Sorry.. just something very confuse. I am using a FreeBsd computer as my NAS, may I know what is the nastype for this NAS? Is it "other"? I know when the nastype is "other", the radius server won't call for the checkrad. Therefore, if I want to use the checkrad to check for the simultaneous-use, what should I do? Do I really need to modify the script in the checkrad?? Any reference on how to modify the script in the checkrad? I am seeking it for a long time already through the internet but nothing was found. It is not much information about the checkrad. Please knidly reply. Thanks! Regards Felix ___________________________________________________________ Yahoo! Messenger - NEW crystal clear PC to PC calling worldwide with voicemail http://uk.messenger.yahoo.com