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PAM_SSH(8) FreeBSD System Manager's Manual PAM_SSH(8) NAME pam_ssh -- SSH PAM module SYNOPSIS [service-name] module-type control-flag pam_ssh [options] DESCRIPTION The SSH authentication service module for PAM, pam_ssh provides function- ality for two PAM categories: authentication and session management. In terms of the module-type parameter, they are the ``auth'' and ``session'' features. It also provides null functions for the remaining categories. SSH Authentication Module The SSH authentication component provides a function to verify the iden- tity of a user (pam_sm_authenticate()), by prompting the user for a passphrase and verifying that it can decrypt the target user's SSH key using that passphrase. The following options may be passed to the authentication module: debug syslog(3) debugging information at LOG_DEBUG level. use_first_pass If the authentication module is not the first in the stack, and a previous module obtained the user's pass- word, that password is used to authenticate the user. If this fails, the authentication module returns failure without prompting the user for a password. This option has no effect if the authentication module is the first in the stack, or if no previous modules obtained the user's password. try_first_pass This option is similar to the use_first_pass option, except that if the previously obtained password fails, the user is prompted for another password. SSH Session Management Module The SSH session management component provides functions to initiate (pam_sm_open_session()) and terminate (pam_sm_close_session()) sessions. The pam_sm_open_session() function starts an SSH agent, passing it any private keys it decrypted during the authentication phase, and sets the environment variables the agent specifies. The pam_sm_close_session() function kills the previously started SSH agent by sending it a SIGTERM. The following options may be passed to the session management module: debug syslog(3) debugging information at LOG_DEBUG level. FILES $HOME/.ssh/identity SSH1/OpenSSH RSA key. $HOME/.ssh/id_dsa OpenSSH DSA key. $HOME/.ssh2/id_rsa_* SSH2 RSA keys. $HOME/.ssh2/id_dsa_* SSH2 DSA keys. SEE ALSO ssh-agent(1), syslog(3), pam.conf(5), pam(8) FreeBSD 11.1 November 26, 2001 FreeBSD 11.1
NAME | SYNOPSIS | DESCRIPTION | FILES | SEE ALSO
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