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I have a SSH + LDAP installation with users public keys stored in LDAP.

I want that when some user in a list (configured into server) do a ssh connection with ssh user@server always log in as root. user user not exists on server, only on LDAP.

Now I have working this steps if I have configured my LDAP uid as root and ssh connection is ssh root@server.

But I need to login with ssh user@server.

Is SSH able to do this map?

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On the SSH server, try adding the following line to bottom of /etc/passwd for the ldap user:

user:x:0:0::/root:/bin/bash

(replace user with the ldap username)

This will map the username user to root. I know it works if you have a corresponding entry in the shadow file and log in using that type of auth. So hopefully will work without the shadow entry for LDAP.

  • Users should not exists on server, only on LDAP, and once checked public key, must be log in as root. Maybe is not possible. – Lito Mar 14 '17 at 20:51
  • With my answer the user does not really exist on the server. Is just a mapping to root. – bao7uo Mar 14 '17 at 23:25
  • Yes, but I need to configure the "virtual" user in /etc/passwd. I need some solution only LDAP dependent. Thanks anyway :) – Lito Mar 15 '17 at 8:44
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    AFAIK it's not possible the way you want :-) – bao7uo Mar 15 '17 at 10:42

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