HP Integrity NonStop H-Series - Manual (Page 98)

Disallowing Logons
The system administrator can disallow logons by simply creating a file, named FTPUSERS, secured
for restricted access. FTPUSERS is an ASCII-coded edit file (type 101) that resides on
$SYSTEM.ZTCPIP
.
The FTPUSERS file contains a list of users for whom logons are disallowed. Comment lines can
be prefixed with the number symbol (#) in the first column. User names and aliases are entered
into this file by the system administrator. The user names and aliases that do not conform to the
Guardian group-name,user-name format are case sensitive when checked by the FTP server
to determine which logons are disallowed. The user names in the Guardian format are not case
sensitive when checked.
NOTE: Aliases associated with the OSS anonymous user are a special case and are required
only to be entered in the FTPUSERS file as lowercase characters.
Example
The following example illustrates an FTPUSERS file:
# This file describes the names of the users for which
# FTP logons will be denied. The name of the file is
# $SYSTEM.ZTCPIP.FTPUSERS
super.super
super.operator
null.ftp
guest
student
OssGuest
ftp
Accessing Either Guardian or OSS File Systems
The FTP server allows a client to access either the Guardian file system or the OSS file system.
Switching back and forth between the two file systems can be accomplished using the quote
command from the FTP client followed by the character string “Guardian” or “OSS”.
For example:
quote Guardian accesses the Guardian file system.
quote OSS accesses the OSS file system.
Once you have logged in, you can determine the active file system using the pwd command. If
the result of this command is either in the form /G/volume/subvolume or an OSS path name,
the OSS file system is active. If the result is in the form $volume.subvolume, the Guardian file
system is active.
NOTE: The quote Guardian/OSS command is disabled for the anonymous user.
98 Communicating With the FTP Server