What is Network Security? Network Security Defined, Explained, and Explored

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We live in the news age. Today businesses are more advanced digitally than ever, and the security position of organizations must also be enhanced as technology improves. Now, the security of network systems is an essential concept, with many devices communicating over wired, wireless, or cellular networks. In this article, we will examine the key features of network security.

What is Network Security?

The concept of network security covers a variety of technologies, equipment, and processes. In its simplest terms, it is a series of rules and settings designed to protect the integrity and confidentiality of computer networks and data accessible through software and hardware. Every organization requires a certain number of network safety solutions, regardless of size, industry, or infrastructure, to protect it from the ever-growing cyber threat landscape in the wild today.

Network architecture nowadays is complex and faces a constantly changing threat environment and vulnerabilities that attackers always exploit. Such openness can exist in various areas such as devices, data, applications, users, and locations. Therefore, there are many tools and applications currently in use in network security management to address threats and exploitation and regulatory non-compliance. When a few minutes of downtime may cause widespread disturbance and damage to an organization's bottom line and reputation, these safeguards are essential.

How does Network Security Work?

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When addressing network security throughout an organization, there are many levels to consider. Attacks can occur on every layer in your model so that the security hardware, software, and policies for your network have to be designed to address each area. The security of the network typically consists of three different controls: physical, technical, and administrative. A brief description of the various network security types and how each control works is provided here.

Physical Network Security

Physical security controls have been designed to prevent unauthorized workers from physically gaining access to network components such as routers, cable carriers, etc. In any organization, controlled access is essential, such as locks, bio-metric authentication, and other devices.

Technical Network Security

Engineering security checks protect data saved on the network or transiting over or outside the network. Protection is double; data and systems must be protected from unauthorized personnel and protected from malicious employee activities.

Administrative Network Security

The administrative controls on security include security policies and user behavior-controlled processes such as how users are authenticated, access levels, and how IT staff make infrastructure changes.

Different Types of Network Security Devices & Tools

Access Control

You must be able to block access to your network for unauthorized users and devices. Users who are allowed access to a network should be able to work only with the limited amount of resources they have been authorized to use.


By definition, viruses, worms, and trojans try to spread across the network and can lurk dormant for days or weeks on infected machines. Your security effort should do everything in its power to prevent infection and also root out malware that gets into your network.

Application Security

Insecure applications frequently serve as vectors for attackers to access your network. To lock these apps, you must use hardware, software, and security processes.

Behavioral Analytics

You ought to know how normal network behavior is so you can notice abnormalities or violations when they occur.

Prevention of Data Loss

The weakest security link is inevitably human beings. To make sure that employees do not deliberately or accidentally send sensory data outside the network, you must implement technologies and processes.

Email Security

Phishing is one of the most common methods of access to a network for attackers. Email security tools block both incoming and outbound attacks with sensitive data.


The great-grand-parent of the security of the network world might follow the rules that you decide to allow or deny traffic at the border between your network and the Internet. It doesn't rule out the need for thorough defense strategies, but it's still a must.

Detection and prevention of intrusion

These systems scan network traffic to identify and block attacks, usually by correlating signatures for network activity with known attack techniques databases.

Wireless security

Wireless devices have all the possible security defects of any other networked device — but can also connect everywhere, requiring extra scrutiny.

Network segmentation

Segmenting software allows network traffic to be classified in different ways and makes it easier to apply security policies.

SIEM (Security information and event management)

These products aim to collect data automatically from various network tools to provide the data you need for threats to be identified and addressed.

VPN (Virtual private network)

A tool authenticates communication between a device and a secure network and creates a secure, encrypted "tunnel" across the open Internet (typically based on IPsec or SSL).

Web Security

To block web-based threats from using browsers as a vector to infect your network, you need to control internals' web use.

Importance of Network Security

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  • The ability of the organization to operate without obstacles
  • Enables the safe operation of applications on the IT systems of the organization
  • Protection of data collected and used by the organization

Important of Network Security for Business and Consumers

For any organization that works with networked data and systems, network security should be a high priority. Network security can also more efficiently manage network traffic, improve network performance, and ensure the secure sharing of data between staff and data sources to protect assets and data integrity from external exploits. Many tools, applications, and utilities are available to help you prevent attacks and unnecessary downtime on your networks. Network security organizations offer a range of network safety solutions which centralize and simplify often complex processes and ensure that your company maintains robust network security.


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