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// Other services

Port 2686: mpnjsomg

Port 2686 is assigned by IANA to mpnjsomg (mpnjsomg).

2686

How mpnjsomg works

Other services
client:2686mpnjsomgresponse client:2686mpnjsomgresponse

The client sends a request to port 2686 and the mpnjsomg 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 2686 dangerous?

We have no specific security note for port 2686. 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 2686

ServicePortTransportDescriptionReferenceUpdated
mpnjsomg 2686 TCP, UDP mpnjsomg - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2686, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2686'      # process listening on 2686
sudo lsof -nP -i :2686

macOS

sudo lsof -nP -i :2686

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2686 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2686
netstat -ano | findstr :2686

From another machine

nmap -p 2686 -sV <host>
sudo nmap -sU -p 2686 <host>
nc -zv <host> 2686

Block it in the firewall

sudo ufw deny 2686/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2686" -Direction Inbound -LocalPort 2686 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2686 used for?

Port 2686 is assigned by IANA to mpnjsomg (mpnjsomg).

Is port 2686 TCP or UDP?

Port 2686 is registered for TCP and UDP.

Is it safe to open port 2686?

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 2686 is open?

On Linux run "ss -ltnup 'sport = :2686'", on macOS "lsof -nP -i :2686", and on Windows "netstat -ano | findstr :2686" to see the local process. From another machine, "nmap -p 2686 <host>" shows whether it is reachable.

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