HOSTS.EQUIV(SFF)                           UNIX System V



     Name
          hosts.equiv - list of trusted hosts


     Description
          Hosts.equiv resides in directory /etc and contains a list of
          trusted  hosts.   When  an rlogin(1) or rcmd(1) request from
          such a host is made, and the initiator of the request is  in
          /etc/passwd,  then  no  further  validity  checking is done.
          That is, rlogin does not prompt  for  a  password,  and  rsh
          completes    successfully.     So    a    remote   user   is
          ``equivalenced'' to a local user with the same user ID  when
          the remote user is in hosts.equiv.

          The format of hosts.equiv is a list of  names,  as  in  this
          example:

                host1
                host2

          A line consisting of a simple host name  means  that  anyone
          logging  in from that host is trusted.  The .rhosts file has
          the same format as  hosts.equiv.   When  user  XXX  executes
          rlogin  or  rcmd, the .rhosts file from XXX's home directory
          is conceptually concatenated onto the end of hosts.equiv for
          permission  checking.   In the special case when the user is
          the super-user then only the /.rhosts file is checked.

          It is also possible to have  two  entries  (separated  by  a
          single  space)  on  a line of these files.  In this case, if
          the remote host is equivalenced by the first entry, then the
          user  named  by  the  second  entry  is allowed to log in as
          anyone, that is, specify any name to the -l  flag  (provided
          that name is in the /etc/passwd file, of course).  Thus

               laidbak ez

          allows ez to log in from laidbak as anyone.  The usual usage
          would  be  to put this entry in the .rhosts file in the home
          directory for derek . Then ez  may  log  in  as  derek  when
          coming from laidbak.


     Files
          /etc/hosts.equiv
          $HOME/.rhost


     See Also
          rlogin(TC), rcmd(TC)


     (printed 8/17/89)                          HOSTS.EQUIV(SFF)