Packet #21941

Database ID:	21941
Mesh Packet ID:	`0x33535777` Used for correlation across gateways
Timestamp:	2026-03-15 17:01:09 UTC
From Node:	BM WMT 1 (BMt1)
To Node:	Joe’s T1000-E (👾)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Bryn Mawr Base (BRYN)
Channel:	LongFast
RSSI:	-79 dBm
SNR:	5.25 dBm
Hop Info:	4/4 hops Start: 4, Limit: 0
Relay Node:	`94` 2N39 , BM- Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions

Long Name:	BM WMT 1
Short Name:	BMt1
Node ID:	!1ba10b12
MAC Address:	AAAAAAAA
Hardware:	WISMESH_TAG

Raw Packet Analysis

Complete field breakdown and MQTT privacy/exposure analysis

Packet Structure

MQTT Packet Flow:
ServiceEnvelope (MQTT layer) → MeshPacket (Mesh layer) → Decoded Payload (Application data)

Total Size:	73 bytes
Gateway:	!16ced548
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	4 / 4

Privacy Summary

Exposure Level:
Direct Message

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Acknowledgment requested
+ 2 more...

Exposure Risks:
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
+ 2 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!16ced548` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (73 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`463538962` Source node ID	uint32
`to`	`3977924625` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`73` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	`4` Initial hop limit	uint32
`hops_taken`	`4` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-79.0` dBm Signal strength at gateway	int32
`rx_snr`	`5.25` dB Signal quality at gateway	float
`rx_time`	`1773594067` Receive timestamp	fixed32
`via_mqtt`	False Direct LoRa transmission	bool
`want_ack`	True Acknowledgment requested	bool
`priority`	Not set	enum
`delayed`	Not set	enum
`channel`	Not set	uint32
`pki_encrypted`	False Standard encryption	bool
`next_hop`	Not set	uint32
`relay_node`	`148` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1773594069.365749` Unix timestamp	uint32

MQTT Privacy & Exposure Analysis

Analysis of privacy features and exposure risks when packet is shared via MQTT

Exposure Level: Direct Message

Privacy Features:

✓ Direct LoRa transmission (not via MQTT)
✓ Acknowledgment requested
✓ Targeted to specific node
✓ Gateway node ID tracked

Exposure Risks:

⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (4 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Want ack:	`True`
Gateway ID:	`!16ced548`
Signal Metrics:	RSSI: -79.0 dBm SNR: 5.25 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	73 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!1ba10b12", "long_name": "BM WMT 1", "short_name": "BMt1", "macaddr": "AAAAAAAA", "hw_model": "WISMESH_TAG" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!16ced548", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 463538962, "to": 3977924625, "id": 861099895, "rx_time": 1773594067, "rx_snr": 5.25, "rx_rssi": -79, "hop_limit": 0, "hop_start": 4, "via_mqtt": 0, "want_ack": 1, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 148, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a092131626131306231321208424d20574d5420311a04424d74312206000000000000286938014220263deb89720735cf029e538fa17eecbaa72dbda2bec54a5234af30fee2a91b7c", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!1ba10b12", "long_name": "BM WMT 1", "short_name": "BMt1", "macaddr": "AAAAAAAA", "hw_model": "WISMESH_TAG", "role": "CLIENT_MUTE", "public_key": "Jj3riXIHNc8CnlOPoX7suqctvaK+xUpSNK8w/uKpG3w=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (73 bytes)

0a092131626131306231321208424d20574d5420311a04424d74312206000000000000286938014220263deb89720735cf029e538fa17eecbaa72dbda2bec54a5234af30fee2a91b7c

Hex Analysis:

Size:	73 bytes
Format:	Protobuf (Protocol Buffers)
Encoding:	Binary with varint and length-delimited fields

This is the raw protobuf-encoded payload as received from MQTT. The structure follows the Meshtastic protobuf schema definitions.

Packet #21941 Success

Packet Information

Payload Data

Decoded Data: