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// Other services

Port 3316: AICC/CMI

Port 3316 is assigned by IANA to aicc-cmi (AICC/CMI).

3316

How aicc-cmi works

Other services
client:3316aicc-cmiresponse client:3316aicc-cmiresponse

The client sends a request to port 3316 and the aicc-cmi 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 3316 dangerous?

We have no specific security note for port 3316. 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 3316

ServicePortTransportDescriptionReferenceUpdated
aicc-cmi 3316 TCP, UDP AICC/CMI - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 3316, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3316'      # process listening on 3316
sudo lsof -nP -i :3316

macOS

sudo lsof -nP -i :3316

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3316 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3316
netstat -ano | findstr :3316

From another machine

nmap -p 3316 -sV <host>
sudo nmap -sU -p 3316 <host>
nc -zv <host> 3316

Block it in the firewall

sudo ufw deny 3316/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3316" -Direction Inbound -LocalPort 3316 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3316 used for?

Port 3316 is assigned by IANA to aicc-cmi (AICC/CMI).

Is port 3316 TCP or UDP?

Port 3316 is registered for TCP and UDP.

Is it safe to open port 3316?

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 3316 is open?

On Linux run "ss -ltnup 'sport = :3316'", on macOS "lsof -nP -i :3316", and on Windows "netstat -ano | findstr :3316" to see the local process. From another machine, "nmap -p 3316 <host>" shows whether it is reachable.

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