<div dir="ltr"> I have followed exactly the instruction but still with the same problem. 135 ssh-keygen -t dsa 137 cd .ssh/ 139 cat id_dsa.pub >> authorized_keys2 141 chmod 644 authorized_keys2 when I do ssh localhost , i get still this oar@lion:~$ ssh localhost Enter passphrase for key '/home/oar/.ssh/id_dsa': Linux lion 2.6.24-19-generic #1 SMP Wed Aug 20 22:56:21 UTC 2008 i686 The programs included with the Ubuntu system are free software; the exact distribution terms for each program are described in the individual files in /usr/share/doc/*/copyright. Ubuntu comes with ABSOLUTELY NO WARRANTY, to the extent permitted by applicable law. To access official Ubuntu documentation, please visit: <a href="http://help.ubuntu.com/">http://help.ubuntu.com/</a> Last login: Sun Aug 31 14:09:28 2008 from localhost oarsh: The OAR_KEY environment variable is not defined and this seems to be a oar user connection. oarsh: See 'Important notes' part of the 'CPUSET installation' section of the OAR documentation. Connection to localhost closed. <div class="gmail_quote">2008/8/31 Mario Vukelic <<a href="mailto:mario.vukelic@dantian.org">mario.vukelic@dantian.org</a>> <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div class="Ih2E3d">On Sun, 2008-08-31 at 11:47 +0200, Adel ESSAFI wrote: > What are other reasons that can causes that! </div>Wait a minute, rom the command listing in your original post it seems that you might have generated and added the public key on the same machine, is that correct? You need to generate id_dsa.pub on the local machine, then copy it to the remote host and add it _there_ to ~/.ssh/authorized_keys2 If you follow the instructions on <a href="https://help.ubuntu.com/8.04/serverguide/C/openssh-server.html" target="_blank">https://help.ubuntu.com/8.04/serverguide/C/openssh-server.html</a> to the letter, it should be fine. -- <div><div></div><div class="Wj3C7c">ubuntu-users mailing list <a href="mailto:ubuntu-users@lists.ubuntu.com">ubuntu-users@lists.ubuntu.com</a> Modify settings or unsubscribe at: <a href="https://lists.ubuntu.com/mailman/listinfo/ubuntu-users" target="_blank">https://lists.ubuntu.com/mailman/listinfo/ubuntu-users</a> </div></div></blockquote></div> -- PhD candidate in Computer Science Address BP 108, Bureau de poste Tunis republique 1001 Tunis Tunisia tel: +216 97 246 706 fax: +216 71 391 166 </div>