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ftpusers(5)

ftpusers(5)                      File Formats                      ftpusers(5)



NAME
       ftpusers - file listing users to be disallowed ftp login privileges

SYNOPSIS
       /etc/ftpd/ftpusers

DESCRIPTION
       The  ftpusers file lists users for whom ftp login privileges are disal‐
       lowed. Each ftpuser entry is a single line of the form:

         name



       where name is the user's login name.


       The FTP Server, in.ftpd, 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
         dladm
         smmsp
         listen
         gdm
         upnp
         xvm
         mysql
         openldap
         webservd
         svctag
         unknown
         nobody
         noaccess
         nobody4



       These entries match the default instantiated  entries  from  passwd(5).
       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  security  measure
       since  the  default  policy is to disallow remote logins for this iden‐
       tity. 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 mod‐
       ify the security policy in /etc/default/login to reflect the site secu‐
       rity policy for remote login access by root.


       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  instantiated in shadow(5), no login can be per‐
       formed.


       If a site adds similar administrative or system application  identities
       in  passwd(5)  and  shadow(5),  for example, majordomo, 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.

FILES
       /etc/ftpd/ftpusers    A file that lists users for whom ftp login privi‐
                             leges are disallowed by default.


       /etc/ftpusers         This is symbolic link to /etc/ftpd/ftpusers.


       /etc/default/login    Establishes login environment.


       /etc/passwd           Password file.


       /etc/shadow           Shadow password file.


ATTRIBUTES
       See attributes(7) for descriptions of the following attributes:


       tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) ATTRIBUTE  TYPEAT‐
       TRIBUTE  VALUE _ Availabilityservice/network/ftp _ Interface Stability‐
       See below.



       The Interface Stability for /etc/ftpd/ftpusers is Volatile.

SEE ALSO
       login(1), passwd(5), shadow(5), attributes(7), environ(7)



Oracle Solaris 11.4               7 Jan 2019                       ftpusers(5)
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