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Securing Wi-Fi Networks

Published: 23 January 2021    Last Updated: 03 November 2022

We recently discussed how to break WPA2 keys very quickly using cloud computing. We've also looked at how to use a Rogue AP to capture user credentials from a network using PEAP (MSCHAP).

In this article we'll look at hardening Enterprise wireless networks from these attacks.

The most secure option is to utilise mutual authentication (where both the server and the client authenticate to each other) using digital certificate based authentication, such as offered by EAP-TLS. However, there can be more administrative overhead involved in the deployment of these networks and therefore PEAP may be offer a balance of security and overhead.

To be clear, we recommend the use of EAP-TLS wherever possible - but if you must use PEAP, we offer the following hardening steps:


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