GNU SASL is an implementation of the Simple
Authentication and Security Layer framework and
a few common SASL mechanisms. SASL is used by
network servers such as IMAP and SMTP to request
authentication from clients, and in clients to
authenticate against servers. The library
includes support for the SASL framework (with
authentication functions and application data
privacy and integrity functions) and at least
partial support for the CRAM-MD5, EXTERNAL,
GSSAPI, ANONYMOUS, PLAIN, SECURID, DIGEST-MD5,
LOGIN, NTLM, and KERBEROS_V5 mechanisms.
