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// Other services

Port 6966: swispol

Port 6966 is assigned by IANA to swispol (swispol).

6966

How swispol works

Other services
client:6966swispolresponse client:6966swispolresponse

The client sends a request to port 6966 and the swispol 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
Registered (1024-49151)
Category
Other services
01 Security

Is port 6966 dangerous?

We have no specific security note for port 6966. 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 6966

ServicePortTransportDescriptionReferenceUpdated
swispol 6966 TCP, UDP swispol - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 6966, and is it reachable?

Linux

sudo ss -ltnup 'sport = :6966'      # process listening on 6966
sudo lsof -nP -i :6966

macOS

sudo lsof -nP -i :6966

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 6966 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 6966
netstat -ano | findstr :6966

From another machine

nmap -p 6966 -sV <host>
sudo nmap -sU -p 6966 <host>
nc -zv <host> 6966

Block it in the firewall

sudo ufw deny 6966/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 6966" -Direction Inbound -LocalPort 6966 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 6966 used for?

Port 6966 is assigned by IANA to swispol (swispol).

Is port 6966 TCP or UDP?

Port 6966 is registered for TCP and UDP.

Is it safe to open port 6966?

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 6966 is open?

On Linux run "ss -ltnup 'sport = :6966'", on macOS "lsof -nP -i :6966", and on Windows "netstat -ano | findstr :6966" to see the local process. From another machine, "nmap -p 6966 <host>" shows whether it is reachable.

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