Hi all, I thought I would initially put his up for discussion on LUG. I have some questions relating to security and potential issues for users of the MRI facilities computers for processing and viewing MRI and NMR data. I will be in most cases responsible for making sure that users get their MRI data until we get a bonafide systems administrator. We will mainly be a Unix based facility. There will be many flavors of Unix. Currently we have RedHat, Debian, MacOSX (Darwin and X11, I guess I'll just call it Net/FreeBSD hotch potch). But most of our users will be using Windows or Macintosh (without Darwin X11) computers. To overcome software incompatibilities we have decided to make the software availble from our computers via X software such as X-Win32. My question is regarding security during remote connections. I would like to provide the users with XDMCP access. But something tells me that we are not behind a firewall. In which case I am reluctant to use XDMCP. Which leaves me with the ssh -X solution. I guess what I am really after is a secure XDMCP connection. 1. Does anybody know if there is such a thing. 2. Are we behind a firewall? 3. Is anyone running a Unix based network inside omrf.ouhsc.edu. 4. How have you provided access to specialist software? I'm open to all questions/suggestions/jibes etc. Thanks in advance. Cheers Yas Yasvir A. Tesiram Oklahoma Medical Research Foundation Dept. Free Radical Biology and Ageing 825 NE 13th St, OKC, OK, 73112, USA P: (405) 271 7126 F: (405) 271 1795 E: [log in to unmask]