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Local dataset, no network
// Other services

Port 6317: Navtech Radar Sensor Data

Port 6317 is assigned by IANA to nav-data (Navtech Radar Sensor Data), nav-data-cmd (Navtech Radar Sensor Data Command).

6317

How nav-data works

Other services
client:6317nav-dataresponse client:6317nav-dataresponse

The client sends a request to port 6317 and the nav-data service answers.

Transport
UDP · TCP
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 6317 dangerous?

We have no specific security note for port 6317. 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 6317

ServicePortTransportDescriptionReferenceUpdated
nav-data 6317 UDP Navtech Radar Sensor Data - 2013-02-20
nav-data-cmd 6317 TCP Navtech Radar Sensor Data Command - 2013-02-20

// source: IANA service name and port number registry

03 Check it

Which program uses port 6317, and is it reachable?

Linux

sudo ss -ltnup 'sport = :6317'      # process listening on 6317
sudo lsof -nP -i :6317

macOS

sudo lsof -nP -i :6317

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 6317 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 6317
netstat -ano | findstr :6317

From another machine

nmap -p 6317 -sV <host>
sudo nmap -sU -p 6317 <host>
nc -zv <host> 6317

Block it in the firewall

sudo ufw deny 6317/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 6317" -Direction Inbound -LocalPort 6317 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 6317 used for?

Port 6317 is assigned by IANA to nav-data (Navtech Radar Sensor Data), nav-data-cmd (Navtech Radar Sensor Data Command).

Is port 6317 TCP or UDP?

Port 6317 is registered for UDP and TCP.

Is it safe to open port 6317?

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 6317 is open?

On Linux run "ss -ltnup 'sport = :6317'", on macOS "lsof -nP -i :6317", and on Windows "netstat -ano | findstr :6317" to see the local process. From another machine, "nmap -p 6317 <host>" shows whether it is reachable.

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