Packet #1021993

Database ID:	1021993
Mesh Packet ID:	`0x96ce3869` Used for correlation across gateways
Timestamp:	2025-10-20 15:36:29 UTC
From Node:	CMRG Jefferson City 01 (JC01)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	PizzaDeliveryDude \| nyme.sh (PDD0)
Channel:	LongFast
RSSI:	-126 dBm
SNR:	-17.25 dBm
Hop Info:	1/7 hops Start: 7, Limit: 6
Relay Node:	None

Long Name:	CMRG Jefferson City 01
Short Name:	JC01
Node ID:	!4bd276a9
MAC Address:	0D9L0nap
Hardware:	RAK4631

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:	87 bytes
Gateway:	!0283d63d
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	1 / 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`	`!0283d63d` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (87 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`1272084137` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`87` bytes	size
`hop_limit`	`6` Remaining hops allowed	uint32
`hop_start`	`7` Initial hop limit	uint32
`hops_taken`	`1` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-126.0` dBm Signal strength at gateway	int32
`rx_snr`	`-17.25` dB Signal quality at gateway	float
`rx_time`	`1760974620` 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`	Not set	uint32
`tx_after`	Not set	uint32
`timestamp`	`1760974589.4706175` 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 (1 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!0283d63d`
Signal Metrics:	RSSI: -126.0 dBm SNR: -17.25 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	87 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!4bd276a9", "long_name": "CMRG Jefferson City 01", "short_name": "JC01", "macaddr": "0D9L0nap", "hw_model": "RAK4631" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!0283d63d", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1272084137, "to": 4294967295, "id": 2530097257, "rx_time": 1760974620, "rx_snr": -17.25, "rx_rssi": -126, "hop_limit": 6, "hop_start": 7, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 0, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a092134626432373661391216434d5247204a6566666572736f6e20436974792030311a044a4330312206d03f4bd276a9280938024220465e1b90c735221610dcfb8c007d7e80f70e8bf448fa4ed9e9ffe9846e83812e", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!4bd276a9", "long_name": "CMRG Jefferson City 01", "short_name": "JC01", "macaddr": "0D9L0nap", "hw_model": "RAK4631", "role": "ROUTER", "public_key": "Rl4bkMc1IhYQ3PuMAH1+gPcOi/RI+k7Z6f/phG6DgS4=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (87 bytes)

0a092134626432373661391216434d5247204a6566666572736f6e20436974792030311a044a4330312206d03f4bd276a9280938024220465e1b90c735221610dcfb8c007d7e80f70e8bf448fa4ed9e9ffe9846e83812e

Hex Analysis:

Size:	87 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 #1021993 Success

Packet Information

Payload Data

Decoded Data: