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// Other services

Port 4081: Lorica inside facing (SSL)

Port 4081 is assigned by IANA to lorica-in-sec (Lorica inside facing (SSL)).

4081

How lorica-in-sec works

Other services
client:4081lorica-in-secresponse client:4081lorica-in-secresponse

The client sends a request to port 4081 and the lorica-in-sec 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 4081 dangerous?

We have no specific security note for port 4081. 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 4081

ServicePortTransportDescriptionReferenceUpdated
lorica-in-sec 4081 TCP, UDP Lorica inside facing (SSL) - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 4081, and is it reachable?

Linux

sudo ss -ltnup 'sport = :4081'      # process listening on 4081
sudo lsof -nP -i :4081

macOS

sudo lsof -nP -i :4081

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 4081 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 4081
netstat -ano | findstr :4081

From another machine

nmap -p 4081 -sV <host>
sudo nmap -sU -p 4081 <host>
nc -zv <host> 4081

Block it in the firewall

sudo ufw deny 4081/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 4081" -Direction Inbound -LocalPort 4081 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 4081 used for?

Port 4081 is assigned by IANA to lorica-in-sec (Lorica inside facing (SSL)).

Is port 4081 TCP or UDP?

Port 4081 is registered for TCP and UDP.

Is it safe to open port 4081?

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 4081 is open?

On Linux run "ss -ltnup 'sport = :4081'", on macOS "lsof -nP -i :4081", and on Windows "netstat -ano | findstr :4081" to see the local process. From another machine, "nmap -p 4081 <host>" shows whether it is reachable.

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