CPDS - Modulo 1

7/30/2019 CPDS - Modulo 1

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MAESTRA EN INGENIERA YDESARROLLO DE SOFTWARE

www.cpds.edu.mx

COLEGIO DE POSTGRADO EN DESARROLLO DE SOFTWARE

MCT Oscar Correas Del GessoOf. +52 (222) 2.37.94.92

01.800.808.62.40

[email protected]


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Administracin de servidoresWindows y Conectividad


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Understanding Network Infrastructure

Module 1


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Module Overview

Network Architecture Standards

Local Area Networking

Wide Area Networking

Wireless Networking

Connecting to the Internet

Remote Access


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Lesson 1: Network Architecture Standards

Network Components and Terminology

Network Architecture

Network Media Access Control Methods

IEEE 802 Standards


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Network Components and Terminology

Data

Node

Client

Server

Peer

Hub

Switch

Router

Media

Transport protocol

Network adapter

Bandwidth


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Network Architecture

Most common network architecture types:

Ethernet

FDDI

Token ring


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Network Media Access Control Methods

Network Media AccessControl Method

Action

CSMA/CD

Checks for media availability

Sends data

Resolves collisions

CSMA/CA

Monitors media availabilityconstantly

Advertises intent to send

Sends data

Token passing

Listens for token

Packages data with token

Confirms delivery when tokenreturns


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IEEE 802 Standards

IEEE 802 standards:

IEEE 802.3 Ethernet networks

IEEE 802.5 Token ring networks

IEEE 802.11 Local wireless networks

IEEE 802.16 Broadband wireless networks


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Lesson 2: Local Area Networking

What Is a LAN?

How Nodes on a LAN Communicate

Physical Components of a LAN

LAN Physical Topologies

LAN Logical Topologies


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What Is a LAN?

A LAN is the most common form of computer network


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How Nodes on a LAN Communicate

00-22-FB-8A-41-64

00-B0-D0-86-BB-F7


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Physical Components of a LAN

Components of a LAN:

Network adapter

Wiring

Hub/Switch

Termination point

Wiring cabinet


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LAN Physical Topologies

StarBus

Hybrid Mesh

Ring


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LAN Logical Topologies

Topologies:

Bus Logical (Ethernet)

Ring Logical (FDDI and token ring)


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Lesson 3: Wide Area Networking

What Is a WAN?

Physical WAN Components

What Are the WAN Standards?

What Are the T-Carrier and E-Carrier Standards?

Optical Carrier Standards

What Is ISDN? Connecting to the Internet with WAN Components


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What Is a WAN?

LAN

LANLAN

LAN


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Physical WAN Components

Physical WAN components:

Bridge

Router

Leased line

Backbone


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What Are the WAN Standards?

WAN standards:

T-Carrier

E-Carrier

ISDN

Optical Carrier (OC-X)


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What Are the T-Carrier and E-Carrier Standards?

Standard Bandwidth Typical Media

T1 1.544Mbps Copper

T3 44.736Mbps Fiber

E1 2.048Mbps Copper

E3 34.368Mbps Fiber

T-Carrier standards are:

E-Carrier standards are:

Used in North America

Used globally except North America


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Optical Carrier Standards

Standard Bandwidth

OC-1 51.84Mbps

OC-3 155.52Mbps

OC-12 622.08Mbps

OC-24 1244.16Mbps

OC-48 2488.32Mbps

OC-192 9953.28Mbps

OC-768 39,813.12Mbps


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What Is ISDN?

ISDN is:

Dial-on-demand

Typically used as a backup connection

Standard Bandwidth

BRI 128Kbps

PRI 1.536Mbps


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Connecting to the Internet with WAN Components

Common technologies used:

DSL modem

Cable modem

Analog modem

LAN

InternetInternet

Modem

LAN


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Lesson 4: Wireless Networking

Wireless Networking Components

Wireless Standards and Protocols

What Is 802.11?

Securing Wireless Networks


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Wireless Networking Components

Ad hoc Network

Infrastructure Network

Wireless network adapter

Access point

Ad Hoc network

Infrastructure network

SSID


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Wireless Standards and Protocols

Wireless standards and protocols:

802.11 - Wireless LAN

802.16 - Wireless WAN


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What Is 802.11?

Wireless LAN standards:

Common versions: 802.11a 802.11b 802.11g 802.11n


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Securing Wireless Networks

Common encryption methods:

WEP

WiFi Protected Access (WPAv1 and WPAv2)

WPA-PSK (Shared key)

WPA-Enterprise (Per-user keys)

Other methods:

MAC filtering

Smart cards and USB tokens

Hidden SSID


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Lesson 5: Connecting to the Internet

What Is the Internet?

Intranets and Extranets

What Is a Firewall?

What Is a Perimeter Network?

Proxy and Reverse Proxy Servers


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What Is the Internet?

Internet


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Intranets and Extranets

Intranets are:

A group of services hosted on a network

A private structure

Internet-like service provision

Extranet are:

Similar services to intranet

Exposed to networks outside of theintranet

Services that require extra securitymeasures


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What Is a Firewall?

Internal Network


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What Is a Perimeter Network?

Internet

Perimeter NetworkLAN Untrusted Network


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Proxy and Reverse Proxy Servers

Proxy servers:

Filter client access to resources

Locally cache information

Reverse proxy servers:

Redirect incoming traffic

Allow for load balancing


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Lesson 6: Remote Access

What Is a Branch Office?

What Is Remote Access?

Encryption and Authentication

Virtual Private Networks

RADIUS


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What Is a Branch Office?

Main Office

Branch Office

Branch Office

Remote User


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Encryption and Authentication

Encryption is:

Scrambling data to prevent unauthorized access

Authentication is:

Providing a means of verifying the identity of auser or node


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Virtual Private Networks

Tunnel

Internet

VPN ServerCorporate LAN

VPN Client


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RADIUS

RADIUS key functions:

Authenticate

Authorize

Account

RADIUS: Remote Authentication Dial In User Service

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CPDS - Modulo 1

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