Extend the 'netlogon' CLDAP and NBT implementation.

This now handles checking if the user exists, including validating the
ACB mask on the user.

This would be a nasty security hole, if Kerberos did not already
expose this information anonymously...

Andrew Bartlett
(This used to be commit 441b286c00f9a7743cdefeb243545bdbd2c94c5e)

4 files changed, 329 insertions, 31 deletions

diff --git a/source4/cldap_server/netlogon.c b/source4/cldap_server/netlogon.c
index b2a034d5a4..bca965781a 100644
--- a/source4/cldap_server/netlogon.c
+++ b/source4/cldap_server/netlogon.c
@@ -46,6 +46,7 @@ NTSTATUS fill_netlogon_samlogon_response(struct ldb_context *sam_ctx,
 					 struct dom_sid *domain_sid,
 					 const char *domain_guid,
 					 const char *user,
+					 uint32_t acct_control,
 					 const char *src_address,
 					 uint32_t version,
 					 struct loadparm_context *lp_ctx,
@@ -53,7 +54,8 @@ NTSTATUS fill_netlogon_samlogon_response(struct ldb_context *sam_ctx,
 {
 	const char *ref_attrs[] = {"nETBIOSName", "dnsRoot", "ncName", NULL};
 	const char *dom_attrs[] = {"objectGUID", NULL};
-	struct ldb_result *ref_res = NULL, *dom_res = NULL;
+	const char *none_attrs[] = {NULL};
+	struct ldb_result *ref_res = NULL, *dom_res = NULL, *user_res = NULL;
 	int ret;
 	const char **services = lp_server_services(lp_ctx);
 	uint32_t server_type;
@@ -68,6 +70,7 @@ NTSTATUS fill_netlogon_samlogon_response(struct ldb_context *sam_ctx,
 	const char *pdc_ip;
 	struct ldb_dn *partitions_basedn;
 	struct interface *ifaces;
+	bool user_known;
 
 	partitions_basedn = samdb_partitions_dn(sam_ctx, mem_ctx);
 
@@ -201,6 +204,7 @@ NTSTATUS fill_netlogon_samlogon_response(struct ldb_context *sam_ctx,
 		}
 	}
 
+
 	if ((ref_res == NULL || ref_res->count == 0)) {
 		DEBUG(2,("Unable to find domain reference with name %s or GUID {%s}\n", domain, domain_guid));
 		return NT_STATUS_NO_SUCH_DOMAIN;
@@ -211,6 +215,44 @@ NTSTATUS fill_netlogon_samlogon_response(struct ldb_context *sam_ctx,
 		return NT_STATUS_NO_SUCH_DOMAIN;
 	}
 
+	/* work around different inputs for not-specified users */
+	if (!user) {
+		user = "";
+	}
+
+	/* Enquire about any valid username with just a CLDAP packet -
+	 * if kerberos didn't also do this, the security folks would
+	 * scream... */
+	if (user[0]) {							\
+		/* Only allow some bits to be enquired:  [MS-ATDS] 7.3.3.2 */
+		if (acct_control == (uint32_t)-1) {
+			acct_control = 0;
+		}
+		acct_control = acct_control & (ACB_TEMPDUP | ACB_NORMAL | ACB_DOMTRUST | ACB_WSTRUST | ACB_SVRTRUST);
+
+		/* We must exclude disabled accounts, but otherwise do the bitwise match the client asked for */
+		ret = ldb_search_exp_fmt(sam_ctx, mem_ctx, &user_res,
+					 dom_res->msgs[0]->dn, LDB_SCOPE_SUBTREE, 
+					 none_attrs, 
+					 "(&(objectClass=user)(samAccountName=%s)"
+					 "(!(userAccountControl:" LDB_OID_COMPARATOR_AND ":=%u))"
+					 "(userAccountControl:" LDB_OID_COMPARATOR_OR ":=%u))", 
+					 user, UF_ACCOUNTDISABLE, samdb_acb2uf(acct_control));
+		if (ret != LDB_SUCCESS) {
+			DEBUG(2,("Unable to find referece to user '%s' with ACB 0x%8x under %s: %s\n",
+				 user, acct_control, ldb_dn_get_linearized(dom_res->msgs[0]->dn),
+				 ldb_errstring(sam_ctx)));
+			return NT_STATUS_NO_SUCH_USER;
+		} else if (user_res->count == 1) {
+			user_known = true;
+		} else {
+			user_known = false;
+		}
+
+	} else {
+		user_known = true;
+	}
+		
 	server_type      = 
 		NBT_SERVER_DS | NBT_SERVER_TIMESERV |
 		NBT_SERVER_CLOSEST | NBT_SERVER_WRITABLE | 
@@ -250,13 +292,13 @@ NTSTATUS fill_netlogon_samlogon_response(struct ldb_context *sam_ctx,
 
 	ZERO_STRUCTP(netlogon);
 
-	if (version & NETLOGON_NT_VERSION_5EX) {
+	/* check if either of these bits is present */
+	if (version & (NETLOGON_NT_VERSION_5EX|NETLOGON_NT_VERSION_5EX_WITH_IP)) {
 		uint32_t extra_flags = 0;
 		netlogon->ntver = NETLOGON_NT_VERSION_5EX;
 
 		/* could check if the user exists */
-		if (!user) {
-			user = "";
+		if (user_known) {
 			netlogon->nt5_ex.command      = LOGON_SAM_LOGON_RESPONSE_EX;
 		} else {
 			netlogon->nt5_ex.command      = LOGON_SAM_LOGON_USER_UNKNOWN_EX;
@@ -277,7 +319,7 @@ NTSTATUS fill_netlogon_samlogon_response(struct ldb_context *sam_ctx,
 			extra_flags = NETLOGON_NT_VERSION_5EX_WITH_IP;
 			netlogon->nt5_ex.sockaddr.sa_family    = 2;
 			netlogon->nt5_ex.sockaddr.pdc_ip       = pdc_ip;
-			netlogon->nt5_ex.sockaddr.remaining = data_blob(NULL, 4);
+			netlogon->nt5_ex.sockaddr.remaining = data_blob_talloc(mem_ctx, NULL, 4);
 		}
 		netlogon->nt5_ex.nt_version   = NETLOGON_NT_VERSION_1|NETLOGON_NT_VERSION_5EX|extra_flags;
 		netlogon->nt5_ex.lmnt_token   = 0xFFFF;
@@ -287,8 +329,7 @@ NTSTATUS fill_netlogon_samlogon_response(struct ldb_context *sam_ctx,
 		netlogon->ntver = NETLOGON_NT_VERSION_5;
 
 		/* could check if the user exists */
-		if (!user) {
-			user = "";
+		if (user_known) {
 			netlogon->nt5.command      = LOGON_SAM_LOGON_RESPONSE;
 		} else {
 			netlogon->nt5.command      = LOGON_SAM_LOGON_USER_UNKNOWN;
@@ -309,8 +350,7 @@ NTSTATUS fill_netlogon_samlogon_response(struct ldb_context *sam_ctx,
 	} else /* (version & NETLOGON_NT_VERSION_1) and all other cases */ {
 		netlogon->ntver = NETLOGON_NT_VERSION_1;
 		/* could check if the user exists */
-		if (!user) {
-			user = "";
+		if (user_known) {
 			netlogon->nt4.command      = LOGON_SAM_LOGON_RESPONSE;
 		} else {
 			netlogon->nt4.command      = LOGON_SAM_LOGON_USER_UNKNOWN;
@@ -406,7 +446,7 @@ void cldapd_netlogon_request(struct cldap_socket *cldap,
 		 domain, host, user, version, domain_guid));
 
 	status = fill_netlogon_samlogon_response(cldapd->samctx, tmp_ctx, domain, NULL, NULL, domain_guid,
-						 user, src->addr, 
+						 user, acct_control, src->addr, 
 						 version, cldapd->task->lp_ctx, &netlogon);
 	if (!NT_STATUS_IS_OK(status)) {
 		goto failed;
diff --git a/source4/nbt_server/dgram/netlogon.c b/source4/nbt_server/dgram/netlogon.c
index 664cd56636..5e263a5854 100644
--- a/source4/nbt_server/dgram/netlogon.c
+++ b/source4/nbt_server/dgram/netlogon.c
@@ -139,7 +139,7 @@ static void nbtd_netlogon_samlogon(struct dgram_mailslot_handler *dgmslot,
 	}
 
 	status = fill_netlogon_samlogon_response(samctx, packet, NULL, name->name, sid, NULL, 
-						 netlogon->req.logon.user_name, src->addr, 
+						 netlogon->req.logon.user_name, netlogon->req.logon.acct_control, src->addr, 
 						 netlogon->req.logon.nt_version, iface->nbtsrv->task->lp_ctx, &netlogon_response.samlogon);
 	if (!NT_STATUS_IS_OK(status)) {
 		DEBUG(2,("NBT netlogon query failed domain=%s sid=%s version=%d - %s\n",
diff --git a/source4/torture/ldap/cldap.c b/source4/torture/ldap/cldap.c
index a77920d4e6..5d4acd581b 100644
--- a/source4/torture/ldap/cldap.c
+++ b/source4/torture/ldap/cldap.c
@@ -144,18 +144,38 @@ static bool test_cldap_netlogon(struct torture_context *tctx, const char *dest)
 	CHECK_STATUS(status, NT_STATUS_NOT_FOUND);
 
 	printf("Trying with a AAC\n");
-	search.in.acct_control = 0x180;
+	search.in.acct_control = ACB_WSTRUST|ACB_SVRTRUST;
 	search.in.realm = n1.nt5_ex.dns_domain;
 	status = cldap_netlogon(cldap, tctx, &search);
 	CHECK_STATUS(status, NT_STATUS_OK);
 	CHECK_VAL(search.out.netlogon.nt5_ex.command, LOGON_SAM_LOGON_RESPONSE_EX);
 	CHECK_STRING(search.out.netlogon.nt5_ex.user_name, "");
 
+	printf("Trying with a zero AAC\n");
+	search.in.acct_control = 0x0;
+	search.in.realm = n1.nt5_ex.dns_domain;
+	status = cldap_netlogon(cldap, tctx, &search);
+	CHECK_STATUS(status, NT_STATUS_OK);
+	CHECK_VAL(search.out.netlogon.nt5_ex.command, LOGON_SAM_LOGON_RESPONSE_EX);
+	CHECK_STRING(search.out.netlogon.nt5_ex.user_name, "");
+
+	printf("Trying with a zero AAC and user=Administrator\n");
+	search.in.acct_control = 0x0;
+	search.in.user = "Administrator";
+	search.in.realm = n1.nt5_ex.dns_domain;
+	status = cldap_netlogon(cldap, tctx, &search);
+	CHECK_STATUS(status, NT_STATUS_OK);
+	CHECK_VAL(search.out.netlogon.nt5_ex.command, LOGON_SAM_LOGON_USER_UNKNOWN_EX);
+	CHECK_STRING(search.out.netlogon.nt5_ex.user_name, "Administrator");
+
 	printf("Trying with a bad AAC\n");
+	search.in.user = NULL;
 	search.in.acct_control = 0xFF00FF00;
 	search.in.realm = n1.nt5_ex.dns_domain;
 	status = cldap_netlogon(cldap, tctx, &search);
 	CHECK_STATUS(status, NT_STATUS_OK);
+	CHECK_VAL(search.out.netlogon.nt5_ex.command, LOGON_SAM_LOGON_RESPONSE_EX);
+	CHECK_STRING(search.out.netlogon.nt5_ex.user_name, "");
 
 	printf("Trying with a user only\n");
 	search = empty_search;
diff --git a/source4/torture/nbt/dgram.c b/source4/torture/nbt/dgram.c
index 2bc3d3d75e..66a3d142db 100644
--- a/source4/torture/nbt/dgram.c
+++ b/source4/torture/nbt/dgram.c
@@ -42,19 +42,24 @@ static void netlogon_handler(struct dgram_mailslot_handler *dgmslot,
 			     struct socket_address *src)
 {
 	NTSTATUS status;
-	struct nbt_netlogon_response netlogon;
-	int *replies = (int *)dgmslot->private;
+	struct nbt_netlogon_response *netlogon = dgmslot->private;
 
+	dgmslot->private = netlogon = talloc(dgmslot, struct nbt_netlogon_response);
+
+	if (!dgmslot->private) {
+		return;
+	}
+       
 	printf("netlogon reply from %s:%d\n", src->addr, src->port);
 
