Hi All, I am using free radius server with dot1X. and supplicant is on windows XP. Here when I use user name <= 3 letters I am getting following error... 1. Received packet from 192.168.112.90 with invalid Message-Authenticator! (Shared secret is incorrect.) and for user name <=3 my client is getting following error. 2. Malformed RADIUS packet from host 192.168.0.1: too short (length 17 < minimum 20). where as radius RFC say... user name length can be >= 3. since user name goes as part of attributes in radius packet... but errors we are getting are totally different. I mean first we are getting related to message-authenticator where as we are passing username with length <=3. and second error my client getting is related to packet length...another interesting thing is we get these errors only for PEAP configuration.... this will work for MD5 and others. can any one help me in this. whether we are getting different errors because both of us may be using different versions of RADIUS server? just a guess. This error may be because of RADIUS client or server? Thanx in Advance... ---Raghu. The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain proprietary, confidential or privileged information. If you are not the intended recipient, you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately and destroy all copies of this message and any attachments. WARNING: Computer viruses can be transmitted via email. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email. www.wipro.com