diff --git a/auth/auth_log.c b/auth/auth_log.c
index fec77077bc9..1509c7b9be6 100644
--- a/auth/auth_log.c
+++ b/auth/auth_log.c
@@ -213,6 +213,7 @@ void log_authentication_event(const struct auth_usersupplied_info *ui,
 void log_successful_authz_event(const struct tsocket_address *remote,
 				const struct tsocket_address *local,
 				const char *service_description,
+				const char *auth_type,
 				struct auth_session_info *session_info)
 {
 	TALLOC_CTX *frame = NULL;
@@ -238,11 +239,12 @@ void log_successful_authz_event(const struct tsocket_address *remote,
 	dom_sid_string_buf(&session_info->security_token->sids[0], sid_buf, sizeof(sid_buf));
 
 	DEBUGC( DBGC_AUTH_AUDIT, AUTHZ_SUCCESS_LEVEL, (
-		"Successful AuthZ: [%s] user [%s]\\[%s] [%s]"
+		"Successful AuthZ: [%s,%s] user [%s]\\[%s] [%s]"
 		" at [%s]"
 		" Remote host [%s]"
 		" local host [%s]\n",
 		service_description,
+		auth_type,
 		log_escape(frame, session_info->info->domain_name),
 		log_escape(frame, session_info->info->account_name),
 		sid_buf,
diff --git a/auth/common_auth.h b/auth/common_auth.h
index 8950a0cdc91..925d3f59ea9 100644
--- a/auth/common_auth.h
+++ b/auth/common_auth.h
@@ -156,5 +156,6 @@ void log_authentication_event(const struct auth_usersupplied_info *ui,
 void log_successful_authz_event(const struct tsocket_address *remote,
 				const struct tsocket_address *local,
 				const char *service_description,
+				const char *auth_type,
 				struct auth_session_info *session_info);
 #endif
diff --git a/auth/gensec/gensec.c b/auth/gensec/gensec.c
index 63cc35e9074..09be9fd531c 100644
--- a/auth/gensec/gensec.c
+++ b/auth/gensec/gensec.c
@@ -193,6 +193,15 @@ _PUBLIC_ NTSTATUS gensec_session_key(struct gensec_security *gensec_security,
 	return gensec_security->ops->session_key(gensec_security, mem_ctx, session_key);
 }
 
+const char *gensec_final_auth_type(struct gensec_security *gensec_security)
+{
+	if (!gensec_security->ops->final_auth_type) {
+		return gensec_security->ops->name;
+	}
+
+	return gensec_security->ops->final_auth_type(gensec_security);
+}
+
 /*
  * Log details of a successful GENSEC authorization to a service.
  *
@@ -210,7 +219,12 @@ static void log_successful_gensec_authz_event(struct gensec_security *gensec_sec
 		= gensec_get_local_address(gensec_security);
 	const char *service_description
 		= gensec_get_target_service_description(gensec_security);
-	log_successful_authz_event(remote, local, service_description, session_info);
+	const char *final_auth_type
+		= gensec_final_auth_type(gensec_security);
+	log_successful_authz_event(remote, local,
+				   service_description,
+				   final_auth_type,
+				   session_info);
 }
 
 
diff --git a/auth/gensec/gensec.h b/auth/gensec/gensec.h
index 7bd893266b9..bc96e697de4 100644
--- a/auth/gensec/gensec.h
+++ b/auth/gensec/gensec.h
@@ -34,6 +34,9 @@
 #define GENSEC_OID_KERBEROS5_OLD "1.2.840.48018.1.2.2"
 #define GENSEC_OID_KERBEROS5_USER2USER "1.2.840.113554.1.2.2.3"
 
+#define GENSEC_FINAL_AUTH_TYPE_KRB5 "krb5"
+#define GENSEC_FINAL_AUTH_TYPE_NTLMSSP "NTLMSSP"
+
 enum gensec_priority {
 	GENSEC_SPNEGO = 90,
 	GENSEC_GSSAPI = 80,
diff --git a/auth/gensec/gensec_internal.h b/auth/gensec/gensec_internal.h
index 55352417e99..26c9817d5df 100644
--- a/auth/gensec/gensec_internal.h
+++ b/auth/gensec/gensec_internal.h
@@ -85,6 +85,7 @@ struct gensec_security_ops {
 	bool (*have_feature)(struct gensec_security *gensec_security,
 				    uint32_t feature);
 	NTTIME (*expire_time)(struct gensec_security *gensec_security);
+	const char *(*final_auth_type)(struct gensec_security *gensec_security);
 	bool enabled;
 	bool kerberos;
 	enum gensec_priority priority;
@@ -126,4 +127,6 @@ struct gensec_critical_sizes {
 NTSTATUS gensec_may_reset_crypto(struct gensec_security *gensec_security,
 				 bool full_reset);
 
