I am also working with a hybrid environment, a mixture of SGI, SuSE Linux, Redhat Linux, Windows, and recently OSX. We use ssh heavily, and I personally use Reflections X on my windose machine. We do not open up a xdmp session on the local machine. We tend to enable on a session via xhost + hostname on an as needed basis. It is my understanding that there is a firewall, but no rules have been established. thanks, Danny Yasvir Tesiram wrote: >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] > > -- thanks, Danny G Smith --------------------------------------------------------- Crystallography Core Computer Manager / Sr UNIX Sys Adm --------------------------------------------------------- Crystallography Dept Oklahoma Medical Research Foundation phone(405)271-8954 fax(405)271-7953 dept(405)271-1672 ========================================================= UNIX air conditioned environment, keep the windows closed