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Upgrading from OpenSSH_5.9p1 to OpenSSH_6.5

Posted on 2014-03-12
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Last Modified: 2014-03-18
Platform: Ubuntu 12.04 LTS

Please share any articles on upgrading from OpenSSH_5.9p1 to OpenSSH_6.5.  

Question: Can I use apt-get to install openssh_6.5 and if I do will I have to reconfigure openssh from scratch or will the server retain the existing configuration settings?


root:~# ssh -v
OpenSSH_5.9p1 Debian-5ubuntu1.1, OpenSSL 1.0.1 14 Mar 2012
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Question by:cesemj
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Joseph Gan earned 2000 total points
ID: 39927832
I believe the old version of ssh and new version were installed in different directories, ie.
Old one under /usr/sbin/ssh
New one under /usr/local/bin/ssh

So you can install the new version following here:
http://www.linuxfromscratch.org/blfs/view/cvs/postlfs/openssh.html

Then manually link the older version of  'ssh' command to new version:
 
   # mv /usr/sbin/ssh /usr/sbin/ssh_old

   # ln -s /usr/local/bin/ssh /usr/sbin/ssh
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Author Comment

by:cesemj
ID: 39930418
Thank you, I will let you know how things turn out.
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Author Closing Comment

by:cesemj
ID: 39938705
Excellent guidance!!!
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