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Network Security

  • Difficulty Level : Medium
  • Last Updated : 22 Oct, 2021

Network Security refers to the measures taken by any enterprise or organisation to secure its computer network and data using both hardware and software systems. This aims at securing the confidentiality and accessibility of the data and network. Every company or organisation that handles large amount of data, has a degree of solutions against many cyber threats

The most basic example of Network Security is password protection where the user of the network oneself chooses. In the recent times, Network Security has become the central topic of cyber security with many organisations inviting applications of people who have skills in this area. The network security solutions protect various vulnerabilities of the computer systems such as: 

1. Users
2. Locations
3. Data
4. Devices
5. Applications 

Network Security : Working 
The basic principle of network security is protecting huge stored data and network in layers that ensures a bedding of rules and regulations that have to be acknowledged before performing any activity on the data. 
These levels are:  

1. Physical
2. Technical 
3. Administrative 

These are explained as following below. 

  1. Physical Network Security: 
    This is the most basic level that includes protecting the data and network though unauthorized personnel from acquiring the control over the confidentiality of the network. These includes external peripherals and routers might be used for cable connections. The same can be achieved by using devices like bio-metric systems. 
  2. Technical Network Security: 
    It primarily focuses on protecting the data stored in the network or data involved in transitions through the network. This type serves two purposes. One, protection from the unauthorized users and the other being protection from malicious activities. 
  3. Administrative Network Security: 
    This level of network security protects user behavior like how the permission has been granted and how the authorization process takes place. This also ensures the level of sophistication the network might need for protecting it through all the attacks. This level also suggests necessary amendments that have to be done over the infrastructure. 

Types of Network Security: 
The few types of network securities are discussed as below : 

  1. Access Control: 
    Not every person should have complete allowance to the accessibility to the network or its data. The one way to examine this is by going through each personnel’s details. This is done through Network Access Control which ensures that only a handful of authorized personnel must be able to work with allowed amount of resources. 
  2. Antivirus and Anti-malware Software: 
    This type of network security ensures that any malicious software does not enter the network and jeopardize the security of the data. The malicious software like Viruses, Trojans, Worms are handled by the same. This ensure that not only the entry of the malware is protected but also that the system is well equipped to fight once it has entered. 
  3. Cloud Security: 
    Now a day, a lot many organisations are joining hands with the cloud technology where a large amount of important data is stored over the internet. This is very vulnerable to the malpractices that few unauthorized dealers might pertain. This data must be protected an it should be ensured that this protection is not jeopardize over anything. Many businesses embrace SaaS applications for providing some of its employees the allowance of accessing the data stored over the cloud. This type of security ensures in creating gaps in visibility of the data. 
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