kas examine - Displays information from an Authentication Database entry

kas examine << -name <name of user >>> [-showkey] << [-admin_username <admin principal to use for authentication] >>> << [-password_for_admin <admin password] >>> << [-cell <cell name] >>> << [-servers <explicit list of authentication servers+] >>> [-noauth] [-help]

kas e << -na <name of user >>> [-sh] << [-a <admin principal to use for authentication] >>> << [-p <admin password] >>> << [-c <cell name] >>> << [-se <explicit list of authentication servers+] >>> [-no] [-h]

The kas examine command formats and displays information from the Authentication Database entry of the user named by the -name argument.

To alter the settings displayed with this command, issue the kas setfields command.

Displaying actual keys on the standard output stream by including the -showkey flag constitutes a security exposure. For most purposes, it is sufficient to display a checksum.

Names the Authentication Database entry from which to display information. Displays the octal digits that constitute the key. The issuer must have the CWADMIN flag on his or her Authentication Database entry. Specifies the user identity under which to authenticate with the Authentication Server for execution of the command. For more details, see the kas(8) manpage. Specifies the password of the command's issuer. If it is omitted (as recommended), the kas command interpreter prompts for it and does not echo it visibly. For more details, see the kas(8) manpage. Names the cell in which to run the command. For more details, see the kas(8) manpage. Names each machine running an Authentication Server with which to establish a connection. For more details, see the kas(8) manpage. Assigns the unprivileged identity CWanonymous to the issuer. For more details, see the kas(8) manpage. Prints the online help for this command. All other valid options are ignored.

The output includes: The entry name, following the string CWUser data for. One or more status flags in parentheses; they appear only if an administrator has used the kas setfields command to change them from their default values. A plus sign (CW+) separates the flags if there is more than one. The nondefault values that can appear, and their meanings, are as follows: Enables the user to issue privileged kas commands (default is CWNOADMIN). Prevents the user from obtaining tickets from the Authentication Server's Ticket Granting Service (default is CWTGS). Prevents the Ticket Granting Service from using the entry's key field as an encryption key (default is CWSEAL). Prevents the user from changing his or her password (default is CWCPW). The key version number, in parentheses, following the word CWkey, then one of the following. A checksum equivalent of the key, following the string CWcksum is, if the -showkey flag is not included. The checksum is a decimal number derived by encrypting a constant with the key. In the case of the CWafs entry, this number must match the checksum with the corresponding key version number in the output of the bos listkeys command; if not, follow the instructions in the IBM AFS Administration Guide for creating a new server encryption key. The actual key, following a colon, if the -showkey flag is included. The key consists of eight octal numbers, each represented as a backslash followed by three decimal digits. The date the user last changed his or her own password, following the string CWlast cpw (which stands for last change of password"). The string CWpassword will never expire indicates that the associated password never expires; the string CWpassword will expire is followed by the password's expiration date. After the indicated date, the user cannot authenticate, but has 30 days after it in which to use the kpasswd or kas setpassword command to set a new password. After 30 days, only an administrator (one whose account is marked with the CWADMIN flag) can change the password by using the kas setpassword command. To set the password expiration date, use the kas setfields command's -pwexpires argument. The number of times the user can fail to provide the correct password before the account locks, followed by the string CWconsecutive unsuccessful authentications are permitted, or the string CWAn unlimited number of unsuccessful authentications is permitted to indicate that there is no limit. To set the limit, use the kas setfields command's -attempts argument. To unlock a locked account, use the kas unlock command. The kas setfields reference page discusses how the implementation of the lockout feature interacts with this setting. The number of minutes for which the Authentication Server refuses the user's login attempts after the limit on consecutive unsuccessful authentication attempts is exceeded, following the string CWThe lock time for this user is. Use the kas command's -locktime argument to set the lockout time. This line appears only if a limit on the number of unsuccessful authentication attempts has been set with the the kas setfields command's -attempts argument. An indication of whether the Authentication Server is currently refusing the user's login attempts. The string CWUser is not locked indicates that authentication can succeed, whereas the string CWUser is locked until time indicates that the user cannot authenticate until the indicated time. Use the kas unlock command to enable a user to attempt authentication. This line appears only if a limit on the number of unsuccessful authentication attempts has been set with the kas setfields command's -attempts argument. The date on which the Authentication Server entry expires, or the string CWentry never expires to indicate that the entry does not expire. A user becomes unable to authenticate when his or her entry expires. Use the kas setfields command's -expiration argument to set the expiration date. The maximum possible lifetime of the tokens that the Authentication Server grants the user. This value interacts with several others to determine the actual lifetime of the token, as described in the klog(1) manpage. Use the kas setfields command's -lifetime argument to set this value. The date on which the entry was last modified, following the string CWlast mod on and the user name of the administrator who modified it. The date on which a user changed his or her own password is recorded on the second line of output as CWlast cpw instead. An indication of whether the user can reuse one of his or her last twenty passwords when issuing the kpasswd, kas setpassword, or kas setkey commands. Use the kas setfields command's -reuse argument to set this restriction.

The following example command shows the user smith displaying her own Authentication Database entry. Note the CWADMIN flag, which shows that CWsmith is privileged.

   % kas examine smith
   Password for smith:
   User data for smith (ADMIN)
    key (0) cksum is 3414844392,  last cpw: Thu Mar 25 16:05:44 1999
    password will expire:  Fri Apr 30 20:44:36 1999
    5 consecutive unsuccessful authentications are permitted.
    The lock time for this user is 25.5 minutes.
    User is not locked.
    entry never expires. Max ticket lifetime 100.00 hours.
    last mod on Tue Jan 5 08:22:29 1999 by admin
    permit password reuse

   % kas examine pat
   Password for pat:
   User data for pat
    key (0) cksum is 73829292912,  last cpw: Wed Apr 7 11:23:01 1999
    password will expire:  Fri  Jun 11 11:23:01 1999
    5 consecutive unsuccessful authentications are permitted.
    The lock time for this user is 25.5 minutes.
    User is locked until Tue Sep 21 12:25:07 1999
    entry expires on never. Max ticket lifetime 100.00 hours.
    last mod on Thu Feb 4 08:22:29 1999 by admin
    permit password reuse

   % kas examine -name afs -showkey
   Password for admin: I<admin_password>
   User data for afs
    key (12): \357\253\304\352\234\236\253\352, last cpw: no date
    entry never expires. Max ticket lifetime 100.00 hours.
    last mod on Thu Mar 25 14:53:29 1999 by admin
    permit password reuse

A user can examine his or her own entry. To examine others entries or to include the -showkey flag, the issuer must have the CWADMIN flag set in his or her Authentication Database entry.

the bos_addkey(8) manpage, the bos_listkeys(8) manpage, the bos_setauth(8) manpage, the kas(8) manpage, the kas_setfields(8) manpage, the kas_setpassword(8) manpage, the kas_unlock(8) manpage, the klog(1) manpage, the kpasswd(1) manpage

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This documentation is covered by the IBM Public License Version 1.0. It was converted from HTML to POD by software written by Chas Williams and Russ Allbery, based on work by Alf Wachsmann and Elizabeth Cassell.