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File Formats                                          d_passwd(4)

     d_passwd - dial-up password file


     A dial-up password is an  additional  password  required  of
     users  who  access  the  computer through a modem or dial-up
     port.  The correct password must be entered before the  user
     is granted access to the computer.

     d_passwd is an  ASCII file which contains a list of  execut-
     able  programs  (typically  shells)  that  require a dial-up
     password and the associated   encrypted  passwords.  When  a
     user  attempts  to  log in on any of the ports listed in the
     dialups file (see dialups(4)), the login  program  looks  at
     the  user's  login  entry  stored  in  the  passwd file (see
     passwd(4)), and  compares  the  login  shell  field  to  the
     entries  in   d_passwd.  These entries determine whether the
     user will be required to supply a dial-up password.

     Each entry in d_passwd is a single line of the form:



           The name of the login program that  will   require  an
           additional dial-up password.

           A 13-character encrypted  password.   Users  accessing
           the  computer  through  a  dial-up port or modem using
           login-shell will be required to  enter  this  password
           before gaining  access to the computer.

     d_passwd should be owned by the  root  user  and  the   root
     group.   The file should have read and write permissions for
     the owner (root) only.

     If the user's login program in the passwd file is not  found
     in   d_passwd  or  if  the  login  shell field in  passwd is
     empty, the user  must  supply  the  default  password.   The
     default  password is the entry for  /usr/bin/sh. If d_passwd
     has no entry for  /usr/bin/sh, then those users whose  login
     shell  field in  passwd is empty or does not match any entry
     in d_passwd will not be prompted for a dial-up password.

SunOS 5.9            Last change: 4 May 1994                    1

File Formats                                          d_passwd(4)

     Dial-up logins are disabled if d_passwd has only the follow-
     ing entry:


     Example 1: Sample d_passwd file.

     Here is a sample d_passwd file:


  Generating An Encrypted Password
     The  passwd (see  passwd(1)) utility can be used to generate
     the encrypted password for each login program.   passwd gen-
     erates encrypted passwords for users and places the password
     in  the  shadow  (see   shadow(4))  file.  Passwords for the
     d_passwd file will need to be generated by  first  adding  a
     temporary  user  id  using   useradd (see  useradd(1M)), and
     then using  passwd(1) to generate the  desired  password  in
     the   shadow  file.  Once the encrypted version of the pass-
     word has been created, it can be  copied  to  the   d_passwd

     For example:

     1. Type  useradd tempuser and press Return.  This creates  a
        user named  tempuser.

     2. Type passwd tempuser and press Return.  This  creates  an
        encrypted  password  for  tempuser  and  places it in the
        shadow file.

     3. Find the entry for tempuser in the shadow file  and  copy
        the  encrypted  password  to  the  desired  entry  in the
        d_passwd file.

     4. Type  userdel  tempuser  and  press  Return   to   delete

     These steps must be executed as the  root user.

           dial-up password file


SunOS 5.9            Last change: 4 May 1994                    2

File Formats                                          d_passwd(4)

           list of dial-up ports requiring dial-up passwords

           password file

           shadow password file

     passwd(1), useradd(1M), dialups(4), passwd(4), shadow(4)

     When creating a new dial-up  password,  be  sure  to  remain
     logged  in  on  at  least one terminal while testing the new
     password.  This ensures that there is an available  terminal
     from  which you can correct any mistakes that were made when
     the new password was added.

SunOS 5.9            Last change: 4 May 1994                    3