-	status = dgram_mailslot_netlogon_parse_response(dgmslot, dgmslot, packet, &netlogon);
+	/* Fills in the netlogon pointer */
+	status = dgram_mailslot_netlogon_parse_response(dgmslot, netlogon, packet, netlogon);
 	if (!NT_STATUS_IS_OK(status)) {
 		printf("Failed to parse netlogon packet from %s:%d\n",
 		       src->addr, src->port);
 		return;
 	}
-	
-	(*replies)++;
+
 }
 
 
@@ -67,10 +72,10 @@ static bool nbt_test_netlogon(struct torture_context *tctx)
 	struct socket_address *dest;
 	const char *myaddress;
 	struct nbt_netlogon_packet logon;
+	struct nbt_netlogon_response *response;
 	struct nbt_name myname;
 	NTSTATUS status;
 	struct timeval tv = timeval_current();
-	int replies = 0;
 
 	struct socket_address *socket_address;
 
@@ -78,7 +83,7 @@ static bool nbt_test_netlogon(struct torture_context *tctx)
 	struct nbt_name name;
 
 	struct interface *ifaces;
-	
+
 	name.name = lp_workgroup(tctx->lp_ctx);
 	name.type = NBT_NAME_LOGON;
 	name.scope = NULL;
@@ -112,7 +117,7 @@ static bool nbt_test_netlogon(struct torture_context *tctx)
 
 	/* setup a temporary mailslot listener for replies */
 	dgmslot = dgram_mailslot_temp(dgmsock, NBT_MAILSLOT_GETDC,
-				      netlogon_handler, &replies);
+				      netlogon_handler, NULL);
 
 	ZERO_STRUCT(logon);
 	logon.command = LOGON_PRIMARY_QUERY;
@@ -134,10 +139,17 @@ static bool nbt_test_netlogon(struct torture_context *tctx)
 					      &myname, &logon);
 	torture_assert_ntstatus_ok(tctx, status, "Failed to send netlogon request");
 
-	while (timeval_elapsed(&tv) < 5 && replies == 0) {
+	while (timeval_elapsed(&tv) < 5 && !dgmslot->private) {
 		event_loop_once(dgmsock->event_ctx);
 	}
 
+	response = talloc_get_type(dgmslot->private, struct nbt_netlogon_response);
+
+	torture_assert(tctx, response != NULL, "Failed to receive a netlogon reply packet");
+
+	torture_assert(tctx, response->response_type == NETLOGON_GET_PDC, "Got incorrect type of netlogon response");
+	torture_assert(tctx, response->get_pdc.command == NETLOGON_RESPONSE_FROM_PDC, "Got incorrect netlogon response command");
+
 	return true;
 }
 
@@ -151,10 +163,10 @@ static bool nbt_test_netlogon2(struct torture_context *tctx)
 	struct socket_address *dest;
 	const char *myaddress;
 	struct nbt_netlogon_packet logon;
+	struct nbt_netlogon_response *response;
 	struct nbt_name myname;
 	NTSTATUS status;
 	struct timeval tv = timeval_current();
-	int replies = 0;
 
 	struct socket_address *socket_address;
 
@@ -198,7 +210,7 @@ static bool nbt_test_netlogon2(struct torture_context *tctx)
 
 	/* setup a temporary mailslot listener for replies */
 	dgmslot = dgram_mailslot_temp(dgmsock, NBT_MAILSLOT_GETDC,
-				      netlogon_handler, &replies);
+				      netlogon_handler, NULL);
 	
 
 	ZERO_STRUCT(logon);
@@ -207,7 +219,7 @@ static bool nbt_test_netlogon2(struct torture_context *tctx)
 	logon.req.logon.computer_name = TEST_NAME;
 	logon.req.logon.user_name     = "";
 	logon.req.logon.mailslot_name = dgmslot->mailslot_name;
-	logon.req.logon.nt_version    = 11;
+	logon.req.logon.nt_version    = NETLOGON_NT_VERSION_5EX_WITH_IP|NETLOGON_NT_VERSION_5|NETLOGON_NT_VERSION_1;
 	logon.req.logon.lmnt_token    = 0xFFFF;
 	logon.req.logon.lm20_token    = 0xFFFF;
 
@@ -222,10 +234,23 @@ static bool nbt_test_netlogon2(struct torture_context *tctx)
 					      &myname, &logon);
 	torture_assert_ntstatus_ok(tctx, status, "Failed to send netlogon request");
 
-	while (timeval_elapsed(&tv) < 5 && replies == 0) {
+	while (timeval_elapsed(&tv) < 5 && dgmslot->private == NULL) {
 		event_loop_once(dgmsock->event_ctx);
 	}
 
+	response = talloc_get_type(dgmslot->private, struct nbt_netlogon_response);
+
+	torture_assert(tctx, response != NULL, "Failed to receive a netlogon reply packet");
+
+	torture_assert_int_equal(tctx, response->response_type, NETLOGON_SAMLOGON, "Got incorrect type of netlogon response");
+	map_netlogon_samlogon_response(&response->samlogon);
+
+	torture_assert_int_equal(tctx, response->samlogon.nt5_ex.command, LOGON_SAM_LOGON_RESPONSE_EX, "Got incorrect netlogon response command");
+
+	/* setup (another) temporary mailslot listener for replies */
+	dgmslot = dgram_mailslot_temp(dgmsock, NBT_MAILSLOT_GETDC,
+				      netlogon_handler, NULL);
+	
 	ZERO_STRUCT(logon);
 	logon.command = LOGON_SAM_LOGON_REQUEST;
 	logon.req.logon.request_count = 0;
@@ -247,15 +272,109 @@ static bool nbt_test_netlogon2(struct torture_context *tctx)
 					      &myname, &logon);
 	torture_assert_ntstatus_ok(tctx, status, "Failed to send netlogon request");
 
-	while (timeval_elapsed(&tv) < 5 && replies == 0) {
+	while (timeval_elapsed(&tv) < 5 && dgmslot->private == NULL) {
 		event_loop_once(dgmsock->event_ctx);
 	}
 
+	response = talloc_get_type(dgmslot->private, struct nbt_netlogon_response);
+
+	torture_assert(tctx, response != NULL, "Failed to receive a netlogon reply packet");
+
+	torture_assert_int_equal(tctx, response->response_type, NETLOGON_SAMLOGON, "Got incorrect type of netlogon response");
+	map_netlogon_samlogon_response(&response->samlogon);
+
+	torture_assert_int_equal(tctx, response->samlogon.nt5_ex.command, LOGON_SAM_LOGON_USER_UNKNOWN, "Got incorrect netlogon response command");
+
+	torture_assert_str_equal(tctx, response->samlogon.nt5_ex.user_name, TEST_NAME"$", "Got incorrect user in netlogon response");
+
 	join_ctx = torture_join_domain(tctx, TEST_NAME, 
 				       ACB_WSTRUST, &machine_credentials);
 
 	dom_sid = torture_join_sid(join_ctx);
 
+	/* setup (another) temporary mailslot listener for replies */
+	dgmslot = dgram_mailslot_temp(dgmsock, NBT_MAILSLOT_GETDC,
+				      netlogon_handler, NULL);
+	
+	ZERO_STRUCT(logon);
+	logon.command = LOGON_SAM_LOGON_REQUEST;
+	logon.req.logon.request_count = 0;
+	logon.req.logon.computer_name = TEST_NAME;
+	logon.req.logon.user_name     = TEST_NAME"$";
+	logon.req.logon.mailslot_name = dgmslot->mailslot_name;
+	logon.req.logon.sid           = *dom_sid;
+	logon.req.logon.nt_version    = 1;
+	logon.req.logon.lmnt_token    = 0xFFFF;
+	logon.req.logon.lm20_token    = 0xFFFF;
+
+	make_nbt_name_client(&myname, TEST_NAME);
+
+	dest = socket_address_from_strings(dgmsock, dgmsock->sock->backend_name, 
+					   address, lp_dgram_port(tctx->lp_ctx));
+
+	torture_assert(tctx, dest != NULL, "Error getting address");
+	status = dgram_mailslot_netlogon_send(dgmsock, &name, dest,
+					      NBT_MAILSLOT_NETLOGON, 
+					      &myname, &logon);
+	torture_assert_ntstatus_ok(tctx, status, "Failed to send netlogon request");
+
+
+	while (timeval_elapsed(&tv) < 5 && dgmslot->private == NULL) {
+		event_loop_once(dgmsock->event_ctx);
+	}
+
+	response = talloc_get_type(dgmslot->private, struct nbt_netlogon_response);
+
+	torture_assert(tctx, response != NULL, "Failed to receive a netlogon reply packet");
+
+	torture_assert_int_equal(tctx, response->response_type, NETLOGON_SAMLOGON, "Got incorrect type of netlogon response");
+	map_netlogon_samlogon_response(&response->samlogon);
+
+	torture_assert_int_equal(tctx, response->samlogon.nt5_ex.command, LOGON_SAM_LOGON_USER_UNKNOWN, "Got incorrect netlogon response command");
+
+	/* setup (another) temporary mailslot listener for replies */
+	dgmslot = dgram_mailslot_temp(dgmsock, NBT_MAILSLOT_GETDC,
+				      netlogon_handler, NULL);
+	
+	ZERO_STRUCT(logon);
+	logon.command = LOGON_SAM_LOGON_REQUEST;
+	logon.req.logon.request_count = 0;
+	logon.req.logon.computer_name = TEST_NAME;
+	logon.req.logon.user_name     = TEST_NAME"$";
+	logon.req.logon.mailslot_name = dgmslot->mailslot_name;
+	logon.req.logon.sid           = *dom_sid;
+	logon.req.logon.acct_control  = ACB_WSTRUST;
+	logon.req.logon.nt_version    = 1;
+	logon.req.logon.lmnt_token    = 0xFFFF;
+	logon.req.logon.lm20_token    = 0xFFFF;
+
+	make_nbt_name_client(&myname, TEST_NAME);
+
+	dest = socket_address_from_strings(dgmsock, dgmsock->sock->backend_name, 
+					   address, lp_dgram_port(tctx->lp_ctx));
+
+	torture_assert(tctx, dest != NULL, "Error getting address");
+	status = dgram_mailslot_netlogon_send(dgmsock, &name, dest,
+					      NBT_MAILSLOT_NETLOGON, 
+					      &myname, &logon);
+	torture_assert_ntstatus_ok(tctx, status, "Failed to send netlogon request");
+
+
+	while (timeval_elapsed(&tv) < 5 && dgmslot->private == NULL) {
+		event_loop_once(dgmsock->event_ctx);
+	}
+
+	response = talloc_get_type(dgmslot->private, struct nbt_netlogon_response);
+
+	torture_assert(tctx, response != NULL, "Failed to receive a netlogon reply packet");
+
+	torture_assert_int_equal(tctx, response->response_type, NETLOGON_SAMLOGON, "Got incorrect type of netlogon response");
+	map_netlogon_samlogon_response(&response->samlogon);
+
+	torture_assert_int_equal(tctx, response->samlogon.nt5_ex.command, LOGON_SAM_LOGON_RESPONSE, "Got incorrect netlogon response command");
+
+	dgmslot->private = NULL;
+
 	ZERO_STRUCT(logon);
 	logon.command = LOGON_SAM_LOGON_REQUEST;
 	logon.req.logon.request_count = 0;
@@ -263,6 +382,7 @@ static bool nbt_test_netlogon2(struct torture_context *tctx)
 	logon.req.logon.user_name     = TEST_NAME"$";
 	logon.req.logon.mailslot_name = dgmslot->mailslot_name;
 	logon.req.logon.sid           = *dom_sid;
+	logon.req.logon.acct_control  = ACB_NORMAL;
 	logon.req.logon.nt_version    = 1;
 	logon.req.logon.lmnt_token    = 0xFFFF;
 	logon.req.logon.lm20_token    = 0xFFFF;
@@ -278,10 +398,20 @@ static bool nbt_test_netlogon2(struct torture_context *tctx)
 					      &myname, &logon);
 	torture_assert_ntstatus_ok(tctx, status, "Failed to send netlogon request");
 
-	while (timeval_elapsed(&tv) < 5 && replies == 0) {
+
+	while (timeval_elapsed(&tv) < 5 && dgmslot->private == NULL) {
 		event_loop_once(dgmsock->event_ctx);
 	}
 
+	response = talloc_get_type(dgmslot->private, struct nbt_netlogon_response);
+
+	torture_assert(tctx, response != NULL, "Failed to receive a netlogon reply packet");
+
+	torture_assert_int_equal(tctx, response->response_type, NETLOGON_SAMLOGON, "Got incorrect type of netlogon response");
+	map_netlogon_samlogon_response(&response->samlogon);
+
+	torture_assert_int_equal(tctx, response->samlogon.nt5_ex.command, LOGON_SAM_LOGON_USER_UNKNOWN, "Got incorrect netlogon response command");
+
 	torture_leave_domain(join_ctx);
 	return true;
 }
@@ -295,14 +425,15 @@ static bool nbt_test_ntlogon(struct torture_context *tctx)
 								 lp_iconv_convenience(tctx->lp_ctx));
 	struct socket_address *dest;
 	struct test_join *join_ctx;
+	const struct dom_sid *dom_sid;
 	struct cli_credentials *machine_credentials;
 
 	const char *myaddress;
 	struct nbt_netlogon_packet logon;
+	struct nbt_netlogon_response *response;
 	struct nbt_name myname;
 	NTSTATUS status;
 	struct timeval tv = timeval_current();
-	int replies = 0;
 
 	struct socket_address *socket_address;
 	const char *address;
@@ -342,13 +473,60 @@ static bool nbt_test_ntlogon(struct torture_context *tctx)
 
 	join_ctx = torture_join_domain(tctx, TEST_NAME, 
 				       ACB_WSTRUST, &machine_credentials);
+	dom_sid = torture_join_sid(join_ctx);
+
 	torture_assert(tctx, join_ctx != NULL,
 		       talloc_asprintf(tctx, "Failed to join domain %s as %s\n",
 		       		       lp_workgroup(tctx->lp_ctx), TEST_NAME));
 
 	/* setup a temporary mailslot listener for replies */
 	dgmslot = dgram_mailslot_temp(dgmsock, NBT_MAILSLOT_GETDC,
-				      netlogon_handler, &replies);
+				      netlogon_handler, NULL);
+	
+
+	ZERO_STRUCT(logon);
+	logon.command = LOGON_SAM_LOGON_REQUEST;
+	logon.req.logon.request_count = 0;
+	logon.req.logon.computer_name = TEST_NAME;
+	logon.req.logon.user_name     = TEST_NAME"$";
+	logon.req.logon.mailslot_name = dgmslot->mailslot_name;
+	logon.req.logon.acct_control  = ACB_WSTRUST;
+	/* Try with a SID this time */
+	logon.req.logon.sid           = *dom_sid;
+	logon.req.logon.nt_version    = 1;
+	logon.req.logon.lmnt_token    = 0xFFFF;
+	logon.req.logon.lm20_token    = 0xFFFF;
+
+	make_nbt_name_client(&myname, TEST_NAME);
+
+	dest = socket_address_from_strings(dgmsock, dgmsock->sock->backend_name, 
+					   address, lp_dgram_port(tctx->lp_ctx));
+	torture_assert(tctx, dest != NULL, "Error getting address");
+	status = dgram_mailslot_netlogon_send(dgmsock, 
+					      &name, dest, 
+					      NBT_MAILSLOT_NTLOGON, 
+					      &myname, &logon);
+	torture_assert_ntstatus_ok(tctx, status, "Failed to send ntlogon request");
+
+	while (timeval_elapsed(&tv) < 5 && dgmslot->private == NULL) {
+		event_loop_once(dgmsock->event_ctx);
+	}
+
+	response = talloc_get_type(dgmslot->private, struct nbt_netlogon_response);
+
+	torture_assert(tctx, response != NULL, "Failed to receive a netlogon reply packet");
+
+	torture_assert_int_equal(tctx, response->response_type, NETLOGON_SAMLOGON, "Got incorrect type of netlogon response");
+	map_netlogon_samlogon_response(&response->samlogon);
+
+	torture_assert_int_equal(tctx, response->samlogon.nt5_ex.command, LOGON_SAM_LOGON_RESPONSE, "Got incorrect netlogon response command");
+
+	torture_assert_str_equal(tctx, response->samlogon.nt5_ex.user_name, TEST_NAME"$", "Got incorrect user in netlogon response");
+
+
+	/* setup a temporary mailslot listener for replies */
+	dgmslot = dgram_mailslot_temp(dgmsock, NBT_MAILSLOT_GETDC,
+				      netlogon_handler, NULL);
 	
 
 	ZERO_STRUCT(logon);
@@ -374,10 +552,26 @@ static bool nbt_test_ntlogon(struct torture_context *tctx)
 					      &myname, &logon);
 	torture_assert_ntstatus_ok(tctx, status, "Failed to send ntlogon request");
 
