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// Other services

Port 6116: XicTools License Manager Service

Port 6116 is assigned by IANA to xtlserv (XicTools License Manager Service).

6116

How xtlserv works

Other services
client:6116xtlservresponse client:6116xtlservresponse

The client sends a request to port 6116 and the xtlserv 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 6116 dangerous?

We have no specific security note for port 6116. 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 6116

ServicePortTransportDescriptionReferenceUpdated
xtlserv 6116 TCP XicTools License Manager Service - 2010-10-07
-6116-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 6116, and is it reachable?

Linux

sudo ss -ltnup 'sport = :6116'      # process listening on 6116
sudo lsof -nP -i :6116

macOS

sudo lsof -nP -i :6116

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 6116 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 6116
netstat -ano | findstr :6116

From another machine

nmap -p 6116 -sV <host>
nc -zv <host> 6116

Block it in the firewall

sudo ufw deny 6116/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 6116" -Direction Inbound -LocalPort 6116 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 6116 used for?

Port 6116 is assigned by IANA to xtlserv (XicTools License Manager Service).

Is port 6116 TCP or UDP?

Port 6116 is registered for TCP.

Is it safe to open port 6116?

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 6116 is open?

On Linux run "ss -ltnup 'sport = :6116'", on macOS "lsof -nP -i :6116", and on Windows "netstat -ano | findstr :6116" to see the local process. From another machine, "nmap -p 6116 <host>" shows whether it is reachable.

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