TCP 389

Looking for information on Protocol TCP 389? This page will attempt to provide you with as much port information as possible on TCP Port 389.

TCP Port 389 may use a defined protocol to communicate depending on the application. A protocol is a set of formalized rules that explains how data is communicated over a network. Think of it as the language spoken between computers to help them communicate more efficiently.

Protocol HTTP for example defines the format for communication between internet browsers and web sites. Another example is the IMAP protocol that defines the communication between IMAP email servers and clients or finally, the SSL protocol which states the format to use for encrypted communications.

TCP Port 389

Here is what we know about protocol TCP Port 389. If you have information on TCP port 389 that is not reflected on this page, simply leave a comment and we’ll update our information.

PORT 389 – Information

• Port Number: 389
• TCP / UDP: TCP
• Delivery: Yes
• Protocol / Name: ldap
• Port Description: Lightweight Directory Access Protocol. LDAP server’s port, an adaptation of x.500 dir std. Through it, LDAP clients access central dir to retrieve, add, and modify info. Examples: Database for PKI systems. – Address book for mail & personnel progs. – Internet Directory Service that tracks users of collaborative apps (chat, video, audio, etc). Would track who is on-line, their IP, and data about user. Used by Win2000 Active Directory. SSL version at TCP 636. Security Concerns: Valuable source of user info used in attacks; excellent target for DOS attack.
• Virus / Trojan: No

  Tip! Use our free Digital Footprint and Firewall Test to help verify you are not infected.

Side note: TCP port 389 uses the Transmission Control Protocol. TCP is one of the main protocols in TCP/IP networks. 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 also guarantees that packets will be delivered on port 389 in the same order in which they were sent. Guaranteed communication over port 389 is the key difference between TCP and UDP. UDP port 389 would not have guaranteed communication in the same way as TCP.

Because protocol TCP port 389 was flagged as a virus (colored red) does not mean that a virus is using port 389, but that a Trojan or Virus has used this port in the past to communicate.

TCP 389 – Disclaimer

We do our best to provide you with accurate information on PORT 389 and work hard to keep our database up to date. This is a free service and accuracy is not guaranteed. We do our best to correct any errors and welcome feedback!