there are circumstances in which proxies are set up to block a group of users from accessing to content or sites. For example, a school network might be configured to connect to the web through a proxy which enables content filtering rules, refusing to forward responses from Facebook and other social media sites.3. To be anonymous online: There are times when users want to protect their identity. In some cases, regular Internet users simply desire increased anonymity online, but in other cases, Internet users live in places where the government can impose serious consequences on political dissidents. Criticizing the government in a web forum or on social media can lead to fines or imprisonment for these users. If one of these dissidents uses a forward proxy to connect to a website where they post politically sensitive comments, the IP address used to post the comments will be harder to trace back to the dissident. Only the IP address of the proxy server will be visible.How does a reverse proxy work? As mentioned earlier at the beginning of the article, the reverse proxy server is placed on the server side and intercepts the requests from the clients. This is different from a forward proxy, where the proxy sits in front of the clients. With a reverse proxy, when clients send requests to the origin server of a website, those requests are intercepted at the network edge by the reverse proxy server. The reverse proxy server will then send requests to and receive responses from the origin server. If we want to compare the forward proxy server with the reverse proxy server, we should put it this way; a forward proxy sits in front of a client and ensures that no origin server ever communicates directly with that specific client. On the other hand, a reverse proxy sits in front of an origin server and ensures that no client ever communicates directly with that origin server.Why do we use Reverse Proxy? There are multiple reasons why we use the reverse proxy server:1. Load balancing and Global Server Load Balancing (GSLB): A website with millions of users every day from all around the globe in a certain country, may not be able to handle all of its incoming site traffic with a single origin server. Instead, the site can be distributed among a pool of different servers, all handling requests for the same site. In this case, a reverse proxy can provide a load balancing solution that will distribute the incoming traffic evenly among the different servers to prevent any single server from becoming overloaded. In the event that a server fails completely, other servers can step up to handle the traffic.2. Security: With a reverse proxy in front of the origin servers, a website or a web service will never have to reveal the IP address of its origin web servers and this can protect it from the attackers who want to leverage a targeted attack against them, such as a DDoS attack. Instead, the attackers will only be able to target the reverse proxy, such as Cloudflare’s CDN, which will have tighter security and more resources to fend off a cyber attack.3. SSL encryption: Encrypting and decrypting SSL (Secure Sockets Layer) and its successor TLS (Transport Layer Security) communications for each client could be computationally inefficient and cost-effective if done with an origin server. A reverse proxy can be configured to decrypt all incoming requests and encrypt all outgoing responses, freeing up valuable resources on the origin server.4. caching: Caching is the process of storing copies of files in a cache, or temporary storage location so that they can be accessed more quickly. A reverse proxy can also cache content, resulting in faster performance. For instance, if a user in London visits a reverse-proxied website with web servers in Silicon Valley, the user might actually connect to a local reverse proxy server in London, which will then have to communicate with an origin server in Silicon valley. The proxy server can then cache (or temporarily save) the response data. Subsequent London users who browse the site will then get the locally cached version from the London reverse proxy server, resulting in much faster performance.Conclusion In this article, we have got familiar with the two types of proxy servers including the forward and reverse proxy servers. The proxy servers are mostly referred to the forward type. However, reverse proxy servers are also very common these days considering that we have so many websites with many users and high traffic. Not to mention that so many important web services and websites need a security layer for encryption and decryption. Moreover, caching makes the use of the origin servers much more efficient using the reverse proxy servers. Download this Article in PDF format Arashtad Custom Services In Arashtad, we have gathered a professional team of developers who are working in fields such as 3D websites, 3D games, metaverses, and other types of WebGL and 3D applications as well as blockchain developemnet. 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The Many Different Types Of Proxy Servers

A Proxy Server has a ton of different uses and they work in many different ways. In this article I am going to explain the different ways in which a Proxy Server can function and also the different ways they can be used.

The three different ways that these proxies work are as follows:

A Reverse Proxy acts as an intermediary between the internet and the origin servers helping the origin servers. It makes the client side sites think that all of the requests are coming from itself when in fact they are coming from one or many other servers and all routed through it. They are referred to as a reverse proxy’s because it is helping the associated servers instead of the associated clients. Reverse proxies have many advantages including: act as an application fire wall to mitigate attacks from malware etc., it can act as a load balancer by distributing info to multiple different servers, it can compress content thereby optimizing performance, they can hide the existence of the origin servers.

Open Proxy (AKA Transparent Proxy) is a caching server that is accessible by any internet user. There are tons of open proxies in existence because they are the most common and they are widely used to conceal your IP address. When someone is using an open proxy they become anonymous and therefore they are popular with people wanting to do illegal things as it is harder for them to get caught. The main benefit of open proxy servers is the anonymity, there are some draw backs too as there is a higher risk of malware infection, they can run very slow as many people are probably trying to download large file though them.

A Forward Proxy (normal type) regularly caches all requests. It works by listening for the clients requests for connectivity to a separate port. After the server receives the request and gets the content it will store a cached copy of the content on the server and then forward the content on. If the same page is then requested again by anyone then it will serve the cached copy instead of sending another request. This can significantly decrease page load time thereby making it much more efficient.

Now you know the three main ways proxies work you may like to know all of the different variations of them and ways which they can benefit you.

Free web proxies: These are websites that have a proxy service embedded in it so you just go to the site and then surf the web from their browser. This will rout all of the internet traffic through their browser and make you anonymous but you should also be warned about their use. By using this free alternative you are placing all of your trust in the site you are going through, they can watch everything you are doing just as much as a hacker when you don’t use one. Your traffic is not encrypted either so your internet service provider (ISP) can still see everything you are doing and they are often times quite slow.

Free Proxy List: These are much like the Free Web Proxy except that you don’t use an embedded browser. You search the net for the list and then you configure your browser to use the proxy address and port number. This will make it look like your IP address is the IP of the Proxy address and is a little better than the free web one although they are also slow and very prone to breaking frequently. Because they often break they are not that useful for downloading large files and streaming as you will not finish it most of the time. There are also paid versions of proxy lists that are much better as less people are using them but they still break unfortunately.

VPN: A Virtual Private Server (VPN) is a paid service which is the best of the best. By paying a subscription fee you have access to your own private network of servers around the world and can access any of them with a click of the mouse. All of the internet traffic is fully encrypted and you are completely anonymous. The connections are very strong and in most cases very quick although quality varies greatly between companies so make sure you get a reputable service. You can easily stream video and large files without a glitch and some companies even boast that it will enhance online gaming by making your connection quicker to the game server thereby giving you an advantage.

So now you know the different types of proxies that are out there you will be able to make an informed decision about what suits your specific needs. If you would like to know about the best VPN’s and Proxy Servers on the market then please go to http://thebestproxyserver.com to see the comparisons.

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