-	while (timeval_elapsed(&tv) < 5 && replies == 0) {
+	while (timeval_elapsed(&tv) < 5 && dgmslot->private == NULL) {
 		event_loop_once(dgmsock->event_ctx);
 	}
 
+	response = talloc_get_type(dgmslot->private, struct nbt_netlogon_response);
+
+	torture_assert(tctx, response != NULL, "Failed to receive a netlogon reply packet");
+
+	torture_assert_int_equal(tctx, response->response_type, NETLOGON_SAMLOGON, "Got incorrect type of netlogon response");
+	map_netlogon_samlogon_response(&response->samlogon);
+
+	torture_assert_int_equal(tctx, response->samlogon.nt5_ex.command, LOGON_SAM_LOGON_RESPONSE, "Got incorrect netlogon response command");
+
+	torture_assert_str_equal(tctx, response->samlogon.nt5_ex.user_name, TEST_NAME"$", "Got incorrect user in netlogon response");
+
+
+	/* setup (another) temporary mailslot listener for replies */
+	dgmslot = dgram_mailslot_temp(dgmsock, NBT_MAILSLOT_GETDC,
+				      netlogon_handler, NULL);
+	
 	ZERO_STRUCT(logon);
 	logon.command = LOGON_PRIMARY_QUERY;
 	logon.req.pdc.computer_name = TEST_NAME;
@@ -398,11 +592,55 @@ static bool nbt_test_ntlogon(struct torture_context *tctx)
 					      &myname, &logon);
 	torture_assert_ntstatus_ok(tctx, status, "Failed to send ntlogon request");
 
-	while (timeval_elapsed(&tv) < 5 && replies == 0) {
+	while (timeval_elapsed(&tv) < 5 && !dgmslot->private) {
 		event_loop_once(dgmsock->event_ctx);
 	}
 
+	response = talloc_get_type(dgmslot->private, struct nbt_netlogon_response);
+
+	torture_assert(tctx, response != NULL, "Failed to receive a netlogon reply packet");
+
+	torture_assert_int_equal(tctx, response->response_type, NETLOGON_GET_PDC, "Got incorrect type of ntlogon response");
+	torture_assert_int_equal(tctx, response->get_pdc.command, NETLOGON_RESPONSE_FROM_PDC, "Got incorrect ntlogon response command");
+
 	torture_leave_domain(join_ctx);
+
+	/* setup (another) temporary mailslot listener for replies */
+	dgmslot = dgram_mailslot_temp(dgmsock, NBT_MAILSLOT_GETDC,
+				      netlogon_handler, NULL);
+	
+	ZERO_STRUCT(logon);
+	logon.command = LOGON_PRIMARY_QUERY;
+	logon.req.pdc.computer_name = TEST_NAME;
+	logon.req.pdc.mailslot_name = dgmslot->mailslot_name;
+	logon.req.pdc.unicode_name  = TEST_NAME;
+	logon.req.pdc.nt_version    = 1;
+	logon.req.pdc.lmnt_token    = 0xFFFF;
+	logon.req.pdc.lm20_token    = 0xFFFF;
+
+	make_nbt_name_client(&myname, TEST_NAME);
+
+	dest = socket_address_from_strings(dgmsock, dgmsock->sock->backend_name, 
+					   address, lp_dgram_port(tctx->lp_ctx));
+	torture_assert(tctx, dest != NULL, "Error getting address");
+	status = dgram_mailslot_netlogon_send(dgmsock, 
+					      &name, dest, 
+					      NBT_MAILSLOT_NTLOGON, 
+					      &myname, &logon);
+	torture_assert_ntstatus_ok(tctx, status, "Failed to send ntlogon request");
+
+	while (timeval_elapsed(&tv) < 5 && !dgmslot->private) {
+		event_loop_once(dgmsock->event_ctx);
+	}
+
+	response = talloc_get_type(dgmslot->private, struct nbt_netlogon_response);
+
+	torture_assert(tctx, response != NULL, "Failed to receive a netlogon reply packet");
+
+	torture_assert_int_equal(tctx, response->response_type, NETLOGON_GET_PDC, "Got incorrect type of ntlogon response");
+	torture_assert_int_equal(tctx, response->get_pdc.command, NETLOGON_RESPONSE_FROM_PDC, "Got incorrect ntlogon response command");
+
+
 	return true;
 }