CyberHunter
Local dataset, no network
// Other services

Port 422: Ariel 3

Port 422 is assigned by IANA to ariel3 (Ariel 3).

422

How ariel3 works

Other services
client:422ariel3response client:422ariel3response

The client sends a request to port 422 and the ariel3 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
Well-known (0-1023)
Category
Other services
01 Security

Is port 422 dangerous?

We have no specific security note for port 422. 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 422

ServicePortTransportDescriptionReferenceUpdated
ariel3 422 TCP, UDP Ariel 3 - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 422, and is it reachable?

Linux

sudo ss -ltnup 'sport = :422'      # process listening on 422
sudo lsof -nP -i :422

macOS

sudo lsof -nP -i :422

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 422 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 422
netstat -ano | findstr :422

From another machine

nmap -p 422 -sV <host>
sudo nmap -sU -p 422 <host>
nc -zv <host> 422

Block it in the firewall

sudo ufw deny 422/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 422" -Direction Inbound -LocalPort 422 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 422 used for?

Port 422 is assigned by IANA to ariel3 (Ariel 3).

Is port 422 TCP or UDP?

Port 422 is registered for TCP and UDP.

Is it safe to open port 422?

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 422 is open?

On Linux run "ss -ltnup 'sport = :422'", on macOS "lsof -nP -i :422", and on Windows "netstat -ano | findstr :422" to see the local process. From another machine, "nmap -p 422 <host>" shows whether it is reachable.

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