EAP-TLS “Validate server cerficate” checkbox on Win XP

Hi all,

I have just found out that regardless of checking “Validate server cerficate” option on WIn XP, authentication succeeds in my WLAN environment. I wonder if this is the way it works or not.

Here is my question.

Is “Validate server cerficate” option is optional for EAP-TLS? or something wrong with our WLAN?

Thanks in advance.