module 2_lecture 3 - network configuration - lan setup
DESCRIPTION
System AdministrationModule 2: Lecture 3: Network Configuration: LAN SetupTRANSCRIPT
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NETWORK CONFIGURATIONLAN AND WIFI SETUP
Dr. Zeeshan Bhatti
Lecture 3
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LAN Setup 10BaseT Ethernet
802.11g Wireless
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10BASET ETHERNET SETUPTo connect a 10BaseT Ethernet network:
Install a network interface card (NIC) into each computer (host)
Connect each NIC to a hub or switch, using unshielded twisted pair (UTP) cabling
Hub:
Every frame received by a hub is reproduced on all of it’s ports
Switch (or Cable/DSL Router):
Every frame received by a switch is examined, and the correct port is determined for the frame
A Cable/DSL also provides network address translation (NAT)
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LAN NETWORK CABLE CONNECTION
Generally LAN cables are called Unshielded Twisted Pair. There are two cable systems.
Straight cable.
Crossed cable.
The straight and crossed cable systems are shown below:
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COLOUR CODING FOR STRAIGHT CABLE
Straight colour systems are used to connect PC to Hub or Hub to PC. Insert the wire into the connector. Hold both connectors face same. See below.
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You have to follow a colour coding system to connect the wire into each port of the connector. There are eight ports in the connector. Colour coding is shown below for both ends of the cable:
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COLOUR CODING FOR CROSSED CABLE SYSTEM
Crossed cable systems are used to connect PC to PC or Hub to Hub. You have to follow a colour coding system to connect the wire into each port of the connector.
The system is shown below
One End Other End
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By using this method you can successfully connect your LAN connection.
Connect your PC and Laptop by using straight cable system.
After all the connection was set, it is required to configure LAN and Internet connection. How to configure LAN and internet connection will be discussed in in next section.
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802.11G WIRELESS SETUP
To setup a 802.11g wireless network:
Install an 802.11g (or 802.11b) NIC into each host
Plug a wireless router or base station into your Internet connection (e.g. cable modem)
Configure the SSID and security protocols on the wireless router and each of the NICs
e.g. WPA encryption, and specify the key
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AD HOC WIRELESS NETWORKS
If you have only a few hosts (2-3), you can create an ad hoc network
This type of network does not have a base station (or wireless router)
The hosts communicate directly with one another
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WIRELESS NETWORKS COMMENT
A wireless network connection is often not useful for a desktop PC
For this reason, wireless routers typically contain a few Ethernet ports
It is typical to have desktop PCs wired, and notebooks and PDAs will have wireless
e.g. Notebooks with 802.11g and PDAs with 802.11b
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PACKET SNIFFERS
Packet sniffers are a useful tool for exploration of networking They can also be used by network programmers to diagnose packet format errors
They typically examine many protocols This includes the header information e.g. Wireless, Ethernet, TCP/IP, HTTP
Some common packet sniffers are: Ethereal (Linux/Mac/Windows, multi-protocol) TCPDump (Linux/Windows, TCP/IP)Kismet (Linux, wireless)
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ETHEREAL TUTORIAL
Here is how to sniff packets using Ethereal: Start Ethereal
Select the correct network interface
Start capturing packets, stop when done
Select a packet from the list
Examine the packet hierarchy and header information, such as: Ethernet or wireless frame headers
IP datagram headers
TCP datagram headers
SMTP message
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Wireless and Network Device Installation
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WIRELESS AND NETWORK DEVICE INSTALLATION
Device installation techniques are always complex
Too many “Unrelated” technologies are scattered
across Windows
Installation requirements are unique for each technology.
Each having specific technical challenges
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PROBLEMS WITH INSTALLATIONConcept of “Pairing” too complex
Too many technologies
Vendors implement differently
No generic Windows solution
Net result
High rate of returns
High customer service calls
Slow adoption of technology
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SOLUTION: "ADD A DEVICE" WIZARD
Unified solution: One size fits all Inbox wizard
Simple steps to discover/pair devices
Abstracts technology
Install “devices” not “technologies”
No tech-specific terminology
Enables end to end Rally Experience
Device install with no CDRom
Inbox drivers or Windows Update
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SCENARIO: DEVICE PAIRING
Goal: Pair PC to a device
Discover devices
Associate/pair device with PCMultiple technologies
Bluetooth
Wireless USB
Rally Experience (UPnP/WSD)
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SCENARIO: WIFI FACILITY
Goal: Configure device to use WiFinetwork
Discover unprovisionedWiFi devices
Provision with WiFinetwork profile
Any WPS device
Access Point, Printer, etc
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SCENARIO: VERTICAL PAIRING
Goal: Pair WiFi device with PC
Discover unprovisionedWiFi device
Provision device with WiFi settings
Pair PC with device
Enables “Rally Experience”
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HOW TO LAUNCH
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HOW “ADD A DEVICE WIZARD” WORKS
Wizard with 3 phases:
Discovery
Ceremony
Completion
Post wizard
NCD Devices: PnP-X device presence detection
PnP driver loading
Management
Devices and Printers
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ADD DEVICE WIZARD: DISCOVERY
Displays all pairable devices
Continuously updates
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ADD DEVICE WIZARD: CEREMONY
Walks through pairing steps
Simple to use
Consistent across technologies
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ADD DEVICE WIZARD: COMPLETION
Indicates pairing success or failure
Failure lists mitigation steps
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ADD DEVICE WIZARD: POST PAIRING
Bluetooth/Wireless USB
PnP loads drivers
WSD/UPnP/WiFi
PnP-X detects device presence
PnP loads drivers
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UNIFIED PAIRING WORK FLOW
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Dell
SE198FWP
Logitech
MX1000
Logitech
diNovo
Dell XPS
Completion4
Devices & Printers1
Ceremony3Discovery2
Dave’s
Phone
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THANKYOU
Q & A
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