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// Other services

Port 9216: Aionex Communication Management Engine

Port 9216 is assigned by IANA to acme (Aionex Communication Management Engine).

9216

How acme works

Other services
client:9216acmeresponse client:9216acmeresponse

The client sends a request to port 9216 and the acme 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 9216 dangerous?

We have no specific security note for port 9216. 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 9216

ServicePortTransportDescriptionReferenceUpdated
acme 9216 TCP, UDP Aionex Communication Management Engine - 2006-04

// source: IANA service name and port number registry

03 Check it

Which program uses port 9216, and is it reachable?

Linux

sudo ss -ltnup 'sport = :9216'      # process listening on 9216
sudo lsof -nP -i :9216

macOS

sudo lsof -nP -i :9216

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 9216 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 9216
netstat -ano | findstr :9216

From another machine

nmap -p 9216 -sV <host>
sudo nmap -sU -p 9216 <host>
nc -zv <host> 9216

Block it in the firewall

sudo ufw deny 9216/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 9216" -Direction Inbound -LocalPort 9216 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 9216 used for?

Port 9216 is assigned by IANA to acme (Aionex Communication Management Engine).

Is port 9216 TCP or UDP?

Port 9216 is registered for TCP and UDP.

Is it safe to open port 9216?

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 9216 is open?

On Linux run "ss -ltnup 'sport = :9216'", on macOS "lsof -nP -i :9216", and on Windows "netstat -ano | findstr :9216" to see the local process. From another machine, "nmap -p 9216 <host>" shows whether it is reachable.

05 Related
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