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// Other services

Port 8191: Limner Pressure

Port 8191 is assigned by IANA to limnerpressure (Limner Pressure).

8191

How limnerpressure works

Other services
client:8191limnerpressureresponse client:8191limnerpressureresponse

The client sends a request to port 8191 and the limnerpressure 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)
Category
Other services
01 Security

Is port 8191 dangerous?

We have no specific security note for port 8191. 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 8191

ServicePortTransportDescriptionReferenceUpdated
limnerpressure 8191 TCP Limner Pressure - 2014-01-16
-8191-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 8191, and is it reachable?

Linux

sudo ss -ltnup 'sport = :8191'      # process listening on 8191
sudo lsof -nP -i :8191

macOS

sudo lsof -nP -i :8191

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 8191 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 8191
netstat -ano | findstr :8191

From another machine

nmap -p 8191 -sV <host>
nc -zv <host> 8191

Block it in the firewall

sudo ufw deny 8191/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 8191" -Direction Inbound -LocalPort 8191 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 8191 used for?

Port 8191 is assigned by IANA to limnerpressure (Limner Pressure).

Is port 8191 TCP or UDP?

Port 8191 is registered for TCP.

Is it safe to open port 8191?

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 8191 is open?

On Linux run "ss -ltnup 'sport = :8191'", on macOS "lsof -nP -i :8191", and on Windows "netstat -ano | findstr :8191" to see the local process. From another machine, "nmap -p 8191 <host>" shows whether it is reachable.

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