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// Other services

Port 6315: Sensor Control Unit Protocol

Port 6315 is assigned by IANA to scup (Sensor Control Unit Protocol), scup-disc (Sensor Control Unit Protocol Discovery Protocol).

6315

How scup works

Other services
client:6315scupresponse client:6315scupresponse

The client sends a request to port 6315 and the scup service answers.

Transport
TCP · UDP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned2 registered services
Range
Registered (1024-49151)
Category
Other services
01 Security

Is port 6315 dangerous?

We have no specific security note for port 6315. 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 6315

ServicePortTransportDescriptionReferenceUpdated
scup 6315 TCP Sensor Control Unit Protocol - 2010-09-01
scup-disc 6315 UDP Sensor Control Unit Protocol Discovery Protocol - 2010-09-01

// source: IANA service name and port number registry

03 Check it

Which program uses port 6315, and is it reachable?

Linux

sudo ss -ltnup 'sport = :6315'      # process listening on 6315
sudo lsof -nP -i :6315

macOS

sudo lsof -nP -i :6315

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 6315 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 6315
netstat -ano | findstr :6315

From another machine

nmap -p 6315 -sV <host>
sudo nmap -sU -p 6315 <host>
nc -zv <host> 6315

Block it in the firewall

sudo ufw deny 6315/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 6315" -Direction Inbound -LocalPort 6315 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 6315 used for?

Port 6315 is assigned by IANA to scup (Sensor Control Unit Protocol), scup-disc (Sensor Control Unit Protocol Discovery Protocol).

Is port 6315 TCP or UDP?

Port 6315 is registered for TCP and UDP.

Is it safe to open port 6315?

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 6315 is open?

On Linux run "ss -ltnup 'sport = :6315'", on macOS "lsof -nP -i :6315", and on Windows "netstat -ano | findstr :6315" to see the local process. From another machine, "nmap -p 6315 <host>" shows whether it is reachable.

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