Month: March 2022

What does FTP mean?

FTP – what does it mean?

FTP, or File Transfer Protocol, is a standard communications protocol for transferring data between devices across a network. A TCP/IP (Internet) connection is also available between the two. FTP is a network protocol that connects a user to a server and allows users to download files, pages, or applications that are available on other services. File Transfer Protocol is usually using by the user when they need to download data to their personal device.

It’s worth noting that File Transfer Protocol does not use encryption. Instead, it exclusively uses cleartext users and passwords for authentication purposes. Unfortunately, this leaves information delivered via FTP vulnerable to simple impersonation and other forms of attacks. There is, however, SFTP (Secure File Transfer Protocol), which can allow secure file transfer.

Benefits of using it

FTP is absolutely advantageous. Here are some of its benefits:

  • You can use File Transfer Protocol to transport huge files.
  • Also, you can submit multiple folders containing files simultaneously to expedite the transfer process.
  • You can re-establish an interrupted File Transfer Protocol connection.
  • And in addition, the transfers of schedules are possible.

FTP applications

  1. You can collect data from linked devices — The number of IoT devices is growing, and all of them, including laptops, PCs, and tablets, are connected to the Internet. Without the need for human interaction, you may obtain all of the data and transfer it via a wireless network. The data transfers on a regular basis when automated FTP transfers are set up.
  2. Business of e-commerce – Online shopping is convenient and offers numerous advantages. However, a lot is going on behind the scenes. Secure File Transfer Protocol (SFTP) aids e-commerce businesses by transmitting data to various critical business systems, such as analytics. The company will be able to continue moving forward in this manner.
  3. A content distribution network (CDN) – is a system that allows you to share your content with others. Large media content organizations, as well as various radio and television shows, require reliable data delivery. This ensures that presentations are broadcast on time. FTP’s ability to transport large amounts of data is advantageous to them.

FTP vs HTTP

HTTP stands for Hypertext Transfer Protocol, and it is a protocol for loading documents via hyperlinks on the Internet (World Wide Web). It also follows the same client-server concept as FTP, in which a client sends a request, and the server responds with the content or action requested. The most common HTTP requests are GET (for getting a specific resource) and POST (for posting text or a file).

Let’s look at the differences and similarities between FTP and HTTP. You might be quite surprising at how much the two network protocols have in common.

  • FTP and HTTP are both types of network protocols.
  • FTPS and HTTPS are secure versions of FTP and HTTP that use data encryption.
  • Both FTP and HTTP are still in use on the Internet and can be used to transmit files.
  • The TCP protocol is used by both FTP and HTTP but on different ports.
  • After establishing a connection, the purpose of File Transfer Protocol is to transmit files from a remote host, while HTTP is used to browse the web after establishing a connection.
  • Because HTTP can download a file in pieces and speed up the transfer, FTP usually is slower than HTTP. In addition, if there are several files, the FTP must re-establish the connection between each one, which takes time.

Conclusion

You now understand what FTP is and what it does. It is a well-known file-exchange protocol. Of course, it isn’t perfect, but there are ways to improve its security and use it.

Recursive DNS server: How does it work?

Recursive DNS server is a crucial element of the Domain Name System. If you want to learn more about it, you are on the right page. So let’s begin.

DNS – what does it mean?

The Domain Name System (DNS) is what allows domain names to be translated into IP addresses. This is the common language that machines use to communicate with one another.

Using the Internet before DNS was a more challenging experience. To get to the domains you want to visit, you had to type IP addresses. This necessitated typing large numbers sequences into the browser. It was a time-consuming task. In addition, long digits were difficult to remember, and the odds of making a mistake were high.

It is easier to type example4domain.org weather than 214.136.89.63.

DNS was intended to make this operation as straightforward as possible. Simple domain names are easy to remember. DNS tells machines what domains to look for in their language.

The definition of Recursive DNS server

A Recursive DNS server or DNS resolver is an expert in searching. Yes, it’s the one that looks for the information needed to respond to DNS queries from users.

It’s an essential and efficient part of the DNS system. Recursive is derived from the word recursion. In computing, a solution or a specific process will repeat as many times as necessary to achieve a goal. And that description closely resembles how a Recursive DNS server works.

When a user requests a domain using a browser, a DNS resolver is the first stage to find the domain’s corresponding IP address. It can be quick and straightforward to obtain or require additional steps and effort. On the other hand, the server will not stop looking for it until it finds it. Then it will deliver it to the browser, which will then load and access the asked domain for the visitor (device).

How does Recursive DNS server work?

The recursive DNS server has two modes of operation. They are the following:

The first way is thought to be much simpler and speedier. The Internet address(IP) is stored in its cache memory. These servers can save the information in their cache for a specific period of time. It is up to the administrators to decide how long they should keep it. They can use the time-to-live (TTL) to evaluate whether they need more or less time. Actually, it’s all reliant on the administrators’ plan.

When the recursive DNS server receives the query, it will first look for the IP address in its cache memory. The assignment is complete if that information is still available there and the TTL has not yet expired. It’s advantageous since the answer is quick, and the recursive DNS server doesn’t have to look for information on other servers.

The second way of the search will take a little longer to finish. It occurs when the cache’s TTL has passed its expiration date. As a result, the IP address is no longer accessible. On the other hand, the recursive DNS server goes a long way toward obtaining the needed information. It travels from the root server to the TLD (Top-Level-Domain) server to the authoritative server, which is the one that can answer the question.

Conclusion

In conclusion, we can say that recursive DNS servers are essential for making the resolution process and the Internet, in general, more flexible. As a result, their numbers are significant, and their presence is widespread. Recursive servers are used by every Internet Service Provider (ISP), and they aren’t just for ISPs. DNS service providers, domain registrars, and various network providers are all examples of DNS service providers.