Library /sys$common/syshlp/ncphelp.hlb SET, MODULE, X25-SERVER, DESTINATION dest-name, PASSWORD password  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 Specifies the password used in connecting to a host node for
 incoming calls to a destination.  Specify a string of from 1
 to 39 characters.  The default is that no password is used.