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UDP traffic

Datagrams matching port:13746 sent to HoneyLabs sensors over UDP in the last 7 days. DNS questions and QUIC client fingerprints are decoded on the sensor. Other datagrams are kept as their first bytes and labelled by protocol where it can be recognised.

A UDP source address can be forged, so each address listed here either sent the traffic or was impersonated by whoever did. UDP traffic is kept out of verdicts, feeds, watchlists and alerts.

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26

Datagrams

25

Source addresses

2

Networks

1

Countries

1

Destination ports

Traffic by type

Service queries

1 datagrams from 1 source

Requests a service answers without a handshake. Scanners send them to find open DNS, NTP, SNMP or SSDP servers, which are also the servers reflection attacks abuse.

DNS 1

Latest DNS datagram, to 13746/udp

DNS query A ip.parrotdns.com

payload bytes
00000000  70 9a 01 00 00 01 00 00  00 00 00 01 02 69 70 09  |p............ip.|
00000010  70 61 72 72 6f 74 64 6e  73 03 63 6f 6d 00 00 01  |parrotdns.com...|
00000020  00 01 00 00 29 02 00 00  00 80 00 00 00           |....)........|

Other services

25 datagrams from 24 sources

First packets of sessions with VPN, voice, tunnelling, database and management services.

DTLS 25

Latest DTLS datagram, to 13746/udp

·6·*·*·|w@·"·ʬ d/·"d·0·/·

payload bytes
00000000  16 fe ff 00 00 00 00 00  00 00 00 00 36 01 00 00  |............6...|
00000010  2a 00 00 00 00 00 00 00  2a fe fd 00 00 00 00 7c  |*.......*......||
00000020  77 40 1e 8a c8 22 a0 a0  18 ff 93 08 ca ac 0a 64  |w@...".........d|
00000030  2f c9 22 64 bc 08 a8 16  89 19 30 00 00 00 02 00  |/."d......0.....|
00000040  2f 01 00                                          |/..|

Amplification checks

Probes for services that answer a small request with a much larger reply, the property reflection attacks rely on.

ServicePortDatagramsSourcesFactor
DNS13746/udp1128 to 54

The factor is how many bytes a reachable server can send back for each byte it receives, as published by CISA in alert TA14-017A.

Destination ports

DNS questions

DNS record types

Networks

Countries

Source addresses (unverified)

AddressNetworkCcSendsDatagramsLast seen (UTC)
198.235.24.179AS396982 Google LLCUSDTLS22026-10-09 23:21
198.235.24.81AS396982 Google LLCUSDTLS12026-10-07 18:34
205.210.31.236AS396982 Google LLCUSDTLS12026-10-10 18:40
205.210.31.185AS396982 Google LLCUSDTLS12026-10-06 11:25
66.132.172.249AS398324 Censys, Inc.USDNS12026-10-09 21:44
205.210.31.208AS396982 Google LLCUSDTLS12026-10-10 06:31
198.235.24.164AS396982 Google LLCUSDTLS12026-10-09 02:08
147.185.132.12AS396982 Google LLCUSDTLS12026-10-07 06:09
198.235.24.124AS396982 Google LLCUSDTLS12026-10-09 06:45
205.210.31.164AS396982 Google LLCUSDTLS12026-10-07 11:04
216.25.89.95AS396982 Google LLCUSDTLS12026-10-06 04:23
198.235.24.185AS396982 Google LLCUSDTLS12026-10-06 01:18
205.210.31.88AS396982 Google LLCUSDTLS12026-10-06 03:34
205.210.31.47AS396982 Google LLCUSDTLS12026-10-08 19:05
147.185.132.97AS396982 Google LLCUSDTLS12026-10-08 10:24
147.185.132.57AS396982 Google LLCUSDTLS12026-10-08 00:09
198.235.24.54AS396982 Google LLCUSDTLS12026-10-11 02:08
147.185.132.90AS396982 Google LLCUSDTLS12026-10-07 04:29
205.210.31.64AS396982 Google LLCUSDTLS12026-10-10 10:31
147.185.132.156AS396982 Google LLCUSDTLS12026-10-05 22:24

Latest datagrams