#define A_PASSWORD 0 /* password or inline authentication */
#define A_KERBEROS_V4 1 /* preauthenticate w/ Kerberos V4 */
#define A_KERBEROS_V5 2 /* preauthenticate w/ Kerberos V5 */
+#define A_SSH 3 /* preauthentication at session level */
/*
* Definitions for buffer sizes. We get little help on setting maxima