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// Other services

Port 27010: A protocol for managing license services

Port 27010 is assigned by IANA to flex-lmadmin (A protocol for managing license services).

27010

How flex-lmadmin works

Other services
client:27010flex-lmadminresponse client:27010flex-lmadminresponse

The client sends a request to port 27010 and the flex-lmadmin 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 27010 dangerous?

We have no specific security note for port 27010. 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 27010

ServicePortTransportDescriptionReferenceUpdated
flex-lmadmin 27010 TCP A protocol for managing license services - 2018-08-22
-27010-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 27010, and is it reachable?

Linux

sudo ss -ltnup 'sport = :27010'      # process listening on 27010
sudo lsof -nP -i :27010

macOS

sudo lsof -nP -i :27010

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 27010 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 27010
netstat -ano | findstr :27010

From another machine

nmap -p 27010 -sV <host>
nc -zv <host> 27010

Block it in the firewall

sudo ufw deny 27010/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 27010" -Direction Inbound -LocalPort 27010 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 27010 used for?

Port 27010 is assigned by IANA to flex-lmadmin (A protocol for managing license services).

Is port 27010 TCP or UDP?

Port 27010 is registered for TCP.

Is it safe to open port 27010?

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 27010 is open?

On Linux run "ss -ltnup 'sport = :27010'", on macOS "lsof -nP -i :27010", and on Windows "netstat -ano | findstr :27010" to see the local process. From another machine, "nmap -p 27010 <host>" shows whether it is reachable.

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