Packet #2063457

Database ID:	2063457
Mesh Packet ID:	`0x0540035c` Used for correlation across gateways
Timestamp:	2025-06-27 23:22:02 UTC
From Node:	ismatori T-DECK 📟 (GROF)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	ismatori T1000E 📟 (GRIF)
Channel:	LongFast
RSSI:	-2 dBm
SNR:	9.75 dBm
Hop Info:	0/5 hops Start: 5, Limit: 5

Long Name:	T-DECK ismatori 📟
Short Name:	GROF
Node ID:	!9e06dcd8
MAC Address:	8J6eBtzY
Hardware:	T_DECK

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:	85 bytes
Gateway:	!d772c0a2
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	Unknown / 5

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked
+ 1 more...

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
+ 2 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!d772c0a2` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (85 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2651249880` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`85` bytes	size
`hop_limit`	`5` Remaining hops allowed	uint32
`hop_start`	`5` Initial hop limit	uint32
`hops_taken`	`0` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-2.0` dBm Signal strength at gateway	int32
`rx_snr`	`9.75` dB Signal quality at gateway	float
`rx_time`	`1751066519` 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`	`216` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1751066522.1533327` 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
✓ Zero-hop: direct from source to MQTT gateway

Exposure Risks:

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

MQTT-Specific Fields

Gateway ID:	`!d772c0a2`
Zero Hop Policy:	Enabled Direct gateway connection
Signal Metrics:	RSSI: -2.0 dBm SNR: 9.75 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	85 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!9e06dcd8", "long_name": "T-DECK ismatori 📟", "short_name": "GROF", "macaddr": "8J6eBtzY", "hw_model": "T_DECK" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!d772c0a2", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2651249880, "to": 4294967295, "id": 88081244, "rx_time": 1751066519, "rx_snr": 9.75, "rx_rssi": -2, "hop_limit": 5, "hop_start": 5, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 216, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a092139653036646364381214542d4445434b2069736d61746f726920f09f939f1a0447524f462206f09e9e06dcd8283238014220b836cc4b1d70f387308bf9f930e4b98792101129e7fff3c2d1e2372336071a5a", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!9e06dcd8", "long_name": "T-DECK ismatori 📟", "short_name": "GROF", "macaddr": "8J6eBtzY", "hw_model": "T_DECK", "role": "CLIENT_MUTE", "public_key": "uDbMSx1w84cwi/n5MOS5h5IQESnn//PC0eI3IzYHGlo=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (85 bytes)

0a092139653036646364381214542d4445434b2069736d61746f726920f09f939f1a0447524f462206f09e9e06dcd8283238014220b836cc4b1d70f387308bf9f930e4b98792101129e7fff3c2d1e2372336071a5a

Hex Analysis:

Size:	85 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 #2063457 Success

Packet Information

Payload Data

Decoded Data: