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File Formats ftpusers(4)
NAME
ftpusers - file listing users to be disallowed ftp login
privileges
SYNOPSIS
/etc/ftpd/ftpusers
The ftpusers file lists users for whom ftp login privileges
are disallowed. Each ftpuser entry is a single line of the
form:
name
where name is the user's login name.
The FTP Server, in.ftpd(1M), reads the ftpusers file. If the
login name of the user matches one of the entries listed, it
rejects the login attempt.
The ftpusers file has the following default configuration
entries:
root
daemon
bin
sys
adm
lp
uccp
nuucp
smmsp
listen
nobody
noaccess
nobody4
These entries match the default instantiated entries from
passwd(4). The list of default entries typically contains
the superuser root and other administrative and system
application identities.
The root entry is included in the ftpusers file as a secu-
rity measure since the default policy is to disallow remote
logins for this identity. This policy is also set in the
default value of the CONSOLE entry in the /etc/default/login
file. See login(1). If you allow root login privileges by
deleting the root entry in ftpusers, you should also modify
the security policy in /etc/default/login to reflect the
site security policy for remote login access by root.
SunOS 5.10 Last change: 1 May 2003 1
File Formats ftpusers(4)
Other default entries are administrative identities that are
typically assumed by system applications but never used for
local or remote login, for example sys and nobody. Since
these entries do not have a valid password field instan-
tiated in shadow(4), no login can be performed.
If a site adds similar administrative or system application
identities in passwd(4) and shadow(4), for example, major-
domo, the site should consider including them in the
ftpusers file for a consistent security policy.
Lines that begin with # are treated as comment lines and are
ignored.
/etc/ftpd/ftpusers A file that lists users for whom
ftp login privileges are disallowed.
/etc/ftpusers See /etc/ftpd/ftpusers. This file is
deprecated, although its use is
still supported.
/etc/default/login
/etc/passwd password file
/etc/shadow shadow password file
See attributes(5) for descriptions of the following attri-
butes:
____________________________________________________________
ATTRIBUTE TYPE ATTRIBUTE VALUE
____________________________________________________________
Availability SUNWftpr
____________________________________________________________
Interface Stability External
/etc/ftpd/ftpusers
SunOS 5.10 Last change: 1 May 2003 2
File Formats ftpusers(4)
____________________________________________________________
Interface Stability Obsolete
/etc/ftpusers
____________________________________________________________
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|login(1), in.ftpd(1M), ftpaccess(4), ftphosts(4), passwd(4)
|shadow(4), attributes(5), environ(5) |
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SunOS 5.10 Last change: 1 May 2003 3