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// Other services

Port 3246: DVT SYSTEM PORT

Port 3246 is assigned by IANA to dvt-system (DVT SYSTEM PORT).

3246

How dvt-system works

Other services
client:3246dvt-systemresponse client:3246dvt-systemresponse

The client sends a request to port 3246 and the dvt-system 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 3246 dangerous?

We have no specific security note for port 3246. 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 3246

ServicePortTransportDescriptionReferenceUpdated
dvt-system 3246 TCP, UDP DVT SYSTEM PORT - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 3246, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3246'      # process listening on 3246
sudo lsof -nP -i :3246

macOS

sudo lsof -nP -i :3246

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3246 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3246
netstat -ano | findstr :3246

From another machine

nmap -p 3246 -sV <host>
sudo nmap -sU -p 3246 <host>
nc -zv <host> 3246

Block it in the firewall

sudo ufw deny 3246/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3246" -Direction Inbound -LocalPort 3246 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3246 used for?

Port 3246 is assigned by IANA to dvt-system (DVT SYSTEM PORT).

Is port 3246 TCP or UDP?

Port 3246 is registered for TCP and UDP.

Is it safe to open port 3246?

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 3246 is open?

On Linux run "ss -ltnup 'sport = :3246'", on macOS "lsof -nP -i :3246", and on Windows "netstat -ano | findstr :3246" to see the local process. From another machine, "nmap -p 3246 <host>" shows whether it is reachable.

05 Related
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