827a1893_V5_9_Management_Guide_ch25_htm__Value
[Keyword] PermitRootLogin [Default] N [Description] Specifies whether the user can log in as SYSTEM using SSH. This keyword may be set to: yes allows SYSTEM logins through any of the authentication types allowed for other users. no (default) disables SYSTEM logins through any of the authentication methods (nopwd and no are equivalent), unless you have a rhosts or SYS$DISK:[.SSH]AUTHORIZED_KEYS file in the SYS$MANAGER directory. nopwd disables password-authenticated SYSTEM logins. System login with RSA authentication when the "command" option has been specified is allowed regardless of the value of this keyword (which may be useful for taking remote backups even if SYSTEM login is not allowed). [Value] 
Y/N
TCPware V5.9 Management Guide ch25.htm
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