CyberHunter
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// Other services

Port 319: PTP Event

Port 319 is assigned by IANA to ptp-event (PTP Event).

319

How ptp-event works

Other services
client:319ptp-eventresponse client:319ptp-eventresponse

The client sends a request to port 319 and the ptp-event 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 319 dangerous?

We have no specific security note for port 319. 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 319

ServicePortTransportDescriptionReferenceUpdated
ptp-event 319 TCP, UDP PTP Event - 2010-07-27

// source: IANA service name and port number registry

03 Check it

Which program uses port 319, and is it reachable?

Linux

sudo ss -ltnup 'sport = :319'      # process listening on 319
sudo lsof -nP -i :319

macOS

sudo lsof -nP -