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UDP traffic

Datagrams matching port:5351 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.

Clear search

Your plan searches up to 7d, so 30d was shortened. Plans

121

Datagrams

94

Source addresses

12

Networks

7

Countries

1

Destination ports

Traffic by type

Service queries

6 datagrams from 5 sources

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 4 TFTP 2

Latest DNS datagram, to 5351/udp

DNS query PTR _services._dns-sd._udp.local

payload bytes
00000000  00 00 00 00 00 01 00 00  00 00 00 00 09 5f 73 65  |............._se|
00000010  72 76 69 63 65 73 07 5f  64 6e 73 2d 73 64 04 5f  |rvices._dns-sd._|
00000020  75 64 70 05 6c 6f 63 61  6c 00 00 0c 00 01        |udp.local.....|

Unrecognised

115 datagrams from 90 sources

Datagrams no decoder recognised. Their first bytes are kept.

Unrecognised 115

Latest Unrecognised datagram, to 5351/udp

·

payload bytes
00000000  00 00                                             |..|

Amplification checks

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

ServicePortDatagramsSourcesFactor
DNS5351/udp4428 to 54
TFTP5351/udp2160

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)
185.217.1.242AS42237 w1n ltdSEUnrecognised82026-10-10 03:16
31.170.22.206AS43513 Sia Nano ITLVUnrecognised82026-10-11 00:54
16.5.0.234AS401661 EMBNEX, LLCBRUnrecognised52026-10-05 18:27
139.162.186.195AS63949 Akamai Connected CloudDEUnrecognised32026-10-10 21:54
47.254.154.232AS45102 Alibaba (US) Technology Co., Ltd.DETFTP32026-10-09 23:45
91.230.168.117AS213412 ONYPHE SASUSUnrecognised22026-10-09 19:23
165.154.163.10AS135377 UCLOUD INFORMATION TECHNOLOGY (HK) LIMITUSUnrecognised22026-10-07 19:01
91.231.89.165AS213412 ONYPHE SASFRUnrecognised22026-10-09 19:38
65.49.1.79AS6939 Hurricane Electric LLCUSUnrecognised22026-10-08 02:18
147.185.132.70AS396982 Google LLCUSUnrecognised22026-10-09 08:00
91.231.89.95AS213412 ONYPHE SASFRUnrecognised12026-10-07 01:29
64.62.156.13AS6939 Hurricane Electric LLCUSUnrecognised12026-10-09 02:13
216.25.89.125AS396982 Google LLCUSUnrecognised12026-10-10 22:21
65.49.1.15AS6939 Hurricane Electric LLCUSUnrecognised12026-10-09 05:44
91.230.168.223AS213412 ONYPHE SASUSUnrecognised12026-10-07 01:22
205.210.31.234AS396982 Google LLCUSUnrecognised12026-10-10 03:34
71.6.233.2AS10439 CariNet, Inc.USUnrecognised12026-10-06 03:38
64.62.197.4AS6939 Hurricane Electric LLCUSUnrecognised12026-10-07 08:25
64.62.197.120AS6939 Hurricane Electric LLCUSUnrecognised12026-10-10 03:00
64.62.197.202AS6939 Hurricane Electric LLCUSUnrecognised12026-10-11 03:45

Latest datagrams