A wireless network may be a set of two or more devices connected with one another via radio waves within a limited space range. The devices during a wireless network have the liberty to be in motion, but be in reference to the network and share data with other devices within the network. one among the foremost crucial point that they’re so spread is that their installation cost is extremely cheap and fast than the wire networks.

Wireless networks are widely used and it’s quite easy to line them up. They use IEEE 802.11 standards. A wireless router is that the most vital device during a wireless network that connects the users with the web.

In a wireless network, we’ve Access Points which are extensions of wireless ranges that behave as logical switches.

Although wireless networks offer great flexibility, they need their security problems. A hacker can sniff the network packets without having to be within the same building where the network is found. As wireless networks communicate through radio waves, a hacker can easily sniff the network from a close-by location.

Most attackers use network sniffing to seek out the SSID and hack a wireless network. When our wireless cards are converted in sniffing modes, they’re called monitor mode.

Kismet

Kismet may be a powerful tool for wireless sniffing that’s found in Kali distribution. It also can be downloaded from its official webpage − https://www.kismetwireless.net

Let’s see how it works. First of all, open a terminal and sort kismet. Start the Kismet Server and click on Yes, as shown within the following screenshot.

As shown here, click the beginning button.

Now, Kismet will start to capture data. the subsequent screenshot shows how it might appear −

NetStumbler

NetStumbler is another tool for wireless hacking that’s primarily meant for Windows systems. It are often downloaded from http://www.stumbler.net/

It is quite easy to use NetStumbler on your system. you only need to click the Scanning button and await the result, as shown within the following screenshot.

It should display a screenshot as follows −

It is important to notice that your card should support monitoring mode, otherwise you’ll fail to watch .

Wired Equivalent Privacy

Wired Equivalent Privacy (WEP) may be a security protocol that was invented to secure wireless networks and keep them private. It utilizes encryption at the info link layer which forbids unauthorized access to the network.

The key’s want to encrypt the packets before transmission begins. An integrity check mechanism checks that the packets aren’t altered after transmission.

Note that WEP isn’t entirely resistant to security problems. It suffers from the subsequent issues −

CRC32 isn’t sufficient to make sure complete cryptographic integrity of a packet.
It is susceptible to dictionary attacks.
WEP is susceptible to Denial of Services attacks too.

WEPcrack

WEPcrack may be a popular tool to crack WEP passwords. It are often downloaded from − https://sourceforge.net/projects/wepcrack/

Aircrack-ng

Aircrak-ng is another popular tool for cracking WEP passwords. It are often found within the Kali distribution of Linux.

The following screenshot shows how we’ve sniffed a wireless network and picked up packets and created a file RHAWEP-01.cap. Then we run it with aircrack-ng to decrypt the cypher.

Wireless DoS Attacks

In a wireless environment, an attacker can attack a network from a distance and thus , it’s sometimes difficult to gather evidences against the attacker.

The first sort of DoS is Physical Attack. this sort of attack is extremely basic and it’s within the base of radio in

interference which may be created even from cordless phones that operate in 2.4 GHz range.

Another type is Network DoS Attack. because the Wireless Access Point creates a shared medium, it offers the likelihood to flood the traffic of this medium toward the AP which can make its processing more slow toward the clients that plan to connect. Such attacks are often created just by a ping flood DoS attack.

Pyloris may be a popular DoS tool that you simply can download from − https://sourceforge.net/projects/pyloris/

Low Orbit Ion Cannon (LOIC) is another popular tool for DoS attacks.

Quick Tips

To secure a wireless network, you ought to keep the subsequent points in mind −

Change the SSID and therefore the network password regularly.
Change the default password of access points.
Don’t use WEP encryption.
Turn off guest networking.
Update the firmware of your wireless device.

So, this brings us to the end of blog. This Tecklearn ‘Concept of Wireless Hacking’ blog helps you with commonly asked questions if you are looking out for a job in Cyber Security. If you wish to learn Ethical Hacking and build a career in Cyber Security domain, then check out our interactive, Certified Ethical Hacker Training, that comes with 24*7 support to guide you throughout your learning period. Please find the link for course details:

https://www.tecklearn.com/course/certified-ethical-hacker-training/

Certified Ethical Hacker Training

About the Course

Tecklearn’s CEH certification training course provides you the hands-on training required to master the techniques hackers use to penetrate network systems and fortify your system against it. In this training, you will master how to identify security vulnerabilities by inspecting network infrastructures and defend the malicious hacker with essential tools and techniques, advanced network packet analysis and system penetration testing techniques to build your network security skill-set and prevent hackers. We will train you on the advanced step-by-step methodologies that hackers actually use such as writing virus codes and reverse engineering so you can better protect corporate infrastructure from data breaches.

Why Should you take Certified Ethical Hacker Training?

The average salary for a Cybersecurity Specialist is $110,881 per year in the United States and INR 900,000 per year in India – Indeed.com
Global Cybersecurity industry is estimated to cross US$ 220 billion by 2021.
Today cyber security is one of the most important aspects for any organization. In today’s digitally-driven world every organization needs professionals who can keep the hackers at bay. Hence the salaries for certified ethical hackers are among the best in the industry.

What you will Learn in this Course?

Introduction to Ethical hacking

Scope of ethical hacking
Enterprise information security architecture
Introduction and PCI Data Security Standard Overview
Role of Security and Penetration Testers
Vulnerability assessment
Various cyber security laws
Penetration testing

Various aspects of Information Security

Information security attacks
OS attacks
Application level attacks
Phases and Concepts of Hacking
Information Security Law and Standards

System Hacking

What is System Hacking
Goals of System Hacking
Understanding the certified ethical hacker methodology
About Kali Linux
Hands On

Technology Standards

Introduction to F5 Technology and Terms
POS (Point of Sale ) , mPoS
What is GLBA Compliance
OWASP
Site monitoring Tools
Introduction to PCI DSS Standard

Semantics and Introduction to Footprinting

What is Semantics
Fuzzy Logic
Footprinting

Threats

Types of Threats
Threats against the Application
Threat modelling
Hands on

Threat modelling

Threat modelling with STRIDE model
Ways to Find Security Issues
Penetration Testing Tools
Modelling Models – Whiteboard Diagrams, Brainstorming, Structured Diagrams etc.
Trust Boundaries
Threat Trees
DREAD Model

Example of Attack

Vulnerability Scanning Tools

OpenVAS
Wapiti
Burp Suite Community
Metasploit

Threat Modelling with Different models

Various Threat Models
PASTA Model in Depth

Advanced concepts like network packet analysis

Network scanning
How to scan the network, overview of scanning
WireShark
Sniffing attacks
File Signature

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