Pre-Shared Key (PSK)

Authentication is very important for networks. In wireless networks, there are different authentication types. One of these wireless authentication types is Pre-Shared Key (PSK). In this lesson, we will learn the details of Pre-Shared Key (PSK) and we will learn Cisco PSK Configuration. Let’s firstly start with what is PSK?



What is PSK?

Pre-Shared Key (PSK) is an authentication type which is used in wireless networks. With PSK Authentication, a key string is used to authenticate the clients in the wireless network. So, on each wireless client, PSK should be configured with the same Pre-Shared Key in the network.


Pre-Shared Key (PSK) uses WPA (Wi-Fi Protected Access). There are three versions of WPA. These WPA Types are given below:

  • WPA
  • WPA2
  • WPA3


We have talked about the details of WPA (Wi-Fi Protected Access) versions in another lesson.



You can also check Cisco Packet Tracer Configuration Examples and Cisco GNS3 Examples


What is WPA?

WPA (Wi-Fi Protected Access) is basically a network security protocol used in wireless networks. The aim of this network security protocol is to secure the wireless networks.


WPA (Wi-Fi Protected Access) supports two different authentication methods. These WPA authentication methods are given below:

  • Personal
  • Enterprise



Benefits of PSK

To use Pre-Shared Key (PSK) in a wireless network, there are different benefits. These are given below:

  • Firstly, PSK is a simple protocol which we can setup easily.
  • Any user can easily configure PSK in a wireless network. It is very user friendly.
  • Pre-Shared Key (PSK) is a good alternative for the devices that do not support 1x.


Beside these benefits, there are also some disadvantages of using PSK. These disadvantages are given below:

First of all, all the devices which uses this authentication has the same Pre-Shared Key. This is a security risk for wireless networks.


It is difficult to identify any device in the network with this same Pre-Shared Key.


Using same key in the network needs more key change not to be open malicious threats.


Back to: CCNP Enterprise 350-401 ENCOR > Wireless Security

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CCNP Enterprise 350-401 ENCOR