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How To Install mod_security/mod_security2 On SuSE Linux Enterprise Server 10 (SLES10)
The Apache module mod_security is a very powerful security module. Combined with predefined rules, you can close many security wholes on your server, opened by bad written php or perl apps. Unfortunately mod_security is not part of the SLES10 distribution. To install mod_security to have to install some 3rd party modules. This guide helps you to install mod_security on SLES10 in a reproducable way (RPM). It also helps you to remove the module, by building RPM packages you can easily uninstall.
Setting Up An Iptables Firewall On Ubuntu With Firehol
Everybody, who tried to configure an iptables firewall knows, that it can be quite a PITA. firehol is a tool that helps us to configure iptables according to our needs. In this How-To, I will discribe how to set up an iptables firewal using firehol that only allows SSH and ICMP (the protocol responsible for ping and traceroute). Also, only incoming connections are filtered, and outgoing connections are allowed.
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.
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