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// Other services

Port 9164: apani5

Port 9164 is assigned by IANA to apani5 (apani5).

9164

How apani5 works

Other services
client:9164apani5response client:9164apani5response

The client sends a request to port 9164 and the apani5 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 9164 dangerous?

We have no specific security note for port 9164. 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 9164

ServicePortTransportDescriptionReferenceUpdated
apani5 9164 TCP, UDP apani5 - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 9164, and is it reachable?

Linux

sudo ss -ltnup 'sport = :9164'      # process listening on 9164
sudo lsof -nP -i :9164

macOS

sudo lsof -nP -i :9164

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 9164 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 9164
netstat -ano | findstr :9164

From another machine

nmap -p 9164 -sV <host>
sudo nmap -sU -p 9164 <host>
nc -zv <host> 9164

Block it in the firewall

sudo ufw deny 9164/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 9164" -Direction Inbound -LocalPort 9164 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 9164 used for?

Port 9164 is assigned by IANA to apani5 (apani5).

Is port 9164 TCP or UDP?

Port 9164 is registered for TCP and UDP.

Is it safe to open port 9164?

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 9164 is open?

On Linux run "ss -ltnup 'sport = :9164'", on macOS "lsof -nP -i :9164", and on Windows "netstat -ano | findstr :9164" to see the local process. From another machine, "nmap -p 9164 <host>" shows whether it is reachable.

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