+const char *gensec_final_auth_type(struct gensec_security *gensec_security);
+
 #endif /* __GENSEC_H__ */
diff --git a/auth/gensec/spnego.c b/auth/gensec/spnego.c
index f063f7b358b..017181a3622 100644
--- a/auth/gensec/spnego.c
+++ b/auth/gensec/spnego.c
@@ -1651,6 +1651,17 @@ static NTTIME gensec_spnego_expire_time(struct gensec_security *gensec_security)
 	return gensec_expire_time(spnego_state->sub_sec_security);
 }
 
+static const char *gensec_spnego_final_auth_type(struct gensec_security *gensec_security)
+{
+	struct spnego_state *spnego_state = (struct spnego_state *)gensec_security->private_data;
+
+	if (!spnego_state->sub_sec_security) {
+		return "NONE";
+	} else {
+		return gensec_final_auth_type(spnego_state->sub_sec_security);
+	}
+}
+
 static const char *gensec_spnego_oids[] = { 
 	GENSEC_OID_SPNEGO,
 	NULL 
@@ -1678,6 +1689,7 @@ static const struct gensec_security_ops gensec_spnego_security_ops = {
 	.want_feature     = gensec_spnego_want_feature,
 	.have_feature     = gensec_spnego_have_feature,
 	.expire_time      = gensec_spnego_expire_time,
+	.final_auth_type  = gensec_spnego_final_auth_type,
 	.enabled          = true,
 	.priority         = GENSEC_SPNEGO
 };
diff --git a/auth/ntlmssp/ntlmssp.c b/auth/ntlmssp/ntlmssp.c
index 3283c964470..6f7c089467f 100644
--- a/auth/ntlmssp/ntlmssp.c
+++ b/auth/ntlmssp/ntlmssp.c
@@ -207,6 +207,11 @@ static NTSTATUS gensec_ntlmssp_may_reset_crypto(struct gensec_security *gensec_s
 	return NT_STATUS_OK;
 }
 
+static const char *gensec_ntlmssp_final_auth_type(struct gensec_security *gensec_security)
+{
+	return GENSEC_FINAL_AUTH_TYPE_NTLMSSP;
+}
+
 static const char *gensec_ntlmssp_oids[] = {
 	GENSEC_OID_NTLMSSP,
 	NULL
@@ -232,6 +237,7 @@ static const struct gensec_security_ops gensec_ntlmssp_security_ops = {
 	.session_key	= gensec_ntlmssp_session_key,
 	.session_info   = gensec_ntlmssp_session_info,
 	.have_feature   = gensec_ntlmssp_have_feature,
+	.final_auth_type = gensec_ntlmssp_final_auth_type,
 	.enabled        = true,
 	.priority       = GENSEC_NTLMSSP
 };
diff --git a/auth/ntlmssp/ntlmssp_server.c b/auth/ntlmssp/ntlmssp_server.c
index 1bfd4ccdc24..c525a93941f 100644
--- a/auth/ntlmssp/ntlmssp_server.c
+++ b/auth/ntlmssp/ntlmssp_server.c
@@ -721,7 +721,14 @@ static NTSTATUS ntlmssp_server_check_password(struct gensec_security *gensec_sec
 	user_info->local_host = gensec_get_local_address(gensec_security);
 	user_info->service_description
 		= gensec_get_target_service_description(gensec_security);
-	user_info->auth_description = "NTLMSSP";
+
+	/*
+	 * This will just be the string "NTLMSSP" from
+	 * gensec_ntlmssp_final_auth_type, but ensures it stays in sync
+	 * with the same use in the authorization logging triggered by
+	 * gensec_session_info() later
+	 */
+	user_info->auth_description = gensec_final_auth_type(gensec_security);
 
 	user_info->password_state = AUTH_PASSWORD_RESPONSE;
 	user_info->password.response.lanman = ntlmssp_state->lm_resp;
diff --git a/source3/librpc/crypto/gse.c b/source3/librpc/crypto/gse.c
index 273fd02c197..142627c0011 100644
--- a/source3/librpc/crypto/gse.c
+++ b/source3/librpc/crypto/gse.c
@@ -1275,6 +1275,21 @@ static size_t gensec_gse_sig_size(struct gensec_security *gensec_security,
 	return gse_ctx->sig_size;
 }
 
