Following the below guide for Peap-mschap v2 I get the following error on the ACS "EAP-TLS or PEAP authentication failed during SSL handshake".
When I disable "Validate Server Certificate" on Win XP controlled wireless card I can connect straight away. What is the advantage/disadvantage with unticking "Validate Server Certificate"
First find out what encryption these devices support. I believe they do support WPA/WPA2 w/ PEAP. Devices don't need to be on the domain to work with this type of encryption.