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// Other services

Port 9343: MpIdcMgr

Port 9343 is assigned by IANA to mpidcmgr (MpIdcMgr).

9343

How mpidcmgr works

Other services
client:9343mpidcmgrresponse client:9343mpidcmgrresponse

The client sends a request to port 9343 and the mpidcmgr 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 9343 dangerous?

We have no specific security note for port 9343. 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 9343

ServicePortTransportDescriptionReferenceUpdated
mpidcmgr 9343 TCP, UDP MpIdcMgr - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 9343, and is it reachable?

Linux

sudo ss -ltnup 'sport = :9343'      # process listening on 9343
sudo lsof -nP -i :9343

macOS

sudo lsof -nP -i :9343

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 9343 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 9343
netstat -ano | findstr :9343

From another machine

nmap -p 9343 -sV <host>
sudo nmap -sU -p 9343 <host>
nc -zv <host> 9343

Block it in the firewall

sudo ufw deny 9343/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 9343" -Direction Inbound -LocalPort 9343 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 9343 used for?

Port 9343 is assigned by IANA to mpidcmgr (MpIdcMgr).

Is port 9343 TCP or UDP?

Port 9343 is registered for TCP and UDP.

Is it safe to open port 9343?

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 9343 is open?

On Linux run "ss -ltnup 'sport = :9343'", on macOS "lsof -nP -i :9343", and on Windows "netstat -ano | findstr :9343" to see the local process. From another machine, "nmap -p 9343 <host>" shows whether it is reachable.

05 Related
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