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// Other services

Port 22351: TPC/IP requests of copy protection software to a server

Port 22351 is assigned by IANA to codemeter-cmwan (TPC/IP requests of copy protection software to a server).

22351

How codemeter-cmwan works

Other services
client:22351codemeter-cmwanresponse client:22351codemeter-cmwanresponse

The client sends a request to port 22351 and the codemeter-cmwan service answers.

Transport
TCP
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 22351 dangerous?

We have no specific security note for port 22351. 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 22351

ServicePortTransportDescriptionReferenceUpdated
codemeter-cmwan 22351 TCP TPC/IP requests of copy protection software to a server - 2013-06-25
-22351-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 22351, and is it reachable?

Linux

sudo ss -ltnup 'sport = :22351'      # process listening on 22351
sudo lsof -nP -i :22351

macOS

sudo lsof -nP -i :22351

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 22351 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 22351
netstat -ano | findstr :22351

From another machine

nmap -p 22351 -sV <host>
nc -zv <host> 22351

Block it in the firewall

sudo ufw deny 22351/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 22351" -Direction Inbound -LocalPort 22351 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 22351 used for?

Port 22351 is assigned by IANA to codemeter-cmwan (TPC/IP requests of copy protection software to a server).

Is port 22351 TCP or UDP?

Port 22351 is registered for TCP.

Is it safe to open port 22351?

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 22351 is open?

On Linux run "ss -ltnup 'sport = :22351'", on macOS "lsof -nP -i :22351", and on Windows "netstat -ano | findstr :22351" to see the local process. From another machine, "nmap -p 22351 <host>" shows whether it is reachable.

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