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UDP traffic

Datagrams sent to HoneyLabs sensors over UDP in the last 24 hours. 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.

4.3K

Datagrams

1.2K

Source addresses

233

Networks

57

Countries

819

Destination ports

Traffic by type

Service queries

615 datagrams from 257 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 188 SNMP 126 NTP 79 SSDP 65 NetBIOS 52 CoAP 28 TFTP 28 Sun RPC 25 CLDAP 10 SOAP 10

Latest DNS datagram, to 53/udp

DNS query TXT/CH VERSION.BIND

payload bytes
00000000  34 ef 01 00 00 01 00 00  00 00 00 00 07 56 45 52  |4............VER|
00000010  53 49 4f 4e 04 42 49 4e  44 00 00 10 00 03        |SION.BIND.....|

Other services

1,351 datagrams from 318 sources

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

SIP 880 STUN 156 DTLS 134 SOCKS5 74 Redis 48 XDMCP 9 GTP-U 8 GTP-C 7 RTSP 6 HTTP 5

Latest SIP datagram, to 5060/udp

INVITE sip:+48525223031@<HONEYPOT> SIP/2.0 Via: SIP/2.0/UDP 77.110.115.168:52431;branch=z9hG4bK2078030923 Max-Forwards: 70 From: <sip:2001@<HONEYPOT>>;tag=400786037 To: <sip:+48525223031@<HONEYPOT>> Call-ID: 935521565-549923281-812904971 CSeq: 1 INVITE Contact: <sip:2001@77.110.115.168:52431>

Payload bytes withheld: they contain the sensor's address.

QUIC

19 datagrams from 19 sources

Initial packets of HTTP/3 connections, decoded on the sensor.

QUIC 19

Latest QUIC datagram, to 443/udp

QUIC v1 Initial alpn=http/0.9,http/1.0,spdy/1,spdy/2,spdy/3,stun.turn,stun.nat-discovery,h2c,webrtc,c-webrtc,ftp,imap,pop3,managesieve,coap,co

Unrecognised

2,335 datagrams from 781 sources

Datagrams no decoder recognised. Their first bytes are kept.

Unrecognised 2,335

Latest Unrecognised datagram, to 389/udp

0%·c · · ·objectclass0·

payload bytes
00000000  30 25 02 01 01 63 20 04  00 0a 01 00 0a 01 00 02  |0%...c .........|
00000010  01 00 02 01 00 01 01 00  87 0b 6f 62 6a 65 63 74  |..........object|
00000020  63 6c 61 73 73 30 00                              |class0.|

Peer-to-peer

11,007 datagrams from 310 sources

File-sharing clients trying to reach a peer that used one of these addresses before. This is not scanning, so it is left out of every other figure on this page.

BitTorrent 11,007

Amplification checks

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

ServicePortDatagramsSourcesFactor
DNS53/udp +31686228 to 54
SNMPv2161/udp +1129556.3
NTP123/udp7948556.9
SSDP1900/udp +3743930.8
NetBIOS137/udp +352333.8
mDNS5353/udp31252 to 10
Memcached11211/udp +1332310,000 to 51,000
WS-Discovery3702/udp451710 to 500
TFTP69/udp +3281560
Portmap111/udp24137 to 28
CLDAP389/udp +2261256 to 70
CharGEN19/udp158358.8
QOTD17/udp76140.3
RIPv1520/udp44131.24

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

QUIC clients (JA4)

QUIC transport parameters

QUIC versions

Networks

Countries

Source addresses (unverified)

AddressNetworkCcSendsDatagramsLast seen (UTC)
77.110.115.168AS203273 NetCrafters OUUSSIP2982026-10-11 03:25
172.110.223.179AS23470 ReliableSite.Net LLCHKSIP1642026-10-11 03:21
117.3.123.242AS7552 Viettel GroupVNUnrecognised1432026-10-11 01:49
27.68.152.94AS7552 Viettel GroupVNUnrecognised1202026-10-10 14:15
27.66.49.95AS7552 Viettel GroupVNUnrecognised892026-10-10 14:12
27.67.72.112AS7552 Viettel GroupVNUnrecognised802026-10-10 13:56
46.101.133.66AS14061 DigitalOcean, LLCDEUnrecognised672026-10-10 20:31
125.235.172.252AS7552 Viettel GroupVNUnrecognised582026-10-10 23:46
116.110.224.132AS7552 Viettel GroupVNUnrecognised552026-10-11 01:28
141.98.83.48AS209588 Flyservers S.A.PAUnrecognised552026-10-11 03:21
117.3.120.162AS7552 Viettel GroupVNUnrecognised512026-10-11 03:20
45.198.224.251AS215925 Vpsvault.host LtdUSSNMP492026-10-11 03:20
45.205.1.231AS215925 Vpsvault.host LtdBRUnrecognised482026-10-11 03:13
171.244.211.211AS7552 Viettel GroupVNUnrecognised472026-10-11 01:57
151.243.11.230AS209630 LLC Vash Kredit BankAESNMP462026-10-11 02:38
172.110.223.192AS23470 ReliableSite.Net LLCHKSIP442026-10-10 23:43
104.28.210.247AS13335 Cloudflare, Inc.VNUnrecognised402026-10-10 09:46
171.254.139.104AS7552 Viettel GroupVNUnrecognised402026-10-11 02:39
160.119.76.127AS49870 Alsycon B.V.SCSIP402026-10-10 22:30
116.110.224.176AS7552 Viettel GroupVNSTUN402026-10-10 12:44

Latest datagrams