CyberHunter
Local dataset, no network
// Other services

Port 2389: OpenView Session Mgr

Port 2389 is assigned by IANA to ovsessionmgr (OpenView Session Mgr).

2389

How ovsessionmgr works

Other services
client:2389ovsessionmgrresponse client:2389ovsessionmgrresponse

The client sends a request to port 2389 and the ovsessionmgr service answers.

Transport
TCP · UDP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned1 registered service
Range
Registered (1024-49151)
Category
Other services
01 Security

Is port 2389 dangerous?

We have no specific security note for port 2389. Its risk depends on the program actually listening on it. General advice for other services services:

  • Close the port if nothing on the host needs it.
  • Identify the process that listens on it (commands below) before opening it in a firewall.
  • Expose a service only to the networks that use it.
02 Registry

IANA registry entries for port 2389

ServicePortTransportDescriptionReferenceUpdated
ovsessionmgr 2389 TCP, UDP OpenView Session Mgr - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2389, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2389'      # process listening on 2389
sudo lsof -nP -i :2389

macOS

sudo lsof -nP -i :2389

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2389 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2389
netstat -ano | findstr :2389

From another machine

nmap -p 2389 -sV <host>
sudo nmap -sU -p 2389 <host>
nc -zv <host> 2389

Block it in the firewall

sudo ufw deny 2389/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2389" -Direction Inbound -LocalPort 2389 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2389 used for?

Port 2389 is assigned by IANA to ovsessionmgr (OpenView Session Mgr).

Is port 2389 TCP or UDP?

Port 2389 is registered for TCP and UDP.

Is it safe to open port 2389?

It depends on the program that listens on it. Open it only for a service you know and only to the networks that need it. Close the port if nothing on the host needs it.

How do I check if port 2389 is open?

On Linux run "ss -ltnup 'sport = :2389'", on macOS "lsof -nP -i :2389", and on Windows "netstat -ano | findstr :2389" to see the local process. From another machine, "nmap -p 2389 <host>" shows whether it is reachable.

05 Related
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