Packet #875728

Database ID:	875728
Mesh Packet ID:	`0x675f56a9` Used for correlation across gateways
Timestamp:	2026-07-25 01:58:03 UTC
From Node:	Meshtastic 1652 (1652)
To Node:	Mercury (MERC)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	SG-Command (SG-C)
Channel:	LongFast
RSSI:	-110 dBm
SNR:	-13.5 dBm
Hop Info:	3/3 hops Start: 3, Limit: 0
Relay Node:	`44` Last byte of the last hop that relayed this packet

Long Name:	Meshtastic 1652
Short Name:	1652
Node ID:	!a5521652
MAC Address:	81GlUhZS
Hardware:	SEEED_SOLAR_NODE

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:	82 bytes
Gateway:	!e1035fa3
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	3 / 3

Privacy Summary

Exposure Level:
Direct Message

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 1 more...

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

MQTT ServiceEnvelope Fields

Field	Value
`gateway_id`	`!e1035fa3` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (82 bytes) Contains the actual mesh network packet

MeshPacket Fields

Canonical MeshPacket view reconstructed from stored protobuf bytes.

Field	Value	Type
`from`	`2773620306` Source node ID	uint32
`to`	`1870442398` Target node ID	uint32
`decoded.portnum`	`NODEINFO_APP` NODEINFO_APP	enum
`decoded.payload_length`	`82` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	`3` Initial hop limit	uint32
`hops_taken`	`3` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-110.0` dBm Signal strength at gateway	int32
`rx_snr`	`-13.50` dB Signal quality at gateway	float
`rx_time`	`1784944676` Receive timestamp	fixed32
`via_mqtt`	False Direct LoRa transmission	bool
`want_ack`	False No ACK requested	bool
`priority`	Not set	enum
`delayed`	Not set	enum
`channel`	`8` Channel index	uint32
`pki_encrypted`	False Standard encryption	bool
`next_hop`	Not set	uint32
`relay_node`	`68` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	Not set	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)
✓ Targeted to specific node
✓ Gateway node ID tracked

Exposure Risks:

⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (3 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!e1035fa3`
Signal Metrics:	RSSI: -110.0 dBm SNR: -13.50 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	82 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!a5521652", "long_name": "Meshtastic 1652", "short_name": "1652", "macaddr": "81GlUhZS", "hw_model": "SEEED_SOLAR_NODE" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "packet": { "from": 2773620306, "to": 1870442398, "channel": 8, "decoded": { "portnum": "NODEINFO_APP", "payload": "CgkhYTU1MjE2NTISD01lc2h0YXN0aWMgMTY1MhoEMTY1MiIG81GlUhZSKF84DEIgega3qPCu8SL3t0Qp21y7qfCTU08RdCor1+0mCt8xzHJIAA==", "request_id": 69615062, "bitfield": 1 }, "id": 1734301353, "rx_time": 1784944676, "rx_snr": -13.5, "rx_rssi": -110, "hop_start": 3, "relay_node": 68, "transport_mechanism": "TRANSPORT_LORA" }, "channel_id": "LongFast", "gateway_id": "!e1035fa3" }, "mesh_packet": { "from": 2773620306, "to": 1870442398, "channel": 8, "decoded": { "portnum": "NODEINFO_APP", "payload": "CgkhYTU1MjE2NTISD01lc2h0YXN0aWMgMTY1MhoEMTY1MiIG81GlUhZSKF84DEIgega3qPCu8SL3t0Qp21y7qfCTU08RdCor1+0mCt8xzHJIAA==", "request_id": 69615062, "bitfield": 1, "parsed_payload": { "id": "!a5521652", "long_name": "Meshtastic 1652", "short_name": "1652", "macaddr": "81GlUhZS", "hw_model": "SEEED_SOLAR_NODE", "role": "CLIENT_BASE", "public_key": "ega3qPCu8SL3t0Qp21y7qfCTU08RdCor1+0mCt8xzHI=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } }, "id": 1734301353, "rx_time": 1784944676, "rx_snr": -13.5, "rx_rssi": -110, "hop_start": 3, "relay_node": 68, "transport_mechanism": "TRANSPORT_LORA" } }

Raw Packet Data (82 bytes)

0a09216135353231363532120f4d65736874617374696320313635321a04313635322206f351a5521652285f380c42207a06b7a8f0aef122f7b74429db5cbba9f093534f11742a2bd7ed260adf31cc724800

Hex Analysis:

Size:	82 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 #875728 Success

Packet Information

Payload Data

Decoded Data: