Library /sys$common/syshlp/dbg$help.hlb DEBUG, CONNECT, Qualifiers, /PASSWORD  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /PASSWORD="password"

    (Alpha only) When you are debugging the Alpha operating
    system, specifies the password for the machine to which you
    are connecting (the target machine running the Alpha operating
    system). If a password has not been established for that machine,
    this qualifier can be omitted.