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UDP traffic

Datagrams matching proto:ldap 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.

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13

Datagrams

12

Source addresses

5

Networks

2

Countries

2

Destination ports

Traffic by type

Service queries

13 datagrams from 12 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 13

Latest CLDAP datagram, to 389/udp

0·-·c·$· · ·objectclass0·

payload bytes
00000000  30 84 00 00 00 2d 02 01  01 63 84 00 00 00 24 04  |0....-...c....$.|
00000010  00 0a 01 00 0a 01 00 02  01 00 02 01 00 01 01 00  |................|
00000020  87 0b 6f 62 6a 65 63 74  63 6c 61 73 73 30 84 00  |..objectclass0..|
00000030  00 00 00 00 0a                                    |.....|

Amplification checks

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

ServicePortDatagramsSourcesFactor
CLDAP389/udp +1131256 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)
146.88.241.70AS20052 Arbor Networks, Inc.USCLDAP22026-10-11 07:57
64.62.156.26AS6939 Hurricane Electric LLCUSCLDAP12026-10-11 07:45
65.49.20.74AS6939 Hurricane Electric LLCUSCLDAP12026-10-11 05:53
66.132.172.248AS398324 Censys, Inc.USCLDAP12026-10-10 16:01
91.230.168.222AS213412 ONYPHE SASUSCLDAP12026-10-10 16:35
66.132.186.249AS398324 Censys, Inc.USCLDAP12026-10-10 12:05
91.230.168.216AS213412 ONYPHE SASUSCLDAP12026-10-10 13:45
91.231.89.88AS213412 ONYPHE SASFRCLDAP12026-10-10 14:00
146.88.241.60AS20052 Arbor Networks, Inc.USCLDAP12026-10-11 09:31
71.6.135.131AS10439 CariNet, Inc.USCLDAP12026-10-10 17:59
64.62.156.120AS6939 Hurricane Electric LLCUSCLDAP12026-10-11 06:06
65.49.20.102AS6939 Hurricane Electric LLCUSCLDAP12026-10-11 05:50

Latest datagrams