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UDP traffic

Datagrams matching qname:"dnsscan.shadowserver.org" 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

21

Datagrams

19

Source addresses

1

Networks

1

Countries

1

Destination ports

Traffic by type

Service queries

21 datagrams from 19 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 21

Latest DNS datagram, to 53/udp

DNS query A dnsscan.shadowserver.org

payload bytes
00000000  fa ce 01 00 00 01 00 00  00 00 00 00 07 64 6e 73  |.............dns|
00000010  73 63 61 6e 0c 73 68 61  64 6f 77 73 65 72 76 65  |scan.shadowserve|
00000020  72 03 6f 72 67 00 00 01  00 01                    |r.org.....|

Amplification checks

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

ServicePortDatagramsSourcesFactor
DNS53/udp211928 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)
64.62.156.18AS6939 Hurricane Electric LLCUSDNS22026-10-07 02:42
184.105.139.94AS6939 Hurricane Electric LLCUSDNS22026-10-09 04:48
184.105.247.222AS6939 Hurricane Electric LLCUSDNS12026-10-08 01:05
64.62.156.31AS6939 Hurricane Electric LLCUSDNS12026-10-09 07:19
64.62.197.39AS6939 Hurricane Electric LLCUSDNS12026-10-10 07:18
65.49.1.72AS6939 Hurricane Electric LLCUSDNS12026-10-08 03:10
64.62.197.42AS6939 Hurricane Electric LLCUSDNS12026-10-09 07:37
64.62.156.22AS6939 Hurricane Electric LLCUSDNS12026-10-06 06:17
74.82.47.25AS6939 Hurricane Electric LLCUSDNS12026-10-06 00:12
65.49.20.88AS6939 Hurricane Electric LLCUSDNS12026-10-10 08:04
64.62.197.165AS6939 Hurricane Electric LLCUSDNS12026-10-10 07:30
184.105.139.106AS6939 Hurricane Electric LLCUSDNS12026-10-09 04:23
65.49.20.84AS6939 Hurricane Electric LLCUSDNS12026-10-10 07:52
184.105.247.206AS6939 Hurricane Electric LLCUSDNS12026-10-08 01:13
64.62.156.77AS6939 Hurricane Electric LLCUSDNS12026-10-07 07:32
64.62.156.13AS6939 Hurricane Electric LLCUSDNS12026-10-06 05:47
65.49.1.71AS6939 Hurricane Electric LLCUSDNS12026-10-11 01:32
184.105.139.90AS6939 Hurricane Electric LLCUSDNS12026-10-07 02:36
64.62.156.117AS6939 Hurricane Electric LLCUSDNS12026-10-08 07:20

Latest datagrams