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How to add two-factor authentication to Google Apps for your Domain using open source software
Everybody loves GMail. With Google Apps for you Domain, you can use GMail with your own domain, allowing organizations to outsource their email - and the requisite anti-spam filtering to Google. Webmail is very convenient, but for frequent travellers and those who use public wifi, it can be quite dangerous. Logging in from a kiosk or shared computer is a sure way to get your username and password stolen by a keystroke logger. Using a public WiFi system can lead to a man-in-the-middle attack. In this document we will take advantage of two open source projects to add two-factor authentication to Google Apps. The first is Gheimdall, a a TurboGears project for Google Apps SSO service. Gheimdall supports PAM and LDAP authentication natively. It also includes sample code to add new authentication methods, which made it very easy to add two-factor authentication from WiKID. WiKID is a dual-source two-factor authentication solution that uses public key cryptography to strongly authenticate users.
Protect Your Files With TrueCrypt 5 On Fedora 8
This document describes how to set up TrueCrypt 5 on Fedora 8. Taken from the TrueCrypt page: "TrueCrypt is a software system for establishing and maintaining an on-the-fly-encrypted volume (data storage device). On-the-fly encryption means that data are automatically encrypted or decrypted right before they are loaded or saved, without any user intervention. No data stored on an encrypted volume can be read (decrypted) without using the correct password/keyfile(s) or correct encryption keys. Entire file system is encrypted (e.g., file names, folder names, contents of every file, free space, meta data, etc)."
Setting Up An SSH Certificate For Ubuntu From A Mac
This howto should help you with setting up an RSA public and private key setup from a Mac to an Ubuntu box. Of course, this should be possible with other OS's but I have not tested it.
How To Set Up SSH With Public-Key Authentication On Debian Etch
This mini-howto explains how to set up an SSH server on Debian Etch with public-key authorization (and optionally with disabled password logins). SSH is a great tool to control Linux-based computers remotely. It's safe and secure.
How to Secure VSFTP with SSL and Two-factor Authentication
Recently, there was a report from Finjan that administrator credentials for over 9,000 FTP servers were for sale. Then, F-Secure noted an increase in FTP-based attacks. Many companies and organization still use FTP extensively. If you're running an FTP server and you think you're admin credentials might be one of those 9,000, you should consider implementing two-factor authentication for SSH, which will then also give you two-factor authentication for SCP. This document shows how to configure the popular and secure VSFTP to use SSL for encryption and WiKID for two-factor authentication for your FTP users.
Virus Protection With avast! Linux Home Edition On Ubuntu Gutsy Gibbon
This tutorial shows how you can install and use avast! Linux Home Edition on an Ubuntu Gutsy Gibbon desktop. Although there aren't many Linux viruses out there, this can be useful if you often exchange files with Windows users - it can help you to not pass on any Windows viruses (that don't do any harm to Linux systems) to Windows users. avast! Linux Home Edition is free for private and non-commercial use.
Virtual Users And Domains With Postfix, MailScanner, Mailwatch & MySQL On CentOS 5.1
This document describes how to customize Falko's "Virtual Users And Domains" - setup for CentOS 5.1 so that it works with MailScanner and Mailwatch. The resulting system provides a web interface (Mailwatch) where you can manage quarantined emails, train SpamAssassin, edit the white- and blacklist, view configuration files and the detailed MySQL database status ...