Wireless Network and Security

Table of Contents

WLAN Tools 2

Installation steps of Wireshark 2

Tcpdump 8

Comparison of Wireshark and Tcpdump in functionalities 8

Part B 10

Wireless Technologies 10

WI-FI: IEEE 802.11 STANDARD 10

Real Time application of WI-FI 10

Advantages 11

Disadvantage 11

Part A

Introduction

• Levels of complexity faced

• Included features of both tool

Report Layout

The assignment is done in MS Word format with 1.5 spacing using 11-pt Calibri (Body) font and 2 cm margins on all four sides of your page with appropriate section headings. Reference sources are cited in the text of the report, and listed appropriately at the end in a reference list using IEEE referencing style.

WLAN Tools

The two WLAN sniffing tools we have used are Wireshark and Tcpdump.

Installation steps of Wireshark

Downloading Wireshark according to your system type, either 32-bit or 64-bit as determined. Ours is 64-bit.

Pop up of User Account Control dialog box, select Yes to allow the program to make changes to this computer.

Pop up Review the license agreement. If you agree, select I Agree to continue

Choosing the features of Wireshark you want to install.

Choosing the default location where Wireshark will be kept.

Installation completed

Wireshark started

Installation steps of Tcpdump

Downloading Tcpdump for Windows

Downloading Libpcap

Unzipping Tcpdump

Then we have to follow the steps mentioned in INSTALL.txt

Level of complexity

WLAN sniffer Tools are used to monitor and seizure data traffic on a computer network. Any data that is sent between computers over the internet or using any networks that are using small lumps called packets, which are routed to their target and collected back into a complete message.

• Then the analysis of the captured and converted data is done.

Included features

Wireshark

Wireshark delivers a number of functionalities:

Tcpdump

Tcpdump delivers a number of functionalities:

1) It allows the functionality of read and write of captured traffic to data files in Packet Capture (PCAP) format.

Comparison of Wireshark and Tcpdump in functionalities

Advantages and disadvantages of Wireshark and Tcpdump

Wireshark

2. It is open source and free for all. So anyone can download and use it.

3. It supports more than 1000 protocols.

2. It doesn’t help in identifying the abnormal packet.

3. It allows TCP reconstruction but not in formatted way.

Tcpdump

3. It is open Source.

Disadvantage:

Summary

Here we have discussed about packet sniffer tools like Tcpdump and Wireshark, there are more tools also that allows us to do analysis on the captured data of web traffic. The two tools we have used operate by directly examining bytes or text formats. But to reconstruct HTTP web page through them is difficult. We have done comparison between them. We have shown advantage and disadvantage of the two tools we have used namely: Wireshark and Tcpdump.

Part B

Wireless Technologies

Wireless Technology are those technology that allows connection of devices to the network or between the two devices themselves without using any wired cables like ethernet, fibre optics, or wire.

Bluetooth Wireless Technology

•As it has short range which requires low power, so they are suited for portable, battery-operated devices.

•Supports both Voice and data communication.

Real time application of Bluetooth

Advantages

1. Interference is less from other wireless devices.

2. lower power consumption required.

7. It is free to use if the device is installed with Bluetooth.

Disadvantages

1. bandwidth is low as compared to Wi-Fi.

WI-FI: IEEE 802.11 STANDARD

Real Time application of WI-FI

1. Office

Wi-Fi wireless technology saves businesses or companies a substantial amount of money on installations costs.

Advantages

2. Easiness

If you want to connect a new device with a network, just turn on the Wi-Fi and do the meek conformation settings.

5. Cost Control

Devices can be added without any cost of cables and man needed.

Disadvantages

2. Connectivity/Reliability

Wi-Fi signal are prone to interference.

NFC (Near field communication)

Real time applications of NFC

Mobile wallet like google pay, Samsung pay use it.

Advantages

1. Suitable:

NFC mobile banking and payment provide user with hassle free mode of payment.

Disadvantage

1. Expensive:

It is safer than credit card payment but nowadays phone is being hacked. Muggers are coming out with fresher methods to gain unlawful access into users’ personal, social security and financial data stored there. This makes the entire system defenceless and doubtful.

Purpose

According the details I gathered and study I did in this report I will purpose Wi-Fi over other wireless technology because it has higher range than Bluetooth and NFC. As well as they have

3. Flexibility

Internet can be accessed from anywhere.

6. Standardization of Technology

Wi-Fi technology has standardized for all countries.

Summary

References

[4]"Do You Understand Wi-Fi?", Lifewire, 2019. [Online]. Available: https://www.lifewire.com/what-is-wi-fi-2377430. [Accessed: 30- Apr- 2019].

[5]A. Disadvantages, "Advantages and Disadvantages", Near-field.blogspot.com, 2019. [Online]. Available: http://near-field.blogspot.com/p/pros-cons.html. [Accessed: 30- Apr- 2019].