Wireless networks are being extensively used nowadays because of their benefits like no wires and reduced cost. Still, these added benefits do not come without their disadvantages as wireless networks like everything else, have their vulnerabilities. The shared nature of wireless networks makes it vulnerable to attacks. Messages of vital importance can be jammed or interrupted; unwanted messages could be added to the system or attackers could hinder the overall wireless transmission.
What is Jamming
Jamming is a way to cause interference in a signal, which would then, in turn, make the message unreadable, making it a way attackers use to degrade the performance of the wireless network.
Sending frequency signals or hindering the transmission of the message, so its intended meaning does not reach the receiver, is jamming in its purest DevOps training.
Jamming can be divided into two categories:
Internal threat: Here, the jammer is part of the network.
External threat: Externally, the jammer is not part of the network.
Different types of jammers
Malicious wireless nodes to cause deliberate interference on the victim wireless network is called a jammer. The radio transmitter power, location, and influence on the node are all the things that affect the jamming power of a jammer.
To make the jamming as effective as possible, different ways must be employed by the jammer to reach the desired result. Depending on its procedure, a jammer can either be elementary or more advanced. Primarily, jammers are simply divided into two groups, which are called proactive and reactive, while the advanced ones are divided into function-specific and smart-hybrid.
Proactive jammer: Proactive jammer’s primary characteristic is that they transfer interfering signals regardless of the data communication flow.
Deceptive jammer: Deceptive jammer transfer data in a regular packet rather than in bits. Example of which is random jammers.
Reactive jammer: It jams only when there is an activity that occurred on any particular channel. It is resulting in damaging the responsive message, disrupting larger or smaller sized packet.
Function-specific jammers: When working with function-specific jammers, you should assign it a particular function to be operated on.
Pulsed-noise jammer: In this kind of jammers, you have to switch between different bandwidth varying the channels and jam on DevOps courses
Anti-jamming in wireless mobile networks
The countermeasure regarding jamming detection is determined in static systems. The problem transforms into a more complex form when the jammers are attached to cellular networks. One of the open issues is still the practical approach of mobile networks. Most anti-jamming devices have a fast mechanism for detecting and reacting. As the jammers can be portable, anti-jammers also have the prevention depending on the location.
So, far we have learned different types and techniques of jamming and anti-jamming. One thing we should be aware of that other type of jammers approaches the wireless connection in different ways. They all have their mechanism to disrupt the network. All in all, powerful jammers are hard to locate. It should be placed somewhere the signals can be dispersed quickly, to make it more effective.