+static const char *gensec_gse_final_auth_type(struct gensec_security *gensec_security)
+{
+	struct gse_context *gse_ctx =
+		talloc_get_type_abort(gensec_security->private_data,
+		struct gse_context);
+
+	/* Only return the string for GSSAPI/Krb5 */
+	if (smb_gss_oid_equal(&gse_ctx->gss_mech,
+			      gss_mech_krb5)) {
+		return GENSEC_FINAL_AUTH_TYPE_KRB5;
+	} else {
+		return "gensec_gse: UNKNOWN MECH";
+	}
+}
+
 static const char *gensec_gse_krb5_oids[] = {
 	GENSEC_OID_KERBEROS5_OLD,
 	GENSEC_OID_KERBEROS5,
@@ -1302,6 +1317,7 @@ const struct gensec_security_ops gensec_gse_krb5_security_ops = {
 	.unwrap         = gensec_gse_unwrap,
 	.have_feature   = gensec_gse_have_feature,
 	.expire_time    = gensec_gse_expire_time,
+	.final_auth_type  = gensec_gse_final_auth_type,
 	.enabled        = true,
 	.kerberos       = true,
 	.priority       = GENSEC_GSSAPI
diff --git a/source4/auth/gensec/gensec_gssapi.c b/source4/auth/gensec/gensec_gssapi.c
index cfe2ea88aad..e2755b3d228 100644
--- a/source4/auth/gensec/gensec_gssapi.c
+++ b/source4/auth/gensec/gensec_gssapi.c
@@ -1539,6 +1539,19 @@ static size_t gensec_gssapi_sig_size(struct gensec_security *gensec_security, si
 	return gensec_gssapi_state->sig_size;
 }
 
+static const char *gensec_gssapi_final_auth_type(struct gensec_security *gensec_security)
+{
+	struct gensec_gssapi_state *gensec_gssapi_state
+		= talloc_get_type(gensec_security->private_data, struct gensec_gssapi_state);
+	/* Only return the string for GSSAPI/Krb5 */
+	if (smb_gss_oid_equal(gensec_gssapi_state->gss_oid,
+			      gss_mech_krb5)) {
+		return GENSEC_FINAL_AUTH_TYPE_KRB5;
+	} else {
+		return "gensec_gssapi: UNKNOWN MECH";
+	}
+}
+
 static const char *gensec_gssapi_krb5_oids[] = { 
 	GENSEC_OID_KERBEROS5_OLD,
 	GENSEC_OID_KERBEROS5,
@@ -1572,6 +1585,7 @@ static const struct gensec_security_ops gensec_gssapi_spnego_security_ops = {
 	.unwrap         = gensec_gssapi_unwrap,
 	.have_feature   = gensec_gssapi_have_feature,
 	.expire_time    = gensec_gssapi_expire_time,
+	.final_auth_type = gensec_gssapi_final_auth_type,
 	.enabled        = false,
 	.kerberos       = true,
 	.priority       = GENSEC_GSSAPI
@@ -1599,6 +1613,7 @@ static const struct gensec_security_ops gensec_gssapi_krb5_security_ops = {
 	.unwrap         = gensec_gssapi_unwrap,
 	.have_feature   = gensec_gssapi_have_feature,
 	.expire_time    = gensec_gssapi_expire_time,
+	.final_auth_type = gensec_gssapi_final_auth_type,
 	.enabled        = true,
 	.kerberos       = true,
 	.priority       = GENSEC_GSSAPI
@@ -1619,6 +1634,7 @@ static const struct gensec_security_ops gensec_gssapi_sasl_krb5_security_ops = {
 	.unwrap           = gensec_gssapi_unwrap,
 	.have_feature     = gensec_gssapi_have_feature,
 	.expire_time      = gensec_gssapi_expire_time,
+	.final_auth_type = gensec_gssapi_final_auth_type,
 	.enabled          = true,
 	.kerberos         = true,
 	.priority         = GENSEC_GSSAPI
diff --git a/source4/auth/gensec/gensec_krb5.c b/source4/auth/gensec/gensec_krb5.c
index b54a41bfd5d..49469298964 100644
--- a/source4/auth/gensec/gensec_krb5.c
+++ b/source4/auth/gensec/gensec_krb5.c
@@ -1038,6 +1038,11 @@ static bool gensec_krb5_have_feature(struct gensec_security *gensec_security,
 	return false;
 }
 
+static const char *gensec_krb5_final_auth_type(struct gensec_security *gensec_security)
+{
+	return GENSEC_FINAL_AUTH_TYPE_KRB5;
+}
+
 static const char *gensec_krb5_oids[] = { 
 	GENSEC_OID_KERBEROS5,
 	GENSEC_OID_KERBEROS5_OLD,
@@ -1055,9 +1060,10 @@ static const struct gensec_security_ops gensec_fake_gssapi_krb5_security_ops = {
 	.session_key	= gensec_krb5_session_key,
 	.session_info	= gensec_krb5_session_info,
 	.have_feature   = gensec_krb5_have_feature,
+	.final_auth_type = gensec_krb5_final_auth_type,
 	.enabled        = false,
 	.kerberos       = true,
-	.priority       = GENSEC_KRB5
+	.priority       = GENSEC_KRB5,
 };
 
 static const struct gensec_security_ops gensec_krb5_security_ops = {
@@ -1070,6 +1076,7 @@ static const struct gensec_security_ops gensec_krb5_security_ops = {
 	.have_feature   = gensec_krb5_have_feature,
 	.wrap           = gensec_krb5_wrap,
 	.unwrap         = gensec_krb5_unwrap,
+	.final_auth_type = gensec_krb5_final_auth_type,
 	.enabled        = true,
 	.kerberos       = true,
 	.priority       = GENSEC_KRB5