I'm not sure how this well known feature of Metaframe is a security hole. If you are really that worried about security you probably shouldn't be mapping drives (or anything else). You can also control read/write access to all client drives using the webica.ini file described in CTX568194 -----Original Message----- From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf Of Pedigo Michael-G17060 Sent: August 20, 2004 11:37 AM To: 'thin@xxxxxxxxxxxxx' Subject: [THIN] How widespread is the knowledge of this security loop-hole? Hi All, I was recently enlightened on what I consider a fairly major security loop-hole in Metaframe... Maybe the rest already know.... The wonderful feature of mapping your local hard drives.....you can also map the network drives of the client via hidden shares...this could be really bad...right??? I personally don't like security by obscurity. I raised the issue to Citrix....but they didn't say much. I suggested they modify the client and Management console to allow to allow/deny each drive separately to tighten up this security risk. Am I crazy or do you see where I am coming from? Perhaps you might want to let Citrix know too...