CentOS 5 Administration - 22.6. Additional Resources

22.6. Additional Resources

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For more information about vsftpd, refer to the following resources.

The /usr/share/doc/vsftpd-<version-number>/ directory — Replace <version-number> with the installed version of the vsftpd package. This directory contains a README with basic information about the software. The TUNING file contains basic performance tuning tips and the SECURITY/ directory contains information about the security model employed by vsftpd.
vsftpd related man pages — There are a number of man pages for the daemon and configuration files. The following lists some of the more important man pages.
Server Applications
man vsftpd — Describes available command line options for vsftpd.
Configuration Files
man vsftpd.conf — Contains a detailed list of options available within the configuration file for vsftpd.

man 5 hosts_access — Describes the format and options available within the TCP wrappers configuration files: hosts.allow and hosts.deny.

https://vsftpd.beasts.org/ — The vsftpd project page is a great place to locate the latest documentation and to contact the author of the software.
https://slacksite.com/other/ftp.html — This website provides a concise explanation of the differences between active and passive mode FTP.
https://www.ietf.org/rfc/rfc0959.txt — The original Request for Comments (RFC) of the FTP protocol from the IETF.