Network security for preventing and protecting against unauthorized intrusion into networks

Created date: 25-09-2020

Created by : Annamalai


Network security is the practice of preventing and protecting against unauthorized intrusion into corporate networks. As a philosophy, it complements endpoint security, which focuses on individual devices; network security instead focuses on how those devices interact, and on the connective tissue between them.



Network security is any activity designed to protect the usability and integrity of your network and data. It includes both hardware and software technologies. It targets a variety of threats. It stops them from entering or spreading on your network. Effective network security manages access to the network.


What are the different types of network security devices and tools?

  • Access control. ...

  • Antivirus and anti-malware software. ...

  • Application security. ...

  • Behavioral analytics. ...

  • Data loss prevention. ...

  • Distributed denial of service prevention. ...

  • Email security. ...

  • Firewalls.

working of network security :


Network security refers to the set of measures taken to protect a network from various security threats. These set of measures usually involve several policies and practices which aim at preventing unauthorized access to the network. By doing so, they prevent any misuse of the network's resources.


Network security is important for home networks as well as in the business world. Most homes with high-speed internet connections have one or more wireless routers, which could be exploited if not properly secured. A solid network security system helps reduce the risk of data loss, theft and sabotage.


Types of Computer Network: LAN, MAN and WAN


  • Local Area Network (LAN)

  • Metropolitan Area Network (MAN)

  • Wide area network (WAN)

There are three primary areas that security controls fall under. These areas are management security, operational security and physical security controls.


network security key:


The network security key is better known as the Wifi or Wireless network password. This is the password that you use to connect to a wireless network. Each access point or router comes with a preset network security key that you can change in the settings page of the device.


network security tools:


Network Security Tools. Network security tools can be either software- or hardware-based and help security teams protect their organization's networks, critical infrastructure, and sensitive data from attacks. ... These include tools such as firewalls, intrusion detection systems and network-based antivirus programs.


2 types of LAN networks:


In general, there are two types of LANs: client/server LANs and peer-to-peer LANs. A client/server LAN consists of several devices (the clients) connected to a central server. The server manages file storage, application access, device access, and network traffic.

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