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// Other services

Port 3116: MCTET Gateway

Port 3116 is assigned by IANA to mctet-gateway (MCTET Gateway).

3116

How mctet-gateway works

Other services
client:3116mctet-gatewayresponse client:3116mctet-gatewayresponse

The client sends a request to port 3116 and the mctet-gateway 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 3116 dangerous?

We have no specific security note for port 3116. 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 3116

ServicePortTransportDescriptionReferenceUpdated
mctet-gateway 3116 TCP, UDP MCTET Gateway - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 3116, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3116'      # process listening on 3116
sudo lsof -nP -i :3116

macOS

sudo lsof -nP -i :3116

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3116 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3116
netstat -ano | findstr :3116

From another machine

nmap -p 3116 -sV <host>
sudo nmap -sU -p 3116 <host>
nc -zv <host> 3116

Block it in the firewall

sudo ufw deny 3116/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3116" -Direction Inbound -LocalPort 3116 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3116 used for?

Port 3116 is assigned by IANA to mctet-gateway (MCTET Gateway).

Is port 3116 TCP or UDP?

Port 3116 is registered for TCP and UDP.

Is it safe to open port 3116?

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 3116 is open?

On Linux run "ss -ltnup 'sport = :3116'", on macOS "lsof -nP -i :3116", and on Windows "netstat -ano | findstr :3116" to see the local process. From another machine, "nmap -p 3116 <host>" shows whether it is reachable.

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