Networking + Notes and Simulations

Chapter 1: Subnetting What is a subnet? A subnet, or subnetwork, is a  network  inside a network. Subnets make networks more efficient. Through subnetting, network traffic can travel a shorter distance without passing through unnecessary  routers  to reach its destination. What is an IP address? In order to understand subnets, we must quickly define  IP addresses . Every device that connects to the Internet is assigned a unique IP ( Internet Protocol ) address, enabling data sent over the Internet to reach the right device out of the billions of devices connected to the Internet. While computers read IP addresses as binary code (a series of 1s and 0s), IP addresses are usually written as a series of alphanumeric characters. What do the different parts of an IP address mean? This section focuses on IPv4 addresses, which are presented in the form of four decimal numbers separated by periods, like 203.0.113.112. (IPv6 addresses are longer and use letters as well as...

 Chapter 2: Types of Verification Servers 1. RADIUS SERVER Remote Authentication Dial-In User Service is a networking protocol that provides centralised authentication, authorization and accounting management for users who connect to and use a network service. RADIUS VS TACACS PARAMETER RADIUS TACACS Ports Used UDP 1812, UDP 1813 TCP 49 Encryption Encrypts only the password field in the packet Encrypts entire packet Authentication & Authorization Combines authentication, authorization and Accounting Separates Authentication, Authorization and Accounting 2. JBOD JBOD= Just a bunch of disks. It is a type of multilevel configuration for disks. It refers to a collection of disks in a system or array as one logical volume. JBOD is used by organization that need an efficient on premises storage method. 3. KERBEROS SERVER It is a protocol for authent...