Learn what network security is. Jungwoo introduces the essential terms and concepts of network security.
- Every now and again, you may hear of a large cyber attack on a network. For example, the October 2016 Dyn cyberattack took down many large services, such as Amazon, Airbnb, and Netflix. A cyberattack aims at security vulnerabilities within a network, and threatens the confidentiality, integrity, and availability of the network systems.
As you can imagine, network security is a key component of preventing, and recovering from, the cyber security attacks. The term network and network security refers to a collection of things connected to one another. These things can be any devices, such as your phone, computer, or even a thermostat. However, all of them must have a unique address that can be used to direct a message.
Internet of things, also known as IoT, is a good example of a network. There are ample opportunities for attackers to exploit vulnerable networks. Network security attempts to minimize vulnerabilities in an effort to prevent these malicious actors from inflicting damage. One thing to note is that there is no perfect network security.
We don't have unlimited resources to address every possible weakness in our network. Therefore, network security is a prime example of a risk management effort. There is also constant change and evolution when dealing with network security risks. Given various constraints, including limitations in budget, time, manpower, et cetera, you need to identify your top priorities and make informed decisions to best leverage the resources you have, to protect your network.
The bottom line here is, minimizing your risks, while maximizing your return on investment in network security.
- Network security concepts
- The basic functions of a firewall
- Intrusion detection and prevention systems
- Using network data to improve security
- Using log servers to collect data
- Collecting application data
- Collecting OS data
- Network forensics
- Network security visualization