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// Other services

Port 670: VACDSM-SWS

Port 670 is assigned by IANA to vacdsm-sws (VACDSM-SWS).

670

How vacdsm-sws works

Other services
client:670vacdsm-swsresponse client:670vacdsm-swsresponse

The client sends a request to port 670 and the vacdsm-sws 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
Well-known (0-1023)
Category
Other services
01 Security

Is port 670 dangerous?

We have no specific security note for port 670. 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 670

ServicePortTransportDescriptionReferenceUpdated
vacdsm-sws 670 TCP, UDP VACDSM-SWS - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 670, and is it reachable?

Linux

sudo ss -ltnup 'sport = :670'      # process listening on 670
sudo lsof -nP -i :670

macOS

sudo lsof -nP -i :670

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 670 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 670
netstat -ano | findstr :670

From another machine

nmap -p 670 -sV <host>
sudo nmap -sU -p 670 <host>
nc -zv <host> 670

Block it in the firewall

sudo ufw deny 670/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 670" -Direction Inbound -LocalPort 670 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 670 used for?

Port 670 is assigned by IANA to vacdsm-sws (VACDSM-SWS).

Is port 670 TCP or UDP?

Port 670 is registered for TCP and UDP.

Is it safe to open port 670?

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 670 is open?

On Linux run "ss -ltnup 'sport = :670'", on macOS "lsof -nP -i :670", and on Windows "netstat -ano | findstr :670" to see the local process. From another machine, "nmap -p 670 <host>" shows whether it is reachable.

05 Related
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