CyberHunter
Local dataset, no network
// Other services

Port 1668: netview-aix-8

Port 1668 is assigned by IANA to netview-aix-8 (netview-aix-8).

1668

How netview-aix-8 works

Other services
client:1668netview-aix-8response client:1668netview-aix-8response

The client sends a request to port 1668 and the netview-aix-8 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 1668 dangerous?

We have no specific security note for port 1668. 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 1668

ServicePortTransportDescriptionReferenceUpdated
netview-aix-8 1668 TCP, UDP netview-aix-8 - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1668, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1668'      # process listening on 1668
sudo lsof -nP -i :1668

macOS

sudo lsof -nP -i :1668

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1668 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1668
netstat -ano | findstr :1668

From another machine

nmap -p 1668 -sV <host>
sudo nmap -sU -p 1668 <host>
nc -zv <host> 1668

Block it in the firewall

sudo ufw deny 1668/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1668" -Direction Inbound -LocalPort 1668 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1668 used for?

Port 1668 is assigned by IANA to netview-aix-8 (netview-aix-8).

Is port 1668 TCP or UDP?

Port 1668 is registered for TCP and UDP.

Is it safe to open port 1668?

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 1668 is open?

On Linux run "ss -ltnup 'sport = :1668'", on macOS "lsof -nP -i :1668", and on Windows "netstat -ano | findstr :1668" to see the local process. From another machine, "nmap -p 1668 <host>" shows whether it is reachable.

05 Related
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