What is Network Security

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Cybersecurity Certification Course (37 Blogs) Become a Certified Professional AWS Global Infrastructure Introduction To Cybersecurity What is Cybersecurity? - A Beginner's Guide to Cybersecurity WorldCybersecurity Fundamentals â€" Introduction to CybersecurityCybersecurity Firewall: How Application Security Works?Cybersecurity Threats and State of Our Digital PrivacyHacking Vs Ethical Hacking: What Sets Them Apart? Cybersecurity Concepts What is Cryptography? â€" An Introduction to Cryptographic AlgorithmsSteganography Tutorial â€" A Complete Guide For BeginnersApplication Security: All You Need To KnowWhat is Computer Security? Introduction to Computer SecurityPenetration Testing â€" Methodologies and ToolsWhat is Network Security: An introduction to Network Security Ethical Hacking Basics What is Ethical Hacking? 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All You Need To KnowEverything You Need To Know About Kali Linux Ethical Hacking and Python All You Need to Know about Ethical Hacking using PythonImportant Benefits Of Ethical HackingMacChanger with Python- Your first step to Ethical hackingARP Spoofing â€" Automating Ethical Hacking with Python Cybersecurity Interview Questions Top 50 Cybersecurity Interview Questions and Answers Career Guidance Top 10 Reasons To Learn CybersecurityHow to become an E thical Hacker?Ethical Hacking Career: A Career Guideline For Ethical HackerWhat is Network Security: An introduction to Network Security Last updated on May 22,2019 18.5K Views Archana Choudary Bookmark 6 / 6 Blog from Cybersecurity Concepts Become a Certified Professional We live in an age of information. Businesses these days are more digitally advanced than ever, and as technology improves, organizations security postures must be enhanced as well. Now, with many devices communicating with each other over wired, wireless, or cellular networks, network security is an important concept. In this article, we will explore what is network security and its key features.Lets take a look at the topics covered in this What is Network Security? article: What is network security?What is network security attack?Types of network securityNetwork security jobsWhat is Network Security?Network security is the process of taking preventative measures to protect the underlying networking infras tructure from unauthorized access, misuse, malfunction, modification, destruction or improper disclosure.The Internet has undoubtedly become a huge part of our lives. Many people in todays generation rely on the Internet for many of their professional, social and personal activities. But are you sure your network is secure?There are many people who attempt to damage our Internet-connected computers, violate our privacy and make it impossible to the Internet services. Given the frequency and variety of existing attacks as well as the threat of new and more destructive future attacks, network security has become a central topic in the field of cybersecurity.Implementing network security measures allows computers, users and programs to perform their permitted critical functions within a secure environment.Now that we know what network security is, lets take a look at two major categories of network attacks. Network Security | Introduction to Network Security | EdurekaWhat is network se curity attack?Anetwork attackcan be defined as any method, process, or means used to maliciously attempt to compromise network security.Network security is the process of preventing network attacks across a given network infrastructure, but the techniques and methods used by the attacker further distinguish whether the attack is an active cyberattack, a passive type attack, or some combination of the two. Lets consider a simple network attack example to understand the difference between active and passive attack.Active AttacksAn active attack is a networkexploit in which attacker attempts to make changes to data on the target or data en route to the target.Meet Alice and Bob. Alice wants to communicate to Bob but distance is a problem. So, Alice sends an electronic mail to Bob via a network which is not secure against attacks. There is another person, Tom, who is on the same network as Alice and Bob. Now, as the data flow is open to everyone on that network, Tom alterssome portion o f an authorized message to produce an unauthorized effect.For example, a message meaning Allow BOB to read confidential file X is modified as Allow Smith to read confidential file X.Active network attacks are often aggressive, blatant attacks that victims immediately become aware of when they occur. Active attacks are highly malicious in nature, often locking out users, destroying memory or files, or forcefully gaining access to a targeted system or network.Passive AttacksA passive attack is a network attack in which a system is monitored and sometimes scanned for open ports and vulnerabilities,but does not affect system resources.Lets consider the example we saw earlier:Alice sends an electronic mail to Bob via a network which is not secure against attacks. Tom, who is on the same network as Alice and Bob, monitors the data transfer that is taking place between Alice and Bob. Suppose, Alice sends some sensitive information like bank account details to Bob as plain text. Tom can eas ily access the data and use the data for malicious purposes.So, the purpose of the passive attack is to gain access to the computer system or network and to collect data without detection.So, network security includes implementing different hardware and software techniques necessary to guard underlying network architecture. With the proper network security in place, you can detect emerging threats before they infiltrate your network and compromise your data.Types of network securityThere are many components to a network security system that work together to improve your security posture. The most common network security components are discussed below.Access ControlTo keep out potential attackers, you should be able to block unauthorized users and devices from accessing your network.Users that are permitted network access should only be able to work with the set of resources for which theyve been authorized.Application SecurityApplication security includes the hardware, software, and processes that can be used to track and lock down application vulnerabilitiesthat attackers can use to infiltrate your network.FirewallsA firewall is a device or service that actsas a gatekeeper,decidingwhat enters and exits the network. They use a set of defined rules to allow or block traffic.A firewall can be hardware, software, or both.Virtual Private Networks(VPN)A virtual private network encrypts the connection from an endpoint to a network, often over the Internet. This way it authenticates the communication between a device and a secure network, creating a secure, encrypted tunnel across the open internet.Behavioral AnalyticsYou should know what normal network behavior looks like so that you can spot anomalies or network breaches as they happen.Behavioral analytics tools automatically identify activities that deviate from the norm.Wireless SecurityWireless networks are not as secure as wired ones.Cybercriminals are increasingly targeting mobile devices and apps. So, you nee d to control which devices can access your network.Intrusion Prevention SystemThese systems scan network traffic to identify and block attacks, often by correlating network activity signatures with databases of known attack techniques.So, these are some ways of implementing network security. Apart from these,youll need a variety of software and hardware tools in your toolkit to ensure network security, those are:FirewallsPacket craftersWeb scannersPacket sniffersIntrusion detection systemPenetration testing softwareNetwork security is essential for overall cybersecurity because network is a significant line of defense against external attack.Given that, virtually all data and applications are connected to the network, robust network security protects against data breaches.Network Security JobsWith the widely reported success of popularcyberattacks,like WannaCry and Adylkuzz, companies are paying more than ever to land highly qualified cybersecurity professionalsto secure their most vulnerable assets. Network security analyst and network security engineer are listed as two of the highest paid cybersecurity jobs. While network security engineeris more likely to be building out security systems, a network securityanalystis more likely to be tasked with scanning the network for plausible vulnerabilities. Both the positions earn an average between $90,000 and $150,000.If you wish to learn cybersecurity and build a colorful career in cybersecurity, then check out ourCybersecurity Certification Trainingwhichcomes with instructor-led live training and real-life project experience.This training will help you understand cybersecurity in depth and help you achieve mastery over the subject.Got a question for us? 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