1RFC info from the gsasl README (with newer RFCs added). 2 3Implemented: 4 ANONYMOUS (RFC 2245, RFC 4505) 5 CRAM-MD5 (RFC 2195) 6 DIGEST-MD5 (RFC 2831) 7 EXTERNAL (RFC 2222, RFC 4422) 8 GSSAPI (RFC 2222, RFC 4752, requires GSS, Heimdal or MIT Kerberos) 9 LOGIN (non-standard) 10 PLAIN (RFC 2595, RFC 4616) 11 12Not implemented: 13 GS2-KRB5 (RFC 5801, no CB, requires GSS, Heimdal, or MIT Kerberos) 14 KERBEROS_V5 (experimental, requires Shishi) 15 NTLM (non-standard, client only, requires Libntlm) 16 SCRAM-SHA-1 and SCRAM-SHA-1-PLUS (RFC 5802) 17 SECURID (RFC 2808) 18