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UDP traffic

Datagrams matching port:6353 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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3

Datagrams

3

Source addresses

1

Networks

2

Countries

1

Destination ports

Traffic by type

Service queries

3 datagrams from 3 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 3

Latest DNS datagram, to 6353/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.....|

Amplification checks

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

ServicePortDatagramsSourcesFactor
DNS6353/udp3328 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)
147.185.132.220AS396982 Google LLCUSDNS12026-10-09 13:13
162.216.149.27AS396982 Google LLCUSDNS12026-10-08 09:05
35.203.210.51AS396982 Google LLCGBDNS12026-10-10 08:53

Latest datagrams