Packet #173043

Packet Information

Database ID:	173043
Mesh Packet ID:	`0xd52d91ac` Used for correlation across gateways
Timestamp:	2025-11-25 17:04:58 UTC
From Node:	Snagles LZ1S/p SWATbg 🇧🇬 ⛑️ (LIMA)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	TEXT_MESSAGE_APP Port: 1

Gateway:	init Lab (INIT)
Channel:	Bulgaria
RSSI:	-110 dBm
SNR:	-4.75 dBm
Hop Info:	1/2 hops Start: 2, Limit: 1
Relay Node:	`28` Last byte of the last hop that relayed this packet

Payload Data

Protocol: TEXT_MESSAGE_APP

Size: 33 bytes

Decoded: Yes

Text Content:

Дали влизам от ндк

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:	33 bytes
Gateway:	!d45ba23c
Channel:	Bulgaria
Payload Type:	TEXT_MESSAGE_APP
Hop Count:	1 / 2

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: Bulgaria
+ 1 more...

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
+ 2 more...

MQTT ServiceEnvelope Fields

Field	Value
`gateway_id`	`!d45ba23c` Node ID format
`channel_id`	`Bulgaria`
`packet`	`MeshPacket` (33 bytes) Contains the actual mesh network packet

MeshPacket Fields

Canonical MeshPacket view reconstructed from stored protobuf bytes.

Field	Value	Type
`from`	`2915867514` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`TEXT_MESSAGE_APP` TEXT_MESSAGE_APP	enum
`decoded.payload_length`	`33` bytes	size
`hop_limit`	`1` Remaining hops allowed	uint32
`hop_start`	`2` Initial hop limit	uint32
`hops_taken`	`1` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-110.0` dBm Signal strength at gateway	int32
`rx_snr`	`-4.75` dB Signal quality at gateway	float
`rx_time`	`1764090298` 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`	`37` Channel index	uint32
`pki_encrypted`	False Standard encryption	bool
`next_hop`	Not set	uint32
`relay_node`	`40` 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: Broadcast

Privacy Features:

✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: Bulgaria
✓ Gateway node ID tracked

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (1 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!d45ba23c`
Signal Metrics:	RSSI: -110.0 dBm SNR: -4.75 dB

Complete Protobuf Decode (JSON)

{ "service_envelope": { "packet": { "from": 2915867514, "to": 4294967295, "channel": 37, "decoded": { "portnum": "TEXT_MESSAGE_APP", "payload": "0JTQsNC70Lgg0LLQu9C40LfQsNC8INC+0YIg0L3QtNC6", "bitfield": 1 }, "id": 3576533420, "rx_time": 1764090298, "rx_snr": -4.75, "hop_limit": 1, "rx_rssi": -110, "hop_start": 2, "relay_node": 40, "transport_mechanism": "TRANSPORT_LORA" }, "channel_id": "Bulgaria", "gateway_id": "!d45ba23c" }, "mesh_packet": { "from": 2915867514, "to": 4294967295, "channel": 37, "decoded": { "portnum": "TEXT_MESSAGE_APP", "payload": "0JTQsNC70Lgg0LLQu9C40LfQsNC8INC+0YIg0L3QtNC6", "bitfield": 1, "parsed_payload": { "text": "Дали влизам от ндк", "type": "text_message", "portnum": "TEXT_MESSAGE_APP" } }, "id": 3576533420, "rx_time": 1764090298, "rx_snr": -4.75, "hop_limit": 1, "rx_rssi": -110, "hop_start": 2, "relay_node": 40, "transport_mechanism": "TRANSPORT_LORA" } }

Raw Packet Data (33 bytes)

d094d0b0d0bbd0b820d0b2d0bbd0b8d0b7d0b0d0bc20d0bed18220d0bdd0b4d0ba

Hex Analysis:

Size:	33 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.

All Receptions

All gateways that received this packet
Correlation: Using Mesh Packet ID

Gateway	Time Offset	RSSI	SNR	Hops	Relay	Channel	Timestamp	Actions
init Lab (INIT) Primary	0.000s Reference	-110.0 dBm	-4.75 dB	1	`28`	Bulgaria	2025-11-25 17:04:58 UTC	Current
No other receptions found within ±2 seconds

1

Total Receptions

1

Unique Gateways

Packet #173043 Success