Federal Information Processing Standard (FIPS)

http://en.wikipedia.org/wiki/Federal_Information_Processing_Standard

Got to love Wikipedia.

http://www.itl.nist.gov/fipspubs/

The FIPS home page.

http://www.rycombe.com/short140.htm

A quick overview.

http://tldp.org/HOWTO/LDAP-HOWTO/

In Linux