In a network what is the fundamental building block

In this chapter, you learn about the following topics: • Fundamental concepts in network security, including identification of common vulnerabilities and threats, and mitigation strategies • Implementation of a security architecture using a lifecycle approach, including the phases of the process, their dependencies, and the importance of a sound security policy The open nature of the Internet makes it vital for businesses to pay attention to the security of their networks. As companies move more of their business functions to the public network, they need to take precautions to ensure that the data cannot be compromised and that the data is not accessible to anyone who is not authorized to see it. Unauthorized network access by an outside hacker or a disgruntled employee can cause damage or destruction to proprietary data, negatively affect company productivity, and impede the capability to compete. The Computer Security Institute reported in its 2010/2011 CSI Computer Crime and Security Survey (available at To start on our network security quest, this chapter examines the need for security, looks at what you are trying to protect, and examines the different trends for attacks and protection and the principles of secure network design. These concepts are important not only for succeeding with the IINS 640-554 exam, but they are fundamentals at all security endeavors on which you will be embarking. Building Blocks of Information Security Establishing and maintaining a secur...

Network Building Blocks Over the past twenty years, the use of the internet and other digital networks has grown exponentially around the world. Although to some it may seem complex, these networks are relatively simple and made up of only a few parts. The major networking building blocks are workstations, network applications, the type of network, servers, and routers. Workstations and Applications There must be workstations for a network to be present. Workstations include laptops, desktop computers, tablets, phones, or any other device made to connect to a network and do tasks. Network applications are programs and resources that can be shared through the network. Applications can be shared with everybody or have restrictions placed on them so only a few people can access them (Network Building Blocks). Without applications, there would be little need for a network to exist. Networks The two most common types of networks are Local Area Networks (LAN) and Wide Area Networks (WAN). Other types of networks include Metropolitan Area Networks (MAN), Storage, System or Server Area Networks (SAN), Campus or Controller Area Networks (CAN) and Personal Area Networks (PAN). Networks typically require a hardwire connection, but there are also wireless networks available for people to connect to. LANs connect workstations in a small area. Examples of this would include a home computer and printer or an office building with multiple computers and printers (Lesson 1 n.d.). The Nt1330...

Ricardo Panez January 15, 2019 While different companies may have different cybersecurity needs based on their industry and size, there are a few basic things that every organization, regardless of size and focus, should include in their cybersecurity architecture. What are these cybersecurity basics? And, how do they benefit your business’ Cybersecurity Building Block #1: Network Security Every organization needs to have a network security device (i.e. a firewall) to filter traffic. Firewalls inspect incoming and outgoing data packets for signs of abnormal or potentially malicious requests or data. Virtually every business uses Firewalls are a very basic component of any security architecture, and no business should be without them. Cybersecurity Building Block #2: Endpoint Security Another basic building block of any cybersecurity architecture is the endpoint security agent. Endpoint security can take many forms, including antivirus/antimalware programs and individual device firewalls. The goal of an endpoint security agent is to provide protection for individual assets on the network. Endpoint security agents help businesses protect individual assets on their network even after an attacker has breached external security measures. They help to bolster a defense-in-depth strategy by slowing down attackers or even providing an additional point where intrusion attempts may be detected. Cybersecurity Building Block #3: Incident/Information Management Many cybersecurity tools...

6 Conclusion Introduction What is a node? A node is a fundamental building block of networks and systems. It is a point of intersection or connection between two or more networks or systems. Nodes can be physical or virtual, and they can be used to connect networks, systems, and devices. Nodes are essential for communication and data transfer between networks and systems. They are used to route data, store information, and provide access to resources. Nodes are also used to provide security and authentication for networks and systems. In addition, nodes can be used to monitor and manage networks and systems. Nodes are an integral part of any network or system, and they are essential for efficient and secure communication. What is a Node? Exploring the Basics of Networking and System Architecture A node is a point of intersection or connection between two or more networks. It is a basic building block of a network, and it can be either a physical or a virtual device. In a physical network, a node is a physical device such as a router, switch, or computer. In a virtual network, a node is a virtual device such as a virtual machine or a cloud service. Nodes are essential components of a network, as they are responsible for routing data from one point to another. They are also responsible for providing access to the network, as well as for providing security and other services. Nodes can be connected to each other in a variety of ways, including wired or wireless connections. N...

Switches allow devices on your network to communicate with each other, as well as with other networks, creating a network of shared resources. Through information sharing and resource allocation, switches save money and increase productivity. There are two basic types of switches to choose from as part of your networking basics: • A managed on-premises switch lets you configure and monitor your LAN, giving you tighter control of your network traffic. • Have a small IT team? A cloud-managed switch can simplify your network management. You get a simple user interface, multisite full-stack management, and automatic updates delivered directly to the switch. Routers connect multiple networks together. They also connect computers on those networks to the Internet. Routers enable all networked computers to share a single Internet connection, which saves money. A Routers connect your business to the world, protect information from security threats, and can even decide which computers receive priority over others. Beyond those basic networking functions, routers come with additional features to make networking easier or more secure. Depending on your An access point acts like an amplifier for your network. While a router provides the bandwidth, an access point extends that bandwidth so that the network can support many devices, and those devices can access the network from farther away. But an access point does more than simply extend Wi-Fi. It can also give useful data about the d...