Wireless Network Security ( Cs6526 / Fall 2014 )

Figure 8.3(a) demonstrates a portion of a wireless ad hoc network where a source node S has a data packet to be sent to a destination node that is

3. What is an ad hoc network? In this network, the wireless clients (stations) communicate directly with each

Integrity: This is the preventing of unauthorized modification of the information or data. It also helps in ensuring the accuracy of data, and making sure it is up to date. the controls that helps to protect integrity include the principles of least privilege, separation of duties.

Integrity: is to make sure that the content of the information has not been properly adjusted or tampered with.

The 802.11 provides the wireless LAN services for the clients, the access points, and the network connecting them. The association service is used by mobile stations to connect themselves to APs. Reassociation lets a station change its preferred AP. Either the station or the AP may also disassociate, breaking their relationship. Stations must authenticate to use a security scheme before they can send frames via the AP. With WPA2, the AP can talk to an authentication server that has a username and password database to determine if the station is allowed to access the network. Before WPA, WEP is used but it is easy to compromise. The distribution service determines the route for wireless or wired network. The integration service is used when

Integrity deals with maintaining the consistency, accuracy, and trustworthiness of data over its entire life cycle. Data must not be changed in the transition period, and steps must be taken to ensure that data is not altered by unauthorized people.

Wireless networks are considered vulnerable when an incident occurs that exploits the capability to perform the desired requirement of maintaining performance and concealment of data. Most vulnerabilities happen because of the science behind a wireless network, the fact that it uses air as a medium makes it harder to protects because the environment of air is not stable and when it comes to delivering sacred information you must be on

Some errors can be committed when manipulating delicate data. Integrity enables the recipient to ensure that the information he received by a sender is accurate.

Open network (no authentication and authorization):easily accessible by outsider or by any guest user. Anyone can access users (students, faculty)’s important information easily. No monitoring of network.

Different protocols for wireless security were used throughout the years. In 1997, Wired Equivalent Privacy (WEP) was introduced. It is a security algorithm that was part of the original 802.11 standard. It was suppose to provide data confidentiality comparable to that of wired networks. WEP has many well-known security flaws, is difficult to configure, and is easily broken.

The most important functionality that it offers is that it can help create an out-of-band stateful TCP connection between the attacker and the database which can then help us emulate an actual scenario where the system is under attack.

With the rapid development of wireless communication systems, there will be a need for the network deployment of independent mobile users [1]. Significant examples such as establishing survival, proficient, active communication for emergency/rescue operations, disaster management efforts, and secured military networks [2]. ]. Vehicular Ad-hoc Networks (VANETs) can be considered as a subclass of Mobile Ad hoc Networks (MANETs) with some unique characteristics. Vehicles move on the roads sharing information among them. Vehicles often move at high speed but their mobility is within regular constraints and predictable. An accurate estimate of vehicle’s position can be made available through GPS systems or on-board communication unit. VANETs

A mobile ad hoc network (MANET) is a continuously self-configuring, infrastructure-less network of mobile devices connected wirelessly. Each device

Present era is a “technological era”. Technological revolution is an inevitable concept that has brought drastic changes in the concept of communication, networking, IT etc. Information technology is growing at an alarming rate day by day. Corporate sectors, businesses tend to use complex technological and network environments. MANET is one such variant for technological revolution which is in a strong pace to gain popularity as they provide wireless connectivity irrespective of their geographic position. Apart from this there are numerous other privileges provided by this adhoc networking that has acted as a boon in the field of networking.

1.It should be a good authentication scheme if no adversary can force a receiver to accept a message for which it is not the intended receiver. So it should be forgery resistant.