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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
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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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