Port 389 Details
known port assignments and vulnerabilities
5 records found
||LDAP (Lightweight Directory Access Protocol) - an Internet protocol, used my MS Active Directory,as well as some email programs to look up contact information from a server.
Both Microsoft Exchange and NetMeeting install a LDAP server on this port.
IBM Lotus Domino Server 7.0 allows remote attackers to cause a denial of service (segmentation fault) via a crafted packet to the LDAP port (389/TCP).
References: [CVE-2006-0580], [BID-16523]
Rockliffe MailSite 7.0 and earlier allows remote attackers to cause a denial of service by sending crafted LDAP packets to port 389/TCP, as demonstrated by the ProtoVer LDAP testsuite.
References: [CVE-2006-0790] [BID-16675] [SECUNIA-18888]
||Lightweight Directory Access Protocol (LDAP) (official)
||Lightweight Directory Access Protocol
||NetMeeting 2.0 through 3.01 (can also use ports 1024-65535 udp)
||Microsoft NetMeeting ILS server default port (for versions older than w2k)
Related ports: 522 636 1002 29831
« back to SG Ports
SANS Internet Storm Center: port 389
Well Known Ports: 0 through 1023.
Registered Ports: 1024 through 49151.
Dynamic/Private : 49152 through 65535.
TCP ports use the Transmission Control Protocol. TCP is the most commonly used protocol
on the Internet and any TCP/IP network. Whereas the IP protocol deals only with packets, TCP enables two hosts
to establish a connection and exchange streams of data. TCP guarantees delivery of data
and that packets will be delivered in the same order in which they were sent.
Guaranteed communication/delivery is the key difference between TCP and UDP.
UDP ports use the Datagram Protocol, a communications protocol for the Internet network,
transport, and session layers. Like TCP (Transmission Control Protocol),
UDP is used with IP (the Internet Protocol) and makes possible the transmission of datagrams
from one computer to applications on another computer, but unlike TCP, UDP is connectionless
and does not guarantee reliable communication; it's up to the application that received
the message to process any errors and verify correct delivery. UDP is often used with time-sensitive
applications, such as audio/video streaming, where dropping some packets is preferable to waiting for delayed data.
When troubleshooting unknown open ports, it is useful to find exactly what services/processes are listening to them.
This can be accomplished in both Windows command prompt and Linux variants using the "netstat -aon" command.
We also recommend runnig multiple anti-virus/anti-malware scans to rule out the possibility of active malicious software.
For more detailed and personalized help please use our forums.
Please use the "Add Comment" button below to provide additional information or comments about port 389.