CyberHunter
Local dataset, no network
// Other services

Port 2969: ESSP

Port 2969 is assigned by IANA to essp (ESSP).

2969

How essp works

Other services
client:2969esspresponse client:2969esspresponse

The client sends a request to port 2969 and the essp 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 2969 dangerous?

We have no specific security note for port 2969. 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 2969

ServicePortTransportDescriptionReferenceUpdated
essp 2969 TCP, UDP ESSP - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2969, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2969'      # process listening on 2969
sudo lsof -nP -i :2969

macOS

sudo lsof -nP -i :2969

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2969 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2969
netstat -ano | findstr :2969

From another machine

nmap -p 2969 -sV <host>
sudo nmap -sU -p 2969 <host>
nc -zv <host> 2969

Block it in the firewall

sudo ufw deny 2969/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2969" -Direction Inbound -LocalPort 2969 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2969 used for?

Port 2969 is assigned by IANA to essp (ESSP).

Is port 2969 TCP or UDP?

Port 2969 is registered for TCP and UDP.

Is it safe to open port 2969?

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 2969 is open?

On Linux run "ss -ltnup 'sport = :2969'", on macOS "lsof -nP -i :2969", and on Windows "netstat -ano | findstr :2969" to see the local process. From another machine, "nmap -p 2969 <host>" shows whether it is reachable.

05 Related
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