Want to block ftp for root user Post: 302106178

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LEARN ABOUT SUNOS

ftpusers

ftpusers(4)															       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 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 modify the security policy in /etc/default/login to reflect the
       site security 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(4), no login can be per-
       formed.

       If a site adds similar administrative or system application identities in passwd(4) and shadow(4), 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.

       /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 attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWftpr			   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |External			   |
       |			     |				   |
       | /etc/ftpd/ftpusers	     |				   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Obsolete			   |
       |			     |				   |
       | /etc/ftpusers		     |				   |
       +-----------------------------+-----------------------------+

       login(1), in.ftpd(1M), ftpaccess(4), ftphosts(4), passwd(4), shadow(4), attributes(5), environ(5)

								    1 May 2003							       ftpusers(4)

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