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// Other services

Port 6201: Management of service nodes in a processing grid for thermodynamic calculations

Port 6201 is assigned by IANA to thermo-calc (Management of service nodes in a processing grid for thermodynamic calculations).

6201

How thermo-calc works

Other services
client:6201thermo-calcresponse client:6201thermo-calcresponse

The client sends a request to port 6201 and the thermo-calc service answers.

Transport
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 6201 dangerous?

We have no specific security note for port 6201. 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 6201

ServicePortTransportDescriptionReferenceUpdated
thermo-calc 6201 UDP Management of service nodes in a processing grid for thermodynamic calculations - 2012-06-28
-6201-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 6201, and is it reachable?

Linux

sudo ss -ltnup 'sport = :6201'      # process listening on 6201
sudo lsof -nP -i :6201

macOS

sudo lsof -nP -i :6201

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 6201 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 6201
netstat -ano | findstr :6201

From another machine

nmap -p 6201 -sV <host>
sudo nmap -sU -p 6201 <host>
nc -zv <host> 6201

Block it in the firewall

sudo ufw deny 6201/udp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 6201" -Direction Inbound -LocalPort 6201 -Protocol UDP -Action Block  # Windows
04 FAQ
What is port 6201 used for?

Port 6201 is assigned by IANA to thermo-calc (Management of service nodes in a processing grid for thermodynamic calculations).

Is port 6201 TCP or UDP?

Port 6201 is registered for UDP.

Is it safe to open port 6201?

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 6201 is open?

On Linux run "ss -ltnup 'sport = :6201'", on macOS "lsof -nP -i :6201", and on Windows "netstat -ano | findstr :6201" to see the local process. From another machine, "nmap -p 6201 <host>" shows whether it is reachable.

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