Packet #237201

Database ID:	237201
Mesh Packet ID:	`0x25913724` Used for correlation across gateways
Timestamp:	2026-04-08 07:34:17 UTC
From Node:	Wedneday's Lair (CATS)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	homebase.mesh.sdr.lol (SDRB)
Channel:	LongFast
RSSI:	-107 dBm
SNR:	-4.25 dBm
Hop Info:	2/5 hops Start: 5, Limit: 3
Relay Node:	`7a` RRak Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions

Long Name:	Wedneday's Lair
Short Name:	CATS
Node ID:	!699c8f50
MAC Address:	kHBpnI9Q
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:	80 bytes
Gateway:	!43571a2c
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	2 / 5

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`	`!43571a2c` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (80 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`1771867984` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`80` bytes	size
`hop_limit`	`3` Remaining hops allowed	uint32
`hop_start`	`5` Initial hop limit	uint32
`hops_taken`	`2` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-107.0` dBm Signal strength at gateway	int32
`rx_snr`	`-4.25` dB Signal quality at gateway	float
`rx_time`	`1775633654` 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`	`122` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1775633657.0589466` 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 (2 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!43571a2c`
Signal Metrics:	RSSI: -107.0 dBm SNR: -4.25 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	80 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!699c8f50", "long_name": "Wedneday's Lair", "short_name": "CATS", "macaddr": "kHBpnI9Q", "hw_model": "HELTEC_V4" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!43571a2c", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1771867984, "to": 4294967295, "id": 630273828, "rx_time": 1775633654, "rx_snr": -4.25, "rx_rssi": -107, "hop_limit": 3, "hop_start": 5, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 122, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09213639396338663530120f5765646e656461792773204c6169721a044341545322069070699c8f50286e422093c0f7bf6dd2a0df67b6991e306e18d88eca5bad49c222bc0ca014e980794a3b4800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!699c8f50", "long_name": "Wedneday's Lair", "short_name": "CATS", "macaddr": "kHBpnI9Q", "hw_model": "HELTEC_V4", "public_key": "k8D3v23SoN9ntpkeMG4Y2I7KW61JwiK8DKAU6YB5Sjs=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (80 bytes)

0a09213639396338663530120f5765646e656461792773204c6169721a044341545322069070699c8f50286e422093c0f7bf6dd2a0df67b6991e306e18d88eca5bad49c222bc0ca014e980794a3b4800

Hex Analysis:

Size:	80 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 #237201 Success

Packet Information

Payload Data

Decoded Data: