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Signed-off-by: lns <[email protected]> Signed-off-by: Toni Uhlig <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,101 @@ | ||
| /* | ||
| * bacnet.c | ||
| * | ||
| * Building Automation and Control Network | ||
| * | ||
| * Copyright (C) 2023 - ntop.org | ||
| * | ||
| * nDPI is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU Lesser General Public License as published by | ||
| * the Free Software Foundation, either version 3 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * nDPI is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU Lesser General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU Lesser General Public License | ||
| * along with nDPI. If not, see <http://www.gnu.org/licenses/>. | ||
| * | ||
| */ | ||
|
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|
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| #include "ndpi_protocol_ids.h" | ||
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| #define NDPI_CURRENT_PROTO NDPI_PROTOCOL_BACNET | ||
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| #include "ndpi_api.h" | ||
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| // BVLC (BACnet Virtual Link Control) Annex is part of BVLL (BACnet Virtual Link Layer). | ||
| // See: https://www.ashrae.org/file%20library/technical%20resources/standards%20and%20guidelines/standards%20addenda/135-1995_addendum-a.pdf | ||
| PACK_ON | ||
| struct bvlc_header { | ||
| uint8_t type; | ||
| uint8_t function; | ||
| uint16_t length; | ||
| } PACK_OFF; | ||
|
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||
| static void ndpi_int_bacnet_add_connection(struct ndpi_detection_module_struct * const ndpi_struct, | ||
| struct ndpi_flow_struct * const flow) | ||
| { | ||
| NDPI_LOG_INFO(ndpi_struct, "found BACnet\n"); | ||
|
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| ndpi_set_detected_protocol(ndpi_struct, flow, | ||
| NDPI_PROTOCOL_BACNET, | ||
| NDPI_PROTOCOL_UNKNOWN, | ||
| NDPI_CONFIDENCE_DPI); | ||
| } | ||
|
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| /* ***************************************************** */ | ||
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| static void ndpi_search_bacnet(struct ndpi_detection_module_struct *ndpi_struct, | ||
| struct ndpi_flow_struct *flow) | ||
| { | ||
| struct ndpi_packet_struct const * const packet = &ndpi_struct->packet; | ||
| struct bvlc_header const * const bvlc = (struct bvlc_header *)&packet->payload[0]; | ||
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| NDPI_LOG_DBG(ndpi_struct, "search BACnet\n"); | ||
|
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| if (packet->payload_packet_len < sizeof(*bvlc)) | ||
| { | ||
| NDPI_EXCLUDE_PROTO(ndpi_struct, flow); | ||
| return; | ||
| } | ||
|
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| if (bvlc->type != 0x81) | ||
| { | ||
| NDPI_EXCLUDE_PROTO(ndpi_struct, flow); | ||
| return; | ||
| } | ||
|
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| if (bvlc->function > 0x0b) | ||
| { | ||
| NDPI_EXCLUDE_PROTO(ndpi_struct, flow); | ||
| return; | ||
| } | ||
|
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| if (ntohs(bvlc->length) != packet->payload_packet_len) | ||
| { | ||
| NDPI_EXCLUDE_PROTO(ndpi_struct, flow); | ||
| return; | ||
| } | ||
|
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| ndpi_int_bacnet_add_connection(ndpi_struct, flow); | ||
| } | ||
|
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| /* ***************************************************** */ | ||
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| void init_bacnet_dissector(struct ndpi_detection_module_struct *ndpi_struct, | ||
| u_int32_t *id) | ||
| { | ||
| ndpi_set_bitmask_protocol_detection("BACnet", ndpi_struct, *id, | ||
| NDPI_PROTOCOL_BACNET, | ||
| ndpi_search_bacnet, | ||
| NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_UDP_WITH_PAYLOAD, | ||
| SAVE_DETECTION_BITMASK_AS_UNKNOWN, | ||
| ADD_TO_DETECTION_BITMASK | ||
| ); | ||
|
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| *id += 1; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,34 @@ | ||
| Guessed flow protos: 0 | ||
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| DPI Packets (UDP): 10 (1.00 pkts/flow) | ||
| Confidence DPI : 10 (flows) | ||
| Num dissector calls: 10 (1.00 diss/flow) | ||
| LRU cache ookla: 0/0/0 (insert/search/found) | ||
| LRU cache bittorrent: 0/0/0 (insert/search/found) | ||
| LRU cache zoom: 0/0/0 (insert/search/found) | ||
| LRU cache stun: 0/0/0 (insert/search/found) | ||
| LRU cache tls_cert: 0/0/0 (insert/search/found) | ||
