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Full Discussion: Weird home key behavior
Top Forums UNIX for Dummies Questions & Answers Weird home key behavior Post 302297702 by chebarbudo on Saturday 14th of March 2009 05:13:54 PM
Old 03-14-2009
Great wempy!! Thank you so much!!
I'm used to shortcuts and I will definitely try to get used to those ones.
Is there any place where I can find a list of usualy available shortcuts.
By the way, echo $TERM output is the same on all my servers (including the one without home key support): xterm
 

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pam_ssh_agent_auth(8)							PAM						     pam_ssh_agent_auth(8)

PAM_SSH_AGENT_AUTH
       This module provides authentication via ssh-agent.  If an ssh-agent listening at SSH_AUTH_SOCK can successfully authenticate that it has
       the secret key for a public key in the specified file, authentication is granted, otherwise authentication fails.

SUMMARY
/etc/pam.d/sudo: auth sufficient pam_ssh_agent_auth.so file=/etc/security/authorized_keys /etc/sudoers: Defaults env_keep += "SSH_AUTH_SOCK" This configuration would permit anyone who has an SSH_AUTH_SOCK that manages the private key matching a public key in /etc/security/authorized_keys to execute sudo without having to enter a password. Note that the ssh-agent listening to SSH_AUTH_SOCK can either be local, or forwarded. Unlike NOPASSWD, this still requires an authentication, it's just that the authentication is provided by ssh-agent, and not password entry. ARGUMENTS
file=<path to authorized_keys> Specify the path to the authorized_keys file(s) you would like to use for authentication. Subject to tilde and % EXPANSIONS (below) allow_user_owned_authorized_keys_file A flag which enables authorized_keys files to be owned by the invoking user, instead of root. This flag is enabled automatically whenever the expansions %h or ~ are used. debug A flag which enables verbose logging sudo_service_name=<service name you compiled sudo to use> (when compiled with --enable-sudo-hack) Specify the service name to use to identify the service "sudo". When the PAM_SERVICE identifier matches this string, and if PAM_RUSER is not set, pam_ssh_agent_auth will attempt to identify the calling user from the environment variable SUDO_USER. This defaults to "sudo". EXPANSIONS
~ -- same as in shells, a user's Home directory Automatically enables allow_user_owned_authorized_keys_file if used in the context of ~/. If used as ~user/, it would expect the file to be owned by 'user', unless you explicitely set allow_user_owned_authorized_keys_file %h -- User's Home directory Automatically enables allow_user_owned_authorized_keys_file %H -- The short-hostname %u -- Username %f -- FQDN EXAMPLES
in /etc/pam.d/sudo "auth sufficient pam_ssh_agent_auth.so file=~/.ssh/authorized_keys" The default .ssh/authorized_keys file in a user's home-directory "auth sufficient pam_ssh_agent_auth.so file=%h/.ssh/authorized_keys" Same as above. "auth sufficient pam_ssh_agent_auth.so file=~fred/.ssh/authorized_keys" If the home-directory of user 'fred' was /home/fred, this would expand to /home/fred/.ssh/authorized_keys. In this case, we have not specified allow_user_owned_authorized_keys_file, so this file must be owned by 'fred'. "auth sufficient pam_ssh_agent_auth.so file=/secure/%H/%u/authorized_keys allow_user_owned_authorized_keys_file" On a host named foobar.baz.com, and a user named fred, would expand to /secure/foobar/fred/authorized_keys. In this case, we specified allow_user_owned_authorized_keys_file, so fred would be able to manage that authorized_keys file himself. "auth sufficient pam_ssh_agent_auth.so file=/secure/%f/%u/authorized_keys" On a host named foobar.baz.com, and a user named fred, would expand to /secure/foobar.baz.com/fred/authorized_keys. In this case, we have not specified allow_user_owned_authorized_keys_file, so this file must be owned by root. v0.8 2009-08-09 pam_ssh_agent_auth(8)
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