A Quick Recap Of Key Computer Network Security Concepts

Security is a highly critical aspect of any computer network. Any online website or application, be it a college essay help online service, a professional essay editing service or an essay rewriter tool, requires and implements acute network security measures to prevent intrusion & exploitation. Therefore, any computer networking professional or aspirant must possess solid network security fundamentals.

This article briefly summarises computer network security fundamentals from actual computer networking help experts. Read on to refresh your network security concepts.


Chief Computer Network Security Concepts

Network security has three fundamental goals à

  • Confidentiality = Preventing the unauthorized usage or disclosure of information
  • Integrity = Safeguarding the accuracy and completeness of data and information
  • Availability = Continual accessibility and availability to authorized users

Access control is one of the primary avenues of computer network security. Access control is all about implementing mechanisms for permitting or denying the usage of an object or source of information. Authentication, authorization and accountability are the three essential services offered by access control systems.

Authorization vs Authentication

Many learners often get confused between authorization and authentication.

Simply put, authorization defines whether a party has the authority to perform specific actions while authentication identifies a party’s credentials.

There are multiple authorization concepts, with some of the key ones being:

  • Authorization Creep = Term used to define situations when users possess high access privileges within an organization;
  • Default Zero = The default access status of any new party;
  • Need-to-know Principle = a minor level of privilege where a party is given access to information when they need it absolutely;
  • Access Control Lists = List that records the particulars of access of several parties.



Accountability is another crucial security goal wherein actions can be traced back to an entity. For example, senders cannot deny sending some information, receivers can not deny receiving it, and users cannot deny performing a specific action.

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Security systems must define and determine the accountability for all actions occurring in a network. This is vital for non-repudiation, deterrence & detection of intrusion, prevention of attacks, fault isolation, after-action recovery, and subsequent legal action.

Let us now take a quick look at the general threats that can assail a network.


Common Network Threats


  • Masquerading àAn entity posing and claiming to be another entity
  • Eavesdropping àUnauthorized intrusion or access of communications
  • Authorization Violation àUnauthorized usage of a service or resource
  • Modification or Theft of Data àStealing or unauthorized alteration of data
  • Denial of Service àPreventing authorized parties from accessing or availing of a service
  • Forgery of Information àCreation of new (generally false) information without authority
  • Sabotage àAction that impairs the proper functioning and/or availability of services or systems


And, that’s all the space we have for today. Hope this little article was of some help to you. If you require assistance with computer networking, always seek help from genuine all assignment help experts from reputed services.

Source: https://truxgo.net/blogs/53445/343349/a-quick-recap-of-key-computer-network-security-concepts

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