Comment CryptoAPI (Score 5, Informative) 297
Do a search on google for CryptoAPI. That's the new encrypted filesystem interface for linux. The pathes for 2.4.3 are old. I have an encrypted file system working with 2.4.16 patched with GRSecurity. You no longer need to patch the kernel with CryptoAPI, it just creates kernel modules that you install. It's pretty easy to do.