Module 16: Hacking Wireless Networks
Hacking Wireless Networks
Objective
“Wireless network” refers to any type of computer network commonly associated with
telecommunications, whose interconnections between nodes are implemented without
the use of wires. Wireless telecommunications networks are generally implemented with
some type of remote information transmission system that uses electromagnetic waves
such as radio waves for the carrier. The implementation usually takes place at the
physical level or layer of the network.
The objective of this lab is to protect the wireless network from attackers.
In this lab, you will learn how to:
● Analyze Wireless Network Traffic using Wireshark
● Crack WEP using aircrack-ng
● Crack WPA using aircrack-ng
Scenario
Wireless network technology is becoming increasingly popular, but at the same time, it
has many security issues. A wireless local area network (WLAN) allows workers to
access digital resources without being tethered to their desks. However, the
convenience of WLANs also introduces security concerns that do not exist in a wired
world. Connecting to a network no longer requires an Ethernet cable. Instead, data
packets are airborne and available to anyone with the ability to intercept and decode
them. Several reports have explained weaknesses in the Wired Equivalent Privacy
(WEP) algorithm by 802.11x standard to encrypt wireless data.
To be an expert ethical hacker and penetration tester, you must have sound knowledge
of wireless concepts, wireless encryption, and their related threats. As a security
administrator, you must protect your company’s wireless network from hacking.
,Exercise: 1 WiFi Packet Analysis using Wireshark
A network monitoring system gives you a full overview of what’s going on in your
network at all times. A network monitor has the ability to manage multiple servers and
can also manage data from multiple devices such as switches, routers, firewalls, etc…
Learning to monitor your network is a great way to know the stress on yout network
infrastructure and to see what kind of demands it can handle form the users. By
knowing about all the overview information it helps you to troubleshoot your network
and a good amount of data to build your future growth plan for your networking
infrastructure.
Lab Scenario
Wireless networks can be open to active or passive attacks. These attacks include DoS,
MITM, spoofing, jamming, war driving, network hijacking, packet sniffing, and many
more. Passive attacks that take place on wireless networks are common and are
difficult to detect since the attacker usually just collects information. Active attacks
happen when a hacker has gathered information about the network after a successful
passive attack. Sniffing is the act of monitoring the network traffic using legitimate
network analysis tools. Hackers can use monitoring tools, including AiroPeek, Ethereal,
TCPDump, or Wireshark, to monitor the wireless networks. These tools allow hackers to
find an unprotected network that they can hack. Your wireless network can be protected
against this type of attack by using strong encryption and authentication methods.
Because you are the ethical hacker and penetration tester of an organization, you need
to check the wireless security and evaluate weaknesses present in your organization.
Lab Objective
The objective of this lab is to capture and analyze wireless packets in a network.
1. By default, Windows Server 2016 machine is selected by clicking
Ctrl+Alt+Delete.
Alternatively navigate to the Commands (Thunder icon) menu and click
, Ctrl+Alt+Delete.
2. In the Password field click Pa$$w0rd and press Enter to login.
Alternatively navigate to Commands (Thunder icon) menu Type Text and
Hacking Wireless Networks
Objective
“Wireless network” refers to any type of computer network commonly associated with
telecommunications, whose interconnections between nodes are implemented without
the use of wires. Wireless telecommunications networks are generally implemented with
some type of remote information transmission system that uses electromagnetic waves
such as radio waves for the carrier. The implementation usually takes place at the
physical level or layer of the network.
The objective of this lab is to protect the wireless network from attackers.
In this lab, you will learn how to:
● Analyze Wireless Network Traffic using Wireshark
● Crack WEP using aircrack-ng
● Crack WPA using aircrack-ng
Scenario
Wireless network technology is becoming increasingly popular, but at the same time, it
has many security issues. A wireless local area network (WLAN) allows workers to
access digital resources without being tethered to their desks. However, the
convenience of WLANs also introduces security concerns that do not exist in a wired
world. Connecting to a network no longer requires an Ethernet cable. Instead, data
packets are airborne and available to anyone with the ability to intercept and decode
them. Several reports have explained weaknesses in the Wired Equivalent Privacy
(WEP) algorithm by 802.11x standard to encrypt wireless data.
To be an expert ethical hacker and penetration tester, you must have sound knowledge
of wireless concepts, wireless encryption, and their related threats. As a security
administrator, you must protect your company’s wireless network from hacking.
,Exercise: 1 WiFi Packet Analysis using Wireshark
A network monitoring system gives you a full overview of what’s going on in your
network at all times. A network monitor has the ability to manage multiple servers and
can also manage data from multiple devices such as switches, routers, firewalls, etc…
Learning to monitor your network is a great way to know the stress on yout network
infrastructure and to see what kind of demands it can handle form the users. By
knowing about all the overview information it helps you to troubleshoot your network
and a good amount of data to build your future growth plan for your networking
infrastructure.
Lab Scenario
Wireless networks can be open to active or passive attacks. These attacks include DoS,
MITM, spoofing, jamming, war driving, network hijacking, packet sniffing, and many
more. Passive attacks that take place on wireless networks are common and are
difficult to detect since the attacker usually just collects information. Active attacks
happen when a hacker has gathered information about the network after a successful
passive attack. Sniffing is the act of monitoring the network traffic using legitimate
network analysis tools. Hackers can use monitoring tools, including AiroPeek, Ethereal,
TCPDump, or Wireshark, to monitor the wireless networks. These tools allow hackers to
find an unprotected network that they can hack. Your wireless network can be protected
against this type of attack by using strong encryption and authentication methods.
Because you are the ethical hacker and penetration tester of an organization, you need
to check the wireless security and evaluate weaknesses present in your organization.
Lab Objective
The objective of this lab is to capture and analyze wireless packets in a network.
1. By default, Windows Server 2016 machine is selected by clicking
Ctrl+Alt+Delete.
Alternatively navigate to the Commands (Thunder icon) menu and click
, Ctrl+Alt+Delete.
2. In the Password field click Pa$$w0rd and press Enter to login.
Alternatively navigate to Commands (Thunder icon) menu Type Text and
