Well, I have written so far two tutorials with LUKS/dm_crypt involved. First one was how to enable encryption on Feisty Fawn (wasn't included back then by default) and the other one was how to reboot/unlock through a remote connection.

Guidelines to have encrypted Debian system on a USB flash key, to take with you during your travels. The solution uses LUKS to encrypt the root filesystem.

Some people have a need for storing data securely. Sometimes this means not only redundant disks (and a good backup strategy) but also encryption. Fortunately, the Linux kernel has all the features to use multiple RAID devices, pool them to a Logical Volume, and encrypt every block of the filesystem. Just don't forget your passphrase!

Laptops are easily lost or stolen and in order to protect your emails, web passwords, encryption keys, etc., you should really think about encrypting (at least) your home directory.

How to unlock computer if I forgot my Windows password? This article tells you what to do if you forgot your Windows password. A detailed guide for you to recover Windows password easily and safely. No need to lose your computer data.

If Ubuntu wants to be taken seriously in the workplace, it needs a secure remote desktop. Many people have a need to connect to their work computer from home using remote desktop technology. Currently, the Ubuntu Remote Desktop is a front-end for VNC, which allows you to remotely manage your desktop.

"Even though the Debian installer can set up encrypted partitions, it is optimised for systems with a single data partition, unless you want to enter multiple passphrases when the system boots. The installer configures a LUKS volume using cryptsetup, but it provides no mechanism for the use of key files, only interactive passphrases.

The Secure Shell (SSH) and Secure Copy (SCP) make remotely performing system administration and copying files across secure links a painless operation. SSH and SCP use the same SSH protocol to protect network communications, but they rely on users knowing if they want a shell or to copy a file beforehand.

dm-crypt is a device-mapper target that provides transparent encryption of block devices using the new Linux 2.6 cryptoapi.