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// Other services

Port 1669: netview-aix-9

Port 1669 is assigned by IANA to netview-aix-9 (netview-aix-9).

1669

How netview-aix-9 works

Other services
client:1669netview-aix-9response client:1669netview-aix-9response

The client sends a request to port 1669 and the netview-aix-9 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 1669 dangerous?

We have no specific security note for port 1669. 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 1669

ServicePortTransportDescriptionReferenceUpdated
netview-aix-9 1669 TCP, UDP netview-aix-9 - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1669, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1669'      # process listening on 1669
sudo lsof -nP -i :1669

macOS

sudo lsof -nP -i :1669

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1669 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1669
netstat -ano | findstr :1669

From another machine

nmap -p 1669 -sV <host>
sudo nmap -sU -p 1669 <host>
nc -zv <host> 1669

Block it in the firewall

sudo ufw deny 1669/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1669" -Direction Inbound -LocalPort 1669 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1669 used for?

Port 1669 is assigned by IANA to netview-aix-9 (netview-aix-9).

Is port 1669 TCP or UDP?

Port 1669 is registered for TCP and UDP.

Is it safe to open port 1669?

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 1669 is open?

On Linux run "ss -ltnup 'sport = :1669'", on macOS "lsof -nP -i :1669", and on Windows "netstat -ano | findstr :1669" to see the local process. From another machine, "nmap -p 1669 <host>" shows whether it is reachable.

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