User Management

Vsftpd (Very Secure FTP Daemon) is an FTP server for UNIX-like systems, including CentOS / RHEL / Fedora and other Linux distributions. It supports IPv6, SSL, locking users to their home directories and many other advanced features.

In this guide you will learn:

  1. Setup vsftpd to provide FTP service.
  2. Configure vsftpd.
  3. Configure Firewalls to protect the FTP server.
  4. Configure vsftpd with SSL/TLS.
  5. Setup vsftpd as download only anonymous internet server.
  6. Setup vsftpd with virtual users and more.

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There is a way to protect different directories with different username/password under Lighttpd server using conditionals directives.

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Security is an important aspect of the IBM AIX operating system. Follow along with this quick reference guide on AIX user security commands to learn more.

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rssh is a restricted shell for providing limited access to a host via ssh. It also allows system wide configuration and per user configuration. From the man page: The user configuration directive allows for the configuration of options on a per-user basis. THIS KEYWORD OVERRIDES ALL OTHER KEYWORDS FOR THE SPECIFIED USER. That is, if […]

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I was writing and testing few python scripts (yes I’m moving lot of stuff from shell / perl to python these days) and accidentally I renamed my own user account from vivek to test. However, I did not noticed change until I rebooted my box. Now I cannot run sudo (or become a root user) […]

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Under Linux password related utilities and config file(s) comes from shadow password suite. The /etc/login.defs file defines the site-specific configuration for this suite. This file is a readable text file, each line of the file describing one configuration parameter. The lines consist of a configuration name and value, separated by whitespace. You need to set […]

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