What is meant by network security?

What is network security?

Network security generally refers to all the measures taken to prevent system security problems. To avoid issues in computer networks, we take some steps called network security. Or have the hardware. However, it should be noted that some of these network security features can also be provided by Roles.

What are the solutions in this security?

Below are some this solutions that can prevent any dangerous data from being compromised and entering the system.

- Access control

- Antivirus and antimalware software

-  Application security  - Behavioral analytics

- Data loss prevention

- Email security

- Firewalls

- Mobile device security

- Network segmentation

- Security information and event management

- VPN stands for Virtual private network

-  Web security  - Wireless security

- Access control:

It should be noted that, in general, it is better than in all large and small networks or private and public networks. It is better to control and manage all accesses. If we do this, we can get some infection. Prevent your network, and in other words, we can say that working and restricting access to the it is one way to take care of the network and increase its security. If we do this, not all people will be able to access the network, which is why  we can improve network security. Not everyone can access essential data and resources by restricting access to the network and the system. They will have access to the data and resources allowed to them. In this way, system administrators can Have access to all resources. Therefore, it can be said that one of the ways to protect the network and increase its reputation is to limit the access of all people and then manage.

- Security software to combat malware and viruses:

The use of some security software such as antivirus and anti-malware is essential, and we must use them to take care of the system and its data to some extent. It is worth noting that some roles within this type of security software are being updated and become stronger by updating, and then they can take care of their systems and data. The function of this type of security software is to prevent the entry of some viruses and malware to prevent some security problems for the data and system, such as theft of essential data. Some malware and viruses may act cleverly trying to sneak into the system, in which case antiviruses, which are software designed and developed to increase network security ( in Slovak:  softvér navrhnutý a vyvinutý na zvýšenie bezpečnosti siete  ) and detect and counteract viruses, Prevent them from logging in.

- Software Security:

As you know, there are many different types of software that each of these  softwares should be designed and developed based on some security principles. There is web-based software, computer system software, mobile software, etc. Each of which is designed and developed to meet the user's needs, and developers should observe security principles when designing and developing them. Most security issues with software can be seen as bugs. And after identifying it, it is better than the appropriate solutions to take the necessary measures to deal with them.

- Performance analysis and criteria determination:

After normal and permissible behaviors at the network level are identified, based on them, some appropriate criteria can be developed to control normal and suspicious functions. Once we have established some requirements for maintaining the network's performance, monitoring, and review of the this should be done continuously.  DLP, which stands for Data Loss Prevention, is essential for preventing data and information from being leaked out of the network. The network support team should use some solutions to prevent this from happening and causing the transmission to leak. And necessary its data is not transferred outside the network.

- Email Security:

Emails are one of the ways that users can communicate. Of course, it should be noted that emails, in addition to being a means of communication, can also be a way for hackers to infiltrate the system and network. It should be noted that some hacks and attacks such as phishing attacks and social engineering can also be made through emails, so it is better to ensure the security of emails.

- Use of firewalls:

One of the best tools for checking and analyzing data packets in the network is to use firewalls that examine all the data packets that want to enter the system and if the data is contaminated from entering them. The system prevents them. Otherwise, they are allowed to enter. Firewalls can be software or hardware or even a combination of the two. You should check the type of firewalls and recognize them before choosing the appropriate type according to the needs of the network and system.

- Phone security:

Since with the advancement of technology, many platforms are done on phones, and the phone is also a personal smart device, we must be serious in  providing security so that we can protect the data and information in our phone. It is easier for hackers to infiltrate phones, and for this reason, we must provide security.

- Web Security:

Some websites are malicious, and by entering them, our system may have a problem, and hackers may steal the data. For this reason, it is better to spam them in the face of these types of websites to prevent intrusion into the system and the destruction and theft of its data.

What are the seven layers of OSI?

To better understand the concept of this, it is better to get acquainted with the basic concepts in the network beforehand.  OSI is one of the standards used to describe network structure.

Seventh layer Application Layer:

This layer has the task of giving the user request to the network to the system. For example, we can say that if we enter the site address in the browser, this request will be processed by this seventh layer.

Layer 6 Presentation Layer:

The task of this layer is to interpret the requests made in the upper layer, the seventh layer, to the other lower layers. In other words, we can say that this layer can prepare requests for processing and execution on the this. This network layer does the interpretation of requests, encryption, compression, etc.

Fifth layer Session Layer:

The task of this layer is to combine requests and announce them to the service. For example, we can say that this layer is responsible for requesting a connection to HTTP or HTTPS services.

Fourth layer Transport Layer:

The task of this layer is to transfer the strings at the network level. In other words, we can say that requests in the network context to different services can be in the form of a set of requests in the form of strings.

Third layer Network Layer:

This layer also has the duty and responsibility to deliver the data to the desired service and then get confirmation. In other words, it can be said that this layer is like the post office that manages the shipments.

Second layer Data link Layer:

All the identity information of the devices that are connected is stored in this layer to communicate between them.

First layer Physical Layer:

The type of connection and communication methods are specified in this layer. The type of hardware and software connection of the systems is specified in this layer.

In this article, I talked about the concept of  network security to protect the network and its data. We take some measures called network security. To prevent system theft or problems when connecting systems and to communicate between them to transfer data, we must take the necessary measures to ensure this.