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// Other services

Port 38422: Xn Control Plane (3GPP)

Port 38422 is assigned by IANA to xn-control (Xn Control Plane (3GPP)).

38422

How xn-control works

Other services
client:38422xn-controlresponse client:38422xn-controlresponse

The client sends a request to port 38422 and the xn-control service answers.

Transport
SCTP
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 38422 dangerous?

We have no specific security note for port 38422. 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 38422

ServicePortTransportDescriptionReferenceUpdated
xn-control 38422 SCTP Xn Control Plane (3GPP) - 2017-05-19
-38422-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 38422, and is it reachable?

Linux

sudo ss -ltnup 'sport = :38422'      # process listening on 38422
sudo lsof -nP -i :38422

macOS

sudo lsof -nP -i :38422

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 38422 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 38422
netstat -ano | findstr :38422

From another machine

nmap -p 38422 -sV <host>
nc -zv <host> 38422

Block it in the firewall

sudo ufw deny 38422/sctp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 38422" -Direction Inbound -LocalPort 38422 -Protocol SCTP -Action Block  # Windows
04 FAQ
What is port 38422 used for?

Port 38422 is assigned by IANA to xn-control (Xn Control Plane (3GPP)).

Is port 38422 TCP or UDP?

Port 38422 is registered for SCTP.

Is it safe to open port 38422?

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 38422 is open?

On Linux run "ss -ltnup 'sport = :38422'", on macOS "lsof -nP -i :38422", and on Windows "netstat -ano | findstr :38422" to see the local process. From another machine, "nmap -p 38422 <host>" shows whether it is reachable.

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