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Full Discussion: ssh: require passphrase from some servers but not others
Top Forums UNIX for Advanced & Expert Users ssh: require passphrase from some servers but not others Post 302333558 by jim mcnamara on Monday 13th of July 2009 11:20:34 AM
Old 07-13-2009
Do you mean ssh access sometimes w/key and sometimes wo/key from the same account and node?

No. You cannot decide to turn/off/on passwordless key for some jobs and not others for one single account. Access is on a per user account basis, not per job.

You should consider creating protected key-only account(s), and grant only certain users sudo to that account(s). Which is akin to your idea of 'session-level'

You could also create one or more remote ssh-only account, example dummy, then give the keys to certain users and not others. Those with the key can go in with
Code:
ssh dummy@somenode

You can create different remote user accounts which are job specific, granting code access by chrooting each account and having links in /usr/bin (or wherever) that give access only to the code/scripts needed to run just that job.
 

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LEARN ABOUT DEBIAN

eurephiadm-usercerts

eurephiadm usercerts(7) 												   eurephiadm usercerts(7)

NAME

       eurephiadm-usercerts
	- Managing user accounts and certificate relations

DESCRIPTION

       For  a  user  to  connect  to a eurephia enabled OpenVPN server, a user account must have been created and activated and an SSL certificate
       available to the user must have been registered.  The user account and certificate the user may use must then be linked together, and  this
       linking the eurephiadm usercert command takes care of.

       It  is also this relation which gives you the option to control which network resources the VPN clients may access, by assigning a firewall
       profile to such user-certificate links.

       Available modes for the usercerts command are:

       -A | --add
	      Register a new certificate and user-cert link

       -D | --delete
	      Delete a certificate and user-cert link

       -S | --set-fwprofile
	      Sets the firewall access profile for a user-cert link

       -l | --list
	      List all registered user-cert links

       -h | --help <mode>
	      Help about a specific mode

       The list mode will list all registered links between user accounts and certificates.

LIST MODE

       The list mode will show all registered user-certificate links

       -S | --sort <sort keys>
	      Define the sorting of the list

	      Valid sort keys are:

	      uid
	       Nummeric User ID

	      certid
	       Nummeric Certificate ID

	      accessprofile
	       Nummeric firewall profile ID

	      registered
	       According to when the user-cert was registered

	      uicid
	       Nummeric user-cert link ID

SET FW PROFILE MODE

       The set-fwprofile mode will update the firewall access profile for a given user-cert link

       Options: (both required)

       -n | --uicid
	      Unique record id of certificate and user account link

       -a | --accessprofile
	      Firewall profile ID

ADD MODE

       The add mode will register a new link between a user account and a certificate.

       -c | --certid
	      Required - Certificate ID

       -i | --uid
	      Required - User account ID

       -a | --accessprofile
	      Firewall profile ID to use for this access

DELETE MODE

       The delete mode will delete a link between a user account and a certificate.

       -c | --certid
	      Certificate ID

       -i | --uid
	      User account ID

       -n | --uicid
	      Unique record id of certificate and user account link

       -a | --accessprofile
	      Firewall profile ID

SEE ALSO

       eurephiadm-users(7), eurephiadm-certs(7), eurephiadm-fwprofiles(7)

AUTHOR

       Copyright (C) 2008-2010	David Sommerseth <dazo@users.sourceforge.net>

David Sommerseth						     July 2010						   eurephiadm usercerts(7)
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