Cryptographic filesystem for Linux?

-----BEGIN PGP SIGNED MESSAGE----- Is there an encrypted filesystem for Linux out there? I'm speaking of something like Secure File System(DOS), but for Linux. The kernel in question is 1.1.59, soon to be upgraded to a later version. IDE drive, ex2fs formatted file system. Regards. - --- [This message has been signed by an auto-signing service. A valid signature means only that it has been received at the address corresponding to the signature and forwarded.] -----BEGIN PGP SIGNATURE----- Version: 2.6.2 Comment: Gratis auto-signing service iQBFAwUBLvfY9SoZzwIn1bdtAQHZFAGA3n8SRWBHKm74hkZjm1hFuZ1EFzcXiD78 lRYe4j/RHaxORSM3tHjC/lrt3v9xTF8a =KAWT -----END PGP SIGNATURE-----