| .\" Copyright (c) 2000 Christoph J. Thompson <obituary@linuxbe.org> |
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| .TH FTPUSERS 5 2000-08-27 "Linux" "Linux Programmer's Manual" |
| .SH NAME |
| ftpusers \- list of users that may not log in via the FTP daemon |
| .SH DESCRIPTION |
| The text file |
| .B ftpusers |
| contains a list of users that may not log in using the |
| File Transfer Protocol (FTP) server daemon. |
| This file is used not merely for |
| system administration purposes but also for improving security within a TCP/IP |
| networked environment. |
| .PP |
| The |
| .B ftpusers |
| file will typically contain a list of the users that |
| either have no business using ftp or have too many privileges to be allowed |
| to log in through the FTP server daemon. |
| Such users usually include root, daemon, bin, uucp, and news. |
| .PP |
| If your FTP server daemon doesn't use |
| .BR ftpusers , |
| then it is suggested that you read its documentation to find out how to |
| block access for certain users. |
| Washington University FTP server Daemon |
| (wuftpd) and Professional FTP Daemon (proftpd) are known to make use of |
| .BR ftpusers . |
| .SS Format |
| The format of |
| .B ftpusers |
| is very simple. |
| There is one account name (or username) per line. |
| Lines starting with a # are ignored. |
| .SH FILES |
| .I /etc/ftpusers |
| .SH SEE ALSO |
| .BR passwd (5), |
| .BR proftpd (8), |
| .BR wuftpd (8) |