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// Other services

Port 11106: SGI LK Licensing service

Port 11106 is assigned by IANA to sgi-lk (SGI LK Licensing service).

11106

How sgi-lk works

Other services
client:11106sgi-lkresponse client:11106sgi-lkresponse

The client sends a request to port 11106 and the sgi-lk 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 11106 dangerous?

We have no specific security note for port 11106. 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 11106

ServicePortTransportDescriptionReferenceUpdated
sgi-lk 11106 TCP, UDP SGI LK Licensing service - 2009-01-06

// source: IANA service name and port number registry

03 Check it

Which program uses port 11106, and is it reachable?

Linux

sudo ss -ltnup 'sport = :11106'      # process listening on 11106
sudo lsof -nP -i :11106

macOS

sudo lsof -nP -i :11106

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 11106 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 11106
netstat -ano | findstr :11106

From another machine

nmap -p 11106 -sV <host>
sudo nmap -sU -p 11106 <host>
nc -zv <host> 11106

Block it in the firewall

sudo ufw deny 11106/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 11106" -Direction Inbound -LocalPort 11106 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 11106 used for?

Port 11106 is assigned by IANA to sgi-lk (SGI LK Licensing service).

Is port 11106 TCP or UDP?

Port 11106 is registered for TCP and UDP.

Is it safe to open port 11106?

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 11106 is open?

On Linux run "ss -ltnup 'sport = :11106'", on macOS "lsof -nP -i :11106", and on Windows "netstat -ano | findstr :11106" to see the local process. From another machine, "nmap -p 11106 <host>" shows whether it is reachable.

05 Related
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