Packet #694523

Database ID:	694523
Mesh Packet ID:	`0x3d9d20f2` Used for correlation across gateways
Timestamp:	2026-01-21 17:29:24 UTC
From Node:	homshtastic2 (hom2)
To Node:	!13351074 (1074)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Meshtastic 989c (989c)
Channel:	LongFast
RSSI:	-101 dBm
SNR:	-14.5 dBm
Hop Info:	1/3 hops Start: 3, Limit: 2

Long Name:	homshtastic2
Short Name:	hom2
Node ID:	!aa530dcd
MAC Address:	+o2qUw3N
Hardware:	HELTEC_MESH_NODE_T114

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:	77 bytes
Gateway:	!6985989c
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	1 / 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

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!6985989c` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (77 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2857569741` Source node ID	uint32
`to`	`322244724` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`77` bytes	size
`hop_limit`	`2` Remaining hops allowed	uint32
`hop_start`	`3` Initial hop limit	uint32
`hops_taken`	`1` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-101.0` dBm Signal strength at gateway	int32
`rx_snr`	`-14.50` dB Signal quality at gateway	float
`rx_time`	`1769002438` 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`	Not set	uint32
`pki_encrypted`	False Standard encryption	bool
`next_hop`	Not set	uint32
`relay_node`	`116` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1769002164.9737608` 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)
✓ Targeted to specific node
✓ Gateway node ID tracked

Exposure Risks:

⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (1 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!6985989c`
Signal Metrics:	RSSI: -101.0 dBm SNR: -14.50 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	77 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!aa530dcd", "long_name": "homshtastic2", "short_name": "hom2", "macaddr": "+o2qUw3N", "hw_model": "HELTEC_MESH_NODE_T114" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!6985989c", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2857569741, "to": 322244724, "id": 1033707762, "rx_time": 1769002438, "rx_snr": -14.5, "rx_rssi": -101, "hop_limit": 2, "hop_start": 3, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 116, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09216161353330646364120c686f6d7368746173746963321a04686f6d322206fa8daa530dcd28454220225065301b4ffaec7c78278fe797ca8b5c6d0fcb9be5257e29f9e1f3abead0024800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!aa530dcd", "long_name": "homshtastic2", "short_name": "hom2", "macaddr": "+o2qUw3N", "hw_model": "HELTEC_MESH_NODE_T114", "public_key": "IlBlMBtP+ux8eCeP55fKi1xtD8ub5SV+Kfnh86vq0AI=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (77 bytes)

0a09216161353330646364120c686f6d7368746173746963321a04686f6d322206fa8daa530dcd28454220225065301b4ffaec7c78278fe797ca8b5c6d0fcb9be5257e29f9e1f3abead0024800

Hex Analysis:

Size:	77 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 #694523 Success

Packet Information

Payload Data

Decoded Data: