We modified the server toĪutomatically create certificates based on the realm (domain name) Simple solution was to modify the server. Since we are the authors of FreeRADIUS, the Obvious “fake” certificate, then the user could trivially tell that We still needed a server certificate, though. To our own RADIUS server, instead of the real one. To test this theory, we created a malicious network. Systems from connecting to malicious networks. In an ideal world, this configuration would prevent the Test system was preconfigured with the correct information for the We ran tests with some common operating systems, as shown below. Instead of sending credentials only to trusted servers, EAP clientsįollow the practice of “I have no idea who you are, but you can still

Ideal world, that trust would be automatically verified, as with The question, then, is “How can a user trust an EAP server?” In an “flying blind” with network access, and can only hand your passwordsīlindly to a random server which does something with them. No such information is available for EAP. The problem is that when you log into a web site with a browser, theĪddress bar shows both the URL (or domain name), and a “lock” icon. Like HTTPS, these methods use TLS and certificates in order to authenticate the parties involved. Sends EAP packets to the AP, which in turn sends them to a RADIUS To an Access Point (AP), the device has to use Practice, this means that the when the end-user device wants to talk WPA (and WPA2) Enterprise use 802.1X for secure network access. This article is based on a 2016 presentation done by Arran Cudbard-Bell at NetworkShop

To send user credentials such as names and passwords to pretty much In this article, we show just how easy it is to convince supplicants Infrastructure and the rest of your network. You can spend as much time as you want securing your RADIUS

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