CyberHunter
Local dataset, no network
// Other services

Port 27782: ARS VISTA Application

Port 27782 is assigned by IANA to ars-vista (ARS VISTA Application).

27782

How ars-vista works

Other services
client:27782ars-vistaresponse client:27782ars-vistaresponse

The client sends a request to port 27782 and the ars-vista 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 27782 dangerous?

We have no specific security note for port 27782. 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 27782

ServicePortTransportDescriptionReferenceUpdated
ars-vista 27782 TCP, UDP ARS VISTA Application - 2004-11

// source: IANA service name and port number registry

03 Check it

Which program uses port 27782, and is it reachable?

Linux

sudo ss -ltnup 'sport = :27782'      # process listening on 27782
sudo lsof -nP -i :27782

macOS

sudo lsof -nP -i :27782

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 27782 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 27782
netstat -ano | findstr :27782

From another machine

nmap -p 27782 -sV <host>
sudo nmap -sU -p 27782 <host>
nc -zv <host> 27782

Block it in the firewall

sudo ufw deny 27782/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 27782" -Direction Inbound -LocalPort 27782 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 27782 used for?

Port 27782 is assigned by IANA to ars-vista (ARS VISTA Application).

Is port 27782 TCP or UDP?

Port 27782 is registered for TCP and UDP.

Is it safe to open port 27782?

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 27782 is open?

On Linux run "ss -ltnup 'sport = :27782'", on macOS "lsof -nP -i :27782", and on Windows "netstat -ano | findstr :27782" to see the local process. From another machine, "nmap -p 27782 <host>" shows whether it is reachable.

05 Related
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