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// Other services

Port 6963: swismgr1

Port 6963 is assigned by IANA to swismgr1 (swismgr1).

6963

How swismgr1 works

Other services
client:6963swismgr1response client:6963swismgr1response

The client sends a request to port 6963 and the swismgr1 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 6963 dangerous?

We have no specific security note for port 6963. 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 6963

ServicePortTransportDescriptionReferenceUpdated
swismgr1 6963 TCP, UDP swismgr1 - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 6963, and is it reachable?

Linux

sudo ss -ltnup 'sport = :6963'      # process listening on 6963
sudo lsof -nP -i :6963

macOS

sudo lsof -nP -i :6963

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 6963 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 6963
netstat -ano | findstr :6963

From another machine

nmap -p 6963 -sV <host>
sudo nmap -sU -p 6963 <host>
nc -zv <host> 6963

Block it in the firewall

sudo ufw deny 6963/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 6963" -Direction Inbound -LocalPort 6963 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 6963 used for?

Port 6963 is assigned by IANA to swismgr1 (swismgr1).

Is port 6963 TCP or UDP?

Port 6963 is registered for TCP and UDP.

Is it safe to open port 6963?

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 6963 is open?

On Linux run "ss -ltnup 'sport = :6963'", on macOS "lsof -nP -i :6963", and on Windows "netstat -ano | findstr :6963" to see the local process. From another machine, "nmap -p 6963 <host>" shows whether it is reachable.

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