Linux and UNIX Man Pages

Test Your Knowledge in Computers #284
Difficulty: Easy
AIX (Advanced Interactive eXecutive) is a series of proprietary Unix operating systems developed and sold by Digital Equipment Corporation (DEC) for several of its computer platforms.
True or False?
Linux & Unix Commands - Search Man Pages

(redhat section 5)
man page for pam_dhkeys

pam_dhkeys(5)						Standards, Environments, and Macros					     pam_dhkeys(5)

NAME
pam_dhkeys - authentication Diffie-Hellman keys management module SYNOPSIS
pam_dhkeys.so.1 DESCRIPTION
The pam_dhkeys.so.1 service module provides functionality to two PAM services: Secure RPC authentication and Secure RPC authentication token management. Secure RPC authentication differs from regular unix authentication because NIS+ and other ONC RPCs use Secure RPC as the underlying secu- rity mechanism. The following options may be passed to the module: debug syslog(3C) debugging information at LOG_DEBUG level nowarn Turn off warning messages Authentication Services If the user has Diffie-Hellman keys, pam_sm_authenticate() establishes secret keys for the user specified by the PAM_USER (equivalent to running keylogin(1)), using the authentication token found in the PAM_AUTHTOK item. Not being able to establish the secret keys results in an authentication error if the NIS+ repository is used to authenticate the user and the NIS+ table permissions require secure RPC creden- tials to access the password field. If pam_sm_setcred() is called with PAM_ESTABLISH_CRED and the user's secure RPC credentials need to be established, these credentials are set. This is equivalent to running keylogin(1). If the credentials could not be set and PAM_SILENT is not specified, a diagnostic message is displayed. If pam_setcred() is called with PAM_DELETE_CRED, the user's secure RPC credentials are unset. This is equivalent to running keylogout(1). PAM_REINITIALIZE_CRED and PAM_REFRESH_CRED are not supported and return PAM_IGNORE. Authentication Token Management The pam_sm_chauthtok() implementation checks whether the old login password decrypts the users secret keys. If it doesn't this module prompts the user for an old Secure RPC password and stores it in a pam data item called SUNW_OLDRPCPASS. This data item can be used by the store module to effectively update the users secret keys. ERRORS
The authentication service returns the following error codes: PAM_SUCCESS Credentials set successfully. PAM_IGNORE Credentials not needed to access the password repository. PAM_USER_UNKNOWN PAM_USER is not set, or the user is unknown. PAM_AUTH_ERR No secret keys were set. PAM_AUTHTOK is not set, no credentials are present or there is a wrong password. PAM_BUF_ERR Module ran out of memory. PAM_SYSTEM_ERR The NIS+ subsystem failed . The authentication token management returns the following error codes: PAM_SUCCESS Old rpc password is set in SUNW_OLDRPCPASS PAM_USER_UNKNOWN User in PAM_USER is unknown. PAM_AUTHTOK_ERR User did not provide a password that decrypts the secret keys. PAM_BUF_ERR Module ran out of memory. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ |MT Level |MT-Safe with exceptions | +-----------------------------+-----------------------------+ SEE ALSO
keylogin(1), keylogout(1), pam(3PAM), pam_authenticate(3PAM), pam_chauthtok(3PAM), pam_setcred(3PAM), pam_get_item(3PAM), pam_set_data(3PAM), pam_get_data(3PAM), syslog(3C), libpam(3LIB), pam.conf(4), attributes(5), pam_authtok_check(5), pam_authtok_get(5), pam_authtok_store(5), pam_passwd_auth(5), pam_unix_account(5), pam_unix_auth(5), pam_unix_session(5) NOTES
The interfaces in libpam(3LIB) are MT-Safe only if each thread within the multi-threaded application uses its own PAM handle. The pam_unix(5) module is no longer supported. Similar functionality is provided by pam_authtok_check(5), pam_authtok_get(5), pam_auth- tok_store(5), pam_dhkeys(5), pam_passwd_auth(5), pam_unix_account(5), pam_unix_auth(5), and pam_unix_session(5). SunOS 5.10 21 Jan 2003 pam_dhkeys(5)

Featured Tech Videos