Public Cloud VS. Private Cloud; What is the difference?

nedjelja , 23.05.2021.

Over the years, cloud computing has become increasingly popular in the business and IT communities. Companies today understand the future of cloud computing better than ever and want to integrate it into their operations.

The conversation between private cloud and public cloud has been going on for many years. Before deciding which cloud is right for your business or which part of the discussion, you need to understand the difference between private cloud and public cloud, as well as the basics of cloud computing.

cloud computing?

In short, a cloud is a collection of servers that host databases and software that can be accessed through the Internet. These servers are located in data centers around the world. Companies can eliminate the need for tasks such as maintaining and managing servers.

Now that you have a basic understanding of cloud computing, let us explain the two most important cloud delivery models (private cloud and public cloud). There are other types of clouds (hybrid cloud and multi-cloud), but we will focus on these two.

What is a private cloud?

A private cloud, also known as enterprise cloud or internal cloud, is a deployment model in which resources are only available to dedicated organizations. In this type of model, the infrastructure is hosted in the company's internal network or in a data center operated by a cloud service provider.

This allows grassroots organizations to freely customize the components they deem appropriate, such as network, hardware, and storage. It is popular in organizations that deal with sensitive data and like the adaptability and scalability that comes with it. The benefits of a private cloud One of the main benefits of a private cloud is its incredible data security and compliance.
These are some other important benefits provided by private clouds.

The private cloud gives companies the freedom to control and personalize their data. Central structure, whatever you want. This makes monitoring easy and effective.

Optimization and reliability-Private clouds enable companies to optimize their infrastructure components to improve performance. Private clouds are also reliable. Compared with public clouds, private cloud users tend to enjoy more features, such as security tools, monitoring, and automation.

Performance-The public cloud is designed for enterprises with high computing needs by providing space for infrastructure updates. They are expensive compared to public clouds. Components such as software licenses, hardware, network infrastructure, and labor costs add to the cost.

This element limits the public cloud to established companies.Managing and deploying a private cloud is certainly not an easy task. The company must hire a skilled team to maintain the infrastructure, which will increase operating costs. However, you can solve this problem by hiring a hosted cloud provider to do this work. Restricted remote access-Due to the security-focused approach, remote access is restricted, which in some cases can cause performance degradation.

What is a public cloud?

In contrast to private clouds where companies use resources, resources in the public cloud model are distributed among several independent tenants. In this model, cloud services can be provided to everyone via the Internet and provided by third parties.

Using this model, companies and developers can access powerful computing power, storage, infrastructure, and software at an affordable price. Benefits of public cloud The public cloud deployment model has many benefits, but most are cheap.Economy (reduction of equipment and maintenance costs) makes it popular among start-ups and small and medium enterprises. Most vendors provide disaster recovery functions, which are traditionally expensive to perform.

Provides a high degree of scalability and reliability-scalable at any time. The public cloud is easy to use. In terms of configuration and management, the disadvantages of public clouds are as follows are some of the disadvantages and challenges you may encounter when using public clouds: Data compliance and security issues: For companies that want to incorporate cloud computing into their workflow, This is a major problem.

Using this model, the company must make every effort to implement its security strategy. If not handled properly, this can be expensive. -Put on a model that seems convenient but necessary

What is DDOS attack?

nedjelja , 16.05.2021.

A distributed denial of service (DDoS) attack is a malicious attempt to disrupt the target server, service, or normal communication on the network by overloading the target or its surrounding infrastructure with Internet traffic. Computer systems hacked are the source of attack traffic. Computers hacked include computers and other network resources, such as IoT devices. At a higher level, a DDoS attack is like an accidental traffic jam, blocking the road and preventing normal traffic from reaching your destination.

How does a DDoS attack work?
DDoS attacks are carried out on computer networks connected to the Internet. These networks consist of computers and other devices (such as IoT devices) infected with malware, so they can be controlled remotely. These individual devices are called bots (or zombies), and a group of bots is called botnets. ...Once the botnet is created, the attacker can direct the attack by sending remote commands to each botnet. When a botnet attacks the victim's server or network, each bot will send a request to the target's IP address. This may overload the server or the network and cause the denial of normal traffic services.Since every bot is a legitimate Internet device, it is difficult to distinguish attack traffic from regular traffic.

How to identify DDoS attacks
The most obvious sign of a DDoS attack is a sudden slowdown or unavailability of a site or service. -This reasonable increase in traffic may cause similar performance problems. Therefore, further investigation is usually required.
Using traffic analysis tools, you can find some obvious signs of DDoS attacks: suspicious traffic from a single IP address. Or IPA user traffic flows share a single behavior profile, such as device type, geographic location, or web browser version. Requests for specific pages or endpoints have increased inexplicably.
It looks unnatural (every 10 minutes). There are other more specific signs of a DDoS attack, depending on the type of attack. Different types of DDoS attacks target different components of the network connection. To understand how different DDoS attacks work, you need to know how to establish a network connection.
Network connections on the Internet consist of many different components or "layers." Just like building a house from scratch, each layer of the model has its own purpose. Although almost all DDoS attacks will overload the data traffic of the target device or network, the attacks can be divided into three categories: the attacker can use one or more different attack vectors or attack cycles in response to the response measures taken to achieve the target.
Attack (belonging to the seventh level of the OSI model). The purpose of these attacks is to exhaust the target's resources to create a denial of service. The goal of the attack is to create a web page on the server and provide a level of service in response to HTTP requests.
Creating a single HTTP request on the client is computationally expensive, but for the target server, the response may be expensive, because the server usually downloads multiple files and requests data to create a web page.
Layer 7 attacks are difficult to defend because it is difficult to distinguish malicious traffic from legitimate traffic.
HTTP floods. In this attack, updates are downloaded multiple times to many different computers simultaneously in a web browser. A large number of HTTP requests flooded the server and caused a denial of service.
This type of attack ranges from simple to complex. The deployment can access URLs that have the same IP range as the attacker, sender, and user agent.
The sophisticated version can use a large number of attacking IPs and use random senders and user agents to locate random URLs.
The target of protocol attacks: Protocol attacks, also known as brute force attacks, cause service interruption due to excessive consumption of server resources and/or network equipment resources such as firewalls and load balancers.
Protocol attacks use weaknesses in the third and fourth layers of the protocol stack to make the target unreachable.
The SYN process is similar to receiving inquiries from employees of the purchasing department from the front desk of a store. After the employee receives the request, he picks up the package and waits for confirmation, and then puts the package to the front desk.
Then, the workers got more. Unconfirmed package requests until they no longer carry packages because