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// Other services

Port 9397: MpIdcAgt

Port 9397 is assigned by IANA to mpidcagt (MpIdcAgt).

9397

How mpidcagt works

Other services
client:9397mpidcagtresponse client:9397mpidcagtresponse

The client sends a request to port 9397 and the mpidcagt 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 9397 dangerous?

We have no specific security note for port 9397. 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 9397

ServicePortTransportDescriptionReferenceUpdated
mpidcagt 9397 TCP, UDP MpIdcAgt - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 9397, and is it reachable?

Linux

sudo ss -ltnup 'sport = :9397'      # process listening on 9397
sudo lsof -nP -i :9397

macOS

sudo lsof -nP -i :9397

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 9397 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 9397
netstat -ano | findstr :9397

From another machine

nmap -p 9397 -sV <host>
sudo nmap -sU -p 9397 <host>
nc -zv <host> 9397

Block it in the firewall

sudo ufw deny 9397/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 9397" -Direction Inbound -LocalPort 9397 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 9397 used for?

Port 9397 is assigned by IANA to mpidcagt (MpIdcAgt).

Is port 9397 TCP or UDP?

Port 9397 is registered for TCP and UDP.

Is it safe to open port 9397?

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 9397 is open?

On Linux run "ss -ltnup 'sport = :9397'", on macOS "lsof -nP -i :9397", and on Windows "netstat -ano | findstr :9397" to see the local process. From another machine, "nmap -p 9397 <host>" shows whether it is reachable.

05 Related
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