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UDP traffic

Datagrams matching proto:ldap 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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104

Datagrams

70

Source addresses

16

Networks

11

Countries

20

Destination ports

Traffic by type

Service queries

104 datagrams from 70 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.

CLDAP 104

Latest CLDAP datagram, to 389/udp

0·-·c·$· · ·d·objectClass0·

payload bytes
00000000  30 84 00 00 00 2d 02 01  07 63 84 00 00 00 24 04  |0....-...c....$.|
00000010  00 0a 01 00 0a 01 00 02  01 00 02 01 64 01 01 00  |............d...|
00000020  87 0b 6f 62 6a 65 63 74  43 6c 61 73 73 30 84 00  |..objectClass0..|
00000030  00 00 00                                          |...|

Amplification checks

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

ServicePortDatagramsSourcesFactor
CLDAP389/udp +31047056 to 70

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

Networks

Countries

Source addresses (unverified)

AddressNetworkCcSendsDatagramsLast seen (UTC)
66.132.172.248AS398324 Censys, Inc.USCLDAP192026-10-12 04:25
147.203.255.20AS11320 LightEdge SolutionsUSCLDAP42026-10-08 09:34
172.105.22.202AS63949 Akamai Connected CloudCACLDAP42026-10-08 17:56
45.9.156.183AS211619 MAXKO d.o.o.BGCLDAP32026-10-11 21:03
146.88.241.70AS20052 Arbor Networks, Inc.USCLDAP22026-10-11 07:57
65.49.20.74AS6939 Hurricane Electric LLCUSCLDAP22026-10-12 04:42
146.88.241.80AS20052 Arbor Networks, Inc.USCLDAP22026-10-07 16:02
206.189.14.75AS14061 DigitalOcean, LLCNLCLDAP22026-10-07 00:19
137.184.210.250AS14061 DigitalOcean, LLCUSCLDAP22026-10-05 13:49
91.230.168.222AS213412 ONYPHE SASUSCLDAP22026-10-10 16:35
157.230.83.56AS14061 DigitalOcean, LLCUSCLDAP22026-10-09 17:23
185.191.236.38AS264617 GRUPO PANAGLOBAL 15 S.ACHCLDAP22026-10-06 16:30
91.231.89.88AS213412 ONYPHE SASFRCLDAP12026-10-10 14:00
64.62.156.78AS6939 Hurricane Electric LLCUSCLDAP12026-10-08 04:09
184.105.139.86AS6939 Hurricane Electric LLCUSCLDAP12026-10-08 06:43
71.6.233.2AS10439 CariNet, Inc.USCLDAP12026-10-06 15:50
65.49.1.102AS6939 Hurricane Electric LLCUSCLDAP12026-10-10 07:38
64.62.156.31AS6939 Hurricane Electric LLCUSCLDAP12026-10-09 02:40
146.88.241.20AS20052 Arbor Networks, Inc.USCLDAP12026-10-11 11:23
109.105.210.62AS21859 Zenlayer IncPTCLDAP12026-10-09 08:12

Latest datagrams