yppasswdd, rpc.yppasswdd - server daemon for modifying the Network Informa-
tion Service (NIS) password file
/usr/sbin/rpc.yppasswdd file [-m arg1 arg2...]
The yppasswdd daemon is a server that handles password change requests from
yppasswd(1). It changes a password entry in the specified file, which is
assumed to be in the same format described in passwd(4). An entry in file
will be changed only if the password presented by yppasswd(1) matches the
encrypted password of that entry.
If the -m option is given, then after file is modified, a make(1) will be
performed in /var/yp. Any arguments following the option will be passed to
make. The -m option should be set only at a NIS master server machine.
This server is not run by default, nor can it be started up from inetd(8).
If it is desired to enable remote password updating for the NIS, then an
entry for yppasswdd should be put in the /sbin/init.d/nis file of the host
serving as the master for the NIS passwd file.
When enhanced security is installed and NIS is used to distribute the pro-
tected password authentication database, the yppasswdd daemon manages
writes to that database. A strict C2 security policy, which is option-
ally configurable using enhanced security, requires each user login or
login failure to be recorded in the protected password authentication data-
base. These updates, in combination with password changes and system
administration functions affecting user accounts, are coordinated by the
If the NIS password file is stored as /var/yp/src/passwd, then to have
password changes propagated immediately, the server should be invoked as:
/usr/sbin/rpc.yppasswdd /var/yp/src/passwd -m passwd DIR= /var/yp/src
Commands: yppasswd(1), ypmake(8)
Files: passwd(4), ypfiles(4)