"Network security consists of the policies, processes and practices adopted to prevent, detect and monitor unauthorized access, misuse, modification, or denial of a computer network and network-accessible resources."
Study of the principles and practices of securing network data and information against unauthorized access or attacks by third parties for data protection.
Network Topologies: Understanding different network topologies like ring, bus, mesh, and star and their security implications is essential when working with network security.
Network Protocols: Learning about different network protocols, like TCP/IP, HTTP, SMTP, POP3, FTP, is important when working with network security.
OSI Model: Understanding the OSI model and its seven layers is crucial when it comes to network security.
Firewalls: Firewalls are essential components of network security which protect a network from unauthorized access and cyber-attacks.
Authentication and Authorization: These two concepts are used to verify the identity of users and grant or deny access to them. Understanding these concepts can help in the creation of secure network environments.
Encryption Techniques: Learning about different encryption techniques like symmetric and asymmetric encryption, hash functions, and digital signatures can help protect sensitive data being transmitted over networks.
VPNs: Virtual private networks (VPNs) are used to extend a private network across a public network like the internet. Understanding how VPNs work and their security implications is essential.
Network Access Control: Network access control (NAC) is a security solution that restricts access to a network based on predefined conditions. Understanding how NAC works and its implementation can help create secure network environments.
Intrusion Detection and Prevention systems: These systems detect and prevent any unauthorized access or intrusion into a network. Understanding how these systems work can help in creating secure network environments.
Penetration Testing: Penetration testing is a method of testing a network's security by simulating a cyber-attack. Understanding how penetration testing works can help in identifying network vulnerabilities and preparing for cyber-attacks.
Network Monitoring and Management: Monitoring and managing a network are essential for maintaining security. Understanding the tools and techniques used for network monitoring and management can help create a secure network.
Secure coding practices: Secure coding practices help in creating secure software and applications that run on a network. Understanding these practices is crucial when developing or deploying network applications.
Disaster Recovery and Business Continuity Planning: Disasters like cyber-attacks or natural disasters can cause network disruptions. Having a disaster recovery and business continuity plan in place can help recover from such events.
Cybersecurity frameworks: Cybersecurity frameworks are a set of guidelines and best practices that help organizations create a secure network environment. Understanding different cybersecurity frameworks like NIST, ISO can help in creating secure networks.
Access Control: This involves restricting access to certain resources and controlling who is allowed to access them.
Firewall: A software or hardware device that blocks unauthorized access to a network while allowing permitted traffic through.
Encryption: The process of converting data into a code to ensure that it cannot be understood by unauthorized users.
Intrusion Detection: A system that monitors network traffic for malicious activity and alerts IT personnel when it is detected.
Intrusion Prevention: A system that actively works to prevent malicious activity from occurring on a network.
Virtual Private Network (VPN): A secure way of accessing a network over the internet.
Antivirus/ Malware Protection: Software that detects, prevents and removes viruses, worms, Trojans and other types of malicious software.
Vulnerability Assessment: The process of identifying and evaluating the security vulnerabilities in a network or system and determining how to address them.
Penetration Testing: The process of simulating an attack on a network or system to identify weaknesses and determine how to address them.
Application Security: This involves securing applications to ensure that they are not vulnerable to attack or abuse.
Traffic Analysis: The process of analyzing network traffic to detect and prevent suspicious activity.
Authentication: The process of verifying the identity of a user or device.
Authorization: The process of determining what resources a user or device is allowed to access.
Physical Security: Guarding against physical threats to a network or system, such as theft or damage to hardware.
Disaster Recovery/ Business Continuity: The process of ensuring that a network can recover quickly and operate normally after a disaster such as a natural disaster or cyber attack.
"Network security involves the authorization of access to data in a network, which is controlled by the network administrator."
"Users choose or are assigned an ID and password or other authenticating information that allows them access to information and programs within their authority."
"Network security covers a variety of computer networks, both public and private, that are used in everyday jobs: conducting transactions and communications among businesses, government agencies, and individuals."
"Networks can be private, such as within a company, and others which might be open to public access."
"Network security is involved in organizations, enterprises, and other types of institutions."
"It does as its title explains: it secures the network, as well as protecting and overseeing operations being done."
"The most common and simple way of protecting a network resource is by assigning it a unique name and a corresponding password."
"...prevent, detect and monitor unauthorized access, misuse, modification, or denial of a computer network and network-accessible resources."
"The network administrator controls the authorization of access to data in a network."
"Users choose or are assigned an ID and password or other authenticating information that allows them access to information and programs within their authority."
"Network security covers a variety of computer networks, both public and private, that are used in everyday jobs: conducting transactions and communications among businesses, government agencies, and individuals."
"Networks can be private, such as within a company, and others which might be open to public access."
"Network security is involved in organizations, enterprises, and other types of institutions."
"It secures the network, as well as protecting and overseeing operations being done."
"A unique name and a corresponding password are assigned to protect a network resource."
"...detect and monitor unauthorized access, misuse, modification, or denial of a computer network and network-accessible resources."
"The network administrator controls the authorization of access to data in a network."
"Users choose or are assigned an ID and password or other authenticating information that allows them access to information and programs within their authority."
"Network security covers a variety of computer networks, both public and private, that are used in everyday jobs: conducting transactions and communications among businesses, government agencies, and individuals."