Through a DNS poisoning attack, a hacker replaces the address of a legitimate website with a fake one. Once achieved, that hacker can steal delicate knowledge, like passwords and numbers of an account. The hacker can also deny loading your site, which is spoofed.
DNS cache – What does it mean?
The DNS cache is a kind of temporary cache memory that DNS resolvers and different devices have. Inside that memory are stored earlier applied DNS records of searched domain names. These records hold the IP addresses (IPv4 or IPv6) of the domain names and their subdomains, also data about their email server, information for their services, authentication and verification data, and more. All of the information is going to be stored inside the DNS cache. As we mentioned, it is going to be only for a particular amount of time which is defined by the TTL (Time to Live) value that each DNS record has.
Nobody can deny how amazing the Internet is! But it’s the result of a lot of developments and smart creations. So every time it improves somehow, the reason is, a technology or group of technologies behind it have really achieved the next level.
What is TCP/IP?
TCP/IP is a combination of two protocols, the Transmission Control Protocol and the Internet Protocol. It is a set of rules that are crucial for everyone involves to communicate within and across networks.
Time is a factor permanently present in our lives. It can be stressful, but it’s an efficient way to organize and control different aspects. The idea of chaos sometimes sounds exciting, but being realistic, it’s not viable when it’s about keeping a network running smoothly. That’s why TTL exists!
TTL, or time-to-live, is a mechanism to define the period of time for data to keep living, meaning being valid, stored, or to keep traveling on computers or networks. Once the TTL value defined by the administrators to those data expires, they get discarded.
Have you ever thought about the differences between FTP vs HTTP, and why do we use HTTP for the World Wide Web? Now you will have your answer.
What is FTP?
FTP stands for File Transfer Protocol, and it is a protocol that allows file transfer between two different hosts (devices) using the TCP/IP protocol. It is using the client-server model, where one of the hosts is called a remote host (server) and needs FTP software to be a server, and the other is called a local host (client) with FTP client’s software. Both of them need to be connected and configure to use the FTP protocol for communication.
FTP is used for:
IP address – What is it?
The IP (Internet Protocol) address helps with identifying most of the elements inside a network. Each device, laptop, computer, smartphone, etc., requires an IP address to successfully connect to a private network. Also, when we are talking about connecting to the Internet, we have the same case. The user is receiving a public IP address provided by an Internet service provider (ISP). For the purpose of operating accurately, servers also have a public IP address.
Cloud computing is the distribution of different computing services or resources (storage, networking, analytics, software, intelligence, servers, disaster recovery technology, security, etc.) through the Internet.
Cloud computing changed the model of hiring these services. Clients don’t have to buy, own and maintain data centers and servers. Instead, they can have access to the specific services they require on-demand. As a result, clients’ operation costs can be lowered, and they can access an efficient and modern infrastructure.
Benefits of cloud computing.
Pretty much all the time, there’s an interaction between the browsers and servers. This communication is triggered every time someone in the world requests a website. Servers have their own way of informing the status of that request: the HTTP codes. There are five HTTP code categories. Statuses are expressed through three numbers. The first number indicates the type of status.
- 1XX, informational responses.
- 2XX, successful responses.
- 3XX, redirects.
- 4XX, client errors (like error 404).
- 5XX, server errors.
What is error 404?
Error 404 means “not found”. It is a type of HTTP response status code that points to the category of “client errors”.
Enterprise DNS (domain name system) is a high-level DNS service specially focused on large enterprises with big needs. Enterprise DNS implementation offers to resolve internal and external requests for enterprises in an efficient, scalable, secure, automatable, and centrally managed way. Enterprises need a reliable DNS architecture to operate, bullet-proof security, redundancy, speed, 100% uptime… and more capabilities that domain registrars’ DNS can’t guarantee exclusively for a single client.
Today we are going to talk about Cloud Computing. It is the practice of using outside servers that are connected to the Internet for storing data, managing the data, information processing, and other tasks. The most popular types of Cloud Computing are SaaS, PaaS, and IaaS. Let’s see the differences.
When you have your own server hosted on-site, you will be responsible for all of the following categories: