CyberHunter
Local dataset, no network
// Other services

Port 6419: Simple VDR Protocol

Port 6419 is assigned by IANA to svdrp (Simple VDR Protocol), svdrp-disc (Simple VDR Protocol Discovery).

6419

How svdrp works

Other services
client:6419svdrpresponse client:6419svdrpresponse

The client sends a request to port 6419 and the svdrp service answers.

Transport
TCP · UDP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned2 registered services
Range
Registered (1024-49151)
Category
Other services
01 Security

Is port 6419 dangerous?

We have no specific security note for port 6419. 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 6419

ServicePortTransportDescriptionReferenceUpdated
svdrp 6419 TCP Simple VDR Protocol - 2010-03-31
svdrp-disc 6419 UDP Simple VDR Protocol Discovery - 2015-05-08

// source: IANA service name and port number registry

03 Check it

Which program uses port 6419, and is it reachable?

Linux

sudo ss -ltnup 'sport = :6419'      # process listening on 6419
sudo lsof -nP -i :6419

macOS

sudo lsof -nP -i :6419

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 6419 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 6419
netstat -ano | findstr :6419

From another machine

nmap -p 6419 -sV <host>
sudo nmap -sU -p 6419 <host>
nc -zv <host> 6419

Block it in the firewall

sudo ufw deny 6419/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 6419" -Direction Inbound -LocalPort 6419 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 6419 used for?

Port 6419 is assigned by IANA to svdrp (Simple VDR Protocol), svdrp-disc (Simple VDR Protocol Discovery).

Is port 6419 TCP or UDP?

Port 6419 is registered for TCP and UDP.

Is it safe to open port 6419?

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 6419 is open?

On Linux run "ss -ltnup 'sport = :6419'", on macOS "lsof -nP -i :6419", and on Windows "netstat -ano | findstr :6419" to see the local process. From another machine, "nmap -p 6419 <host>" shows whether it is reachable.

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