Packet #10534817

Database ID:	10534817
Mesh Packet ID:	`0xccde3b0d` Used for correlation across gateways
Timestamp:	2026-02-26 23:41:14 UTC
From Node:	Mesh mosrentgen (glbg)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Tsaritsyno_KB_U_868 (KBU8)
Channel:	LongFast
RSSI:	-108 dBm
SNR:	-1.25 dBm
Hop Info:	7/7 hops Start: 7, Limit: 0

Long Name:	Meshtastic Mosrentgen
Short Name:	glbm
Node ID:	!a6961e28
MAC Address:	iFamlh4o
Hardware:	HELTEC_V4

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:	86 bytes
Gateway:	!db2964b0
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	7 / 7

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
+ 3 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!db2964b0` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (86 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2794855976` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`86` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	`7` Initial hop limit	uint32
`hops_taken`	`7` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-108.0` dBm Signal strength at gateway	int32
`rx_snr`	`-1.25` dB Signal quality at gateway	float
`rx_time`	`1772138472` 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`	`224` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1772138474.6250281` Unix timestamp	uint32

MQTT Privacy & Exposure Analysis

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

Exposure Level: Broadcast

Privacy Features:

✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (7 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!db2964b0`
Signal Metrics:	RSSI: -108.0 dBm SNR: -1.25 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	86 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!a6961e28", "long_name": "Meshtastic Mosrentgen", "short_name": "glbm", "macaddr": "iFamlh4o", "hw_model": "HELTEC_V4" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!db2964b0", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2794855976, "to": 4294967295, "id": 3437116173, "rx_time": 1772138472, "rx_snr": -1.25, "rx_rssi": -108, "hop_limit": 0, "hop_start": 7, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 224, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a0921613639363165323812154d657368746173746963204d6f7372656e7467656e1a04676c626d22068856a6961e28286e42202f3f2a0c36456b7b4eae615e70873a816ddaaeb0546046c6c1919376b31217194800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!a6961e28", "long_name": "Meshtastic Mosrentgen", "short_name": "glbm", "macaddr": "iFamlh4o", "hw_model": "HELTEC_V4", "public_key": "Lz8qDDZFa3tOrmFecIc6gW3arrBUYEbGwZGTdrMSFxk=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (86 bytes)

0a0921613639363165323812154d657368746173746963204d6f7372656e7467656e1a04676c626d22068856a6961e28286e42202f3f2a0c36456b7b4eae615e70873a816ddaaeb0546046c6c1919376b31217194800

Hex Analysis:

Size:	86 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 #10534817 Success

Packet Information

Payload Data

Decoded Data: