Essential Tools For Data Comm Engineers

Presented by:

Engr. Syed Abdul Basit

Telecommunication Engineer

Guest Speaker Session

@

PAF-KIET

Thursday, December 3, 2009

Wireshark

MRTG

Packet Tracer

NS3

GNS3

OPNET

Boson Netsim

Prepared by: Engr. Syed Abdul Basit

Prepared by: Engr. Syed Abdul Basit

Wireshark is a network packet/protocol analyzer.

◦ A network packet analyzer will try to capture network packets

and display packet data details.

The basic tool for observing the messages exchanged

between executing protocol entities is called a packet

sniffer.

Prepared by: Engr. Syed Abdul Basit

Prepared by: Engr. Syed Abdul Basit

Figure 1: Structure of a packet sniffer.

Prepared by: Engr. Syed Abdul Basit

Step 1: Download and Install Wiresharkhttp://www.wireshark.org/download.html

Step 2: Open the Wireshark.

Step 3: Wireshark settings.

Step 4: Start capturing packets

Step 5: Analyze the capture packets

Prepared by: Engr. Syed Abdul Basit

Figure 2: Wireshark Window

Figure 3: Wireshark Preferences Setting

PreferencesYour Name

Figure 4: Wireshark Capture Settings

Options

Interface List

Check your IP Address

Figure 5: Wireshark GUI

Figure 6: HTTP Message

Network Administrators ◦ troubleshoot network problems

Network Security Engineers ◦ examine security problems

Developers ◦ debug protocol implementations

Wireshark Demo

Prepared by: Engr. Syed Abdul Basit

MRTG is a tool to monitors and measures the traffic

load on network links (web server, router).

MRTG generates HTML pages containing graphs

which provide a LIVE visual representation of the

traffic.

Typically collects data every five minutes.

Prepared by: Engr. Syed Abdul Basit

MRTG uses the Simple Network Management

Protocol (SNMP) to send requests.

MRTG consists of a Perl script which uses SNMP to

read the traffic counters of the routers.

Prepared by: Engr. Syed Abdul Basit

Prepared by: Engr. Syed Abdul Basit

Prepared by: Engr. Syed Abdul Basit

Comprehensive networking technology teaching and

learning software with powerful simulation,

visualization, assessment, and collaboration

capabilities.

To know more about: http://www.cisco.com/web/learning/netacad/packet_tracer/packet_tracer_03-

4_web.html

Prepared by: Engr. Syed Abdul Basit

collaborate on multiuser activities

simulate IOS commands

visualize network traffic

Prepared by: Engr. Syed Abdul Basit

Anyone can author, the PT Activity Wizard guides you.

The process is basically write instructions, build a correct answer network, specify grading, specify an initial network, save.

Ability to create your own learning activities, tasks, labs, games and complex assessments.

Build learning experiences, formative and summative assessments.

Prepared by: Engr. Syed Abdul Basit

Interface Overview

Create a Network

Network Simulation

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Logical & Physical Workspaces

Real-Time and Simulation Modes

User friendly CLI

Global event list (packet sniffer)

LAN, switching, TCP/IP, routing,

and WAN protocols

Multiple platform support

Activity Wizard, Lab grading

Integrated Help and Tutorials

Prepared by: Engr. Syed Abdul Basit

PT 5.0 is now a network-capable (peer to peer) application, using the real network (TCP socket connections) to carry the

Packet Tracer virtual packets.

The PT application running on one computer can communicate with the PT application running on 1 or more

other computers.

This connectivity between multiple instances of PT supports teamwork, classroom games, collaboration, competition,

remote instructor-student interaction, and social networking.

Prepared by: Engr. Syed Abdul Basit

Real TCP Socket Connection

Real TCP Socket Connection

Real TCP Socket Connection

PC 1 PC 2

PC 3

3 Packet Tracer instances interacting

via Packet Tracer Messaging Protocol (PTMP)

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Access the global instructor community for questions, discussions,

collaboration, and activity sharing

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These are not listed on the PT Resource Page:

PT Help Contents

PT embedded Tutorials

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Performance Analysis

◦ OPNET

Network Simulators

◦ Boson Netsim

◦ GNS3

◦ NS-2

◦ NS3

Prepared by: Engr. Syed Abdul Basit

Wireshark◦ http://www.wireshark.org/◦ http://wiki.wireshark.org◦ http://wiki.wireshark.org/SampleCaptures

MRTG◦ http://www.mrtg.com/

OPNET◦ http://www.opnet.com/

Packet Tracer◦ http://www.cisco.com/web/learning/netacad/course_catalog/PacketTracer.html

Prepared by: Engr. Syed Abdul Basit

AQ&Q U E S T I O N S

A N S W E R S

Syed Abdul Basit

+92 334 354 9727

sabasit2006@gmail.com

Join me on Social Mediahttp://xeesm.com/SyedAbdulBasit/