Networking

Before you start Objectives: Learn what is Remote Access, Remote Access Server, and how it is typically used and configured. Prerequisites: no prerequisites. Key terms: remote access, server, configuration, RAS, protocols, PPPoE  What is Remote Access Remote Access allows a host to connect to a server or a private network, and access resources on the server or network … Read more

Before you start Objectives: Learn about different technologies that can be used to connecto to the Internet. Prerequisites: no prerequisites. Key terms: Internet, connection, technology, Dial-up, ISDN, DSL, Cable, Satellite, Wireless  Public Switched Telephone Network (PSTN) The first method to connect to the Internet is using was PSTN. With PSTN we use a modem device, which takes a … Read more

Before you start Objectives: Learn about different technologies and services which can be utilized to connect to the WAN. Prerequisites: You have to know what a WAN is, and why it is used. Key terms: WAN, PSTN, ISDN, ATM, Frame Relay, SONET, MPLS  Public Switched Telephone Network (PSTN) To connect one site (location) to another, over WAN, we … Read more

Before you start Objectives: Learn about different parts of WAN, how we call them, who is responsible for which part of the WAN, and about different methods to send data in WAN. Prerequisites: no prerequisites. Key terms: WAN, structure, Packet Switching, Circuit Switching, organization  WAN Components Organizations often rely on (contract with) Service Providers who have the necessary … Read more

Before you start Objectives: learn what is WAN, why it is used, and which cabling and signaling methods can be used in WANs. Prerequisites: no prerequisites. Key terms: WAN, T1, T3, E1, E3, J1, J3, OC, cabling, speed  What is WAN WAN is used to connect two or more networks over a long distance. The first thing we … Read more

Before you start Objectives: Learn which configuration options are required in order to set up wireless network properly. Prerequisites: you should know about wireless networks in general. Key terms: wireless, network, SSID, access, configure, wap, beacon, NIC, WPA Configuring Wireles Access Point (WAP) The first thing we need to do is to configure the WAP. Most WAPs will … Read more

Before you start Objectives: Learn what is infrared wireless connection and its specifics, and what is Bluetooth and its specifics. Prerequisites: no prerequisites. Key terms: Bluetoots, devices, Infrared, mode, light, signal, uses, distance, IrDA, network, PAN, wireless  Infrared (IrDA) Infrared technology uses light waves that are just passed the visible light spectrum. The light used comes from three … Read more

Before you start Objectives: Learn about common authentication types and security implementations used in wireless networks today. Prerequisites: no prerequisites. Key terms: key, wireless, authentication, WPA, encryption, security, network, WEP, AP, server Security First wireless networks were not very secure. Trough time, security of wireless networks has improved. To protect our wireless network we must configure authentication and … Read more

Before you start Objectives: Learn about different wireless standards and their specifics, including 802.11n. Prerequisites: no prerequisites. Key terms: 802.11n, channels, network, standards, wireless, frequency, range, devices, GHz Standards The wireless standards that we are going to talk about here are 802.11a, 802.11b, 802.11g, and 802.11n. Different standards work on different frequency ranges. Frequency The reason why the frequency … Read more

Before you start Objectives: Learn the basics about frequencies, architecture, and media access method used in wireless networks. Prerequisites: you should know the types of network topologies used. Key terms: wireless, network, device, BSS, data, frequency, AP, topology, method, access Radio Frequency Radio Frequency waves replace physical wires as the medium which we use to transfer data on … Read more