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Local dataset, no network
// Other services

Port 5197: Tunstall Lone worker device interface

Port 5197 is assigned by IANA to tunstall-lwp (Tunstall Lone worker device interface).

5197

How tunstall-lwp works

Other services
client:5197tunstall-lwpresponse client:5197tunstall-lwpresponse

The client sends a request to port 5197 and the tunstall-lwp service answers.

Transport
TCP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned1 registered service
Range
Registered (1024-49151)
01 Security

Is port 5197 dangerous?

We have no specific security note for port 5197. 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 5197

ServicePortTransportDescriptionReferenceUpdated
tunstall-lwp 5197 TCP Tunstall Lone worker device interface - 2014-12-10
-5197-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 5197, and is it reachable?

Linux

sudo ss -ltnup 'sport = :5197'      # process listening on 5197
sudo lsof -nP -i :5197

macOS

sudo lsof -nP -i :5197

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 5197 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 5197
netstat -ano | findstr :5197

From another machine

nmap -p 5197 -sV <host>
nc -zv <host> 5197

Block it in the firewall

sudo ufw deny 5197/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 5197" -Direction Inbound -LocalPort 5197 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 5197 used for?

Port 5197 is assigned by IANA to tunstall-lwp (Tunstall Lone worker device interface).

Is port 5197 TCP or UDP?

Port 5197 is registered for TCP.

Is it safe to open port 5197?

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 5197 is open?

On Linux run "ss -ltnup 'sport = :5197'", on macOS "lsof -nP -i :5197", and on Windows "netstat -ano | findstr :5197" to see the local process. From another machine, "nmap -p 5197 <host>" shows whether it is reachable.

05 Related

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