| LRU cache mining: 0/0/0 (insert/search/found) | ||
| LRU cache msteams: 0/0/0 (insert/search/found) | ||
| LRU cache stun_zoom: 0/0/0 (insert/search/found) | ||
| Automa host: 0/0 (search/found) | ||
| Automa domain: 0/0 (search/found) | ||
| Automa tls cert: 0/0 (search/found) | ||
| Automa risk mask: 0/0 (search/found) | ||
| Automa common alpns: 0/0 (search/found) | ||
| Patricia risk mask: 20/0 (search/found) | ||
| Patricia risk: 20/0 (search/found) | ||
| Patricia protocols: 20/0 (search/found) | ||
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| BACnet 23 1373 10 | ||
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| 1 UDP 204.172.177.255:47808 -> 204.172.177.159:47808 [proto: 334/BACnet][IP: 0/Unknown][ClearText][Confidence: DPI][DPI packets: 1][cat: IoT-Scada/31][14 pkts/833 bytes -> 0 pkts/0 bytes][Goodput ratio: 29/0][221.21 sec][bytes ratio: 1.000 (Upload)][IAT c2s/s2c min/avg/max/stddev: 1387/0 17424/0 43334/0 13696/0][Pkt Len c2s/s2c min/avg/max/stddev: 54/0 60/0 67/0 5/0][Risk: ** Unidirectional Traffic **][Risk Score: 10][Risk Info: No server to client traffic][Plen Bins: 100,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0] | ||
| 2 UDP 64.62.197.26:36992 -> 90.147.69.221:47808 [proto: 334/BACnet][IP: 0/Unknown][ClearText][Confidence: DPI][DPI packets: 1][cat: IoT-Scada/31][1 pkts/60 bytes -> 0 pkts/0 bytes][Goodput ratio: 28/0][< 1 sec][Risk: ** Unidirectional Traffic **][Risk Score: 10][Risk Info: No server to client traffic][Plen Bins: 100,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0] | ||
| 3 UDP 64.62.197.166:36664 -> 90.147.69.213:47808 [proto: 334/BACnet][IP: 0/Unknown][ClearText][Confidence: DPI][DPI packets: 1][cat: IoT-Scada/31][1 pkts/60 bytes -> 0 pkts/0 bytes][Goodput ratio: 28/0][< 1 sec][Risk: ** Unidirectional Traffic **][Risk Score: 10][Risk Info: No server to client traffic][Plen Bins: 100,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0] | ||
| 4 UDP 65.49.20.98:53234 -> 90.147.69.219:47808 [proto: 334/BACnet][IP: 0/Unknown][ClearText][Confidence: DPI][DPI packets: 1][cat: IoT-Scada/31][1 pkts/60 bytes -> 0 pkts/0 bytes][Goodput ratio: 28/0][< 1 sec][Risk: ** Unidirectional Traffic **][Risk Score: 10][Risk Info: No server to client traffic][Plen Bins: 100,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0] | ||
| 5 UDP 162.142.125.132:29782 -> 90.147.69.219:47808 [proto: 334/BACnet][IP: 0/Unknown][ClearText][Confidence: DPI][DPI packets: 1][cat: IoT-Scada/31][1 pkts/60 bytes -> 0 pkts/0 bytes][Goodput ratio: 28/0][< 1 sec][Risk: ** Unidirectional Traffic **][Risk Score: 10][Risk Info: No server to client traffic][Plen Bins: 100,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0] | ||
| 6 UDP 162.142.125.140:63852 -> 90.147.69.217:47808 [proto: 334/BACnet][IP: 0/Unknown][ClearText][Confidence: DPI][DPI packets: 1][cat: IoT-Scada/31][1 pkts/60 bytes -> 0 pkts/0 bytes][Goodput ratio: 28/0][< 1 sec][Risk: ** Unidirectional Traffic **][Risk Score: 10][Risk Info: No server to client traffic][Plen Bins: 100,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0] | ||
| 7 UDP 167.94.138.111:27041 -> 90.147.69.212:47808 [proto: 334/BACnet][IP: 0/Unknown][ClearText][Confidence: DPI][DPI packets: 1][cat: IoT-Scada/31][1 pkts/60 bytes -> 0 pkts/0 bytes][Goodput ratio: 28/0][< 1 sec][Risk: ** Unidirectional Traffic **][Risk Score: 10][Risk Info: No server to client traffic][Plen Bins: 100,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0] | ||
| 8 UDP 198.235.24.39:54587 -> 90.147.69.210:47808 [proto: 334/BACnet][IP: 0/Unknown][ClearText][Confidence: DPI][DPI packets: 1][cat: IoT-Scada/31][1 pkts/60 bytes -> 0 pkts/0 bytes][Goodput ratio: 28/0][< 1 sec][Risk: ** Unidirectional Traffic **][Risk Score: 10][Risk Info: No server to client traffic][Plen Bins: 100,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0] | ||
| 9 UDP 198.235.24.45:51922 -> 90.147.69.219:47808 [proto: 334/BACnet][IP: 0/Unknown][ClearText][Confidence: DPI][DPI packets: 1][cat: IoT-Scada/31][1 pkts/60 bytes -> 0 pkts/0 bytes][Goodput ratio: 28/0][< 1 sec][Risk: ** Unidirectional Traffic **][Risk Score: 10][Risk Info: No server to client traffic][Plen Bins: 100,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0] | ||
| 10 UDP 198.235.24.166:56883 -> 90.147.69.222:47808 [proto: 334/BACnet][IP: 0/Unknown][ClearText][Confidence: DPI][DPI packets: 1][cat: IoT-Scada/31][1 pkts/60 bytes -> 0 pkts/0 bytes][Goodput ratio: 28/0][< 1 sec][Risk: ** Unidirectional Traffic **][Risk Score: 10][Risk Info: No server to client traffic][Plen Bins: 100,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0] |
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