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// Other services

Port 2946: FJSVmpor

Port 2946 is assigned by IANA to fjsvmpor (FJSVmpor).

2946

How fjsvmpor works

Other services
client:2946fjsvmporresponse client:2946fjsvmporresponse

The client sends a request to port 2946 and the fjsvmpor 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 2946 dangerous?

We have no specific security note for port 2946. 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 2946

ServicePortTransportDescriptionReferenceUpdated
fjsvmpor 2946 TCP, UDP FJSVmpor - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2946, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2946'      # process listening on 2946
sudo lsof -nP -i :2946

macOS

sudo lsof -nP -i :2946

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2946 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2946
netstat -ano | findstr :2946

From another machine

nmap -p 2946 -sV <host>
sudo nmap -sU -p 2946 <host>
nc -zv <host> 2946

Block it in the firewall

sudo ufw deny 2946/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2946" -Direction Inbound -LocalPort 2946 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2946 used for?

Port 2946 is assigned by IANA to fjsvmpor (FJSVmpor).

Is port 2946 TCP or UDP?

Port 2946 is registered for TCP and UDP.

Is it safe to open port 2946?

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 2946 is open?

On Linux run "ss -ltnup 'sport = :2946'", on macOS "lsof -nP -i :2946", and on Windows "netstat -ano | findstr :2946" to see the local process. From another machine, "nmap -p 2946 <host>" shows whether it is reachable.

05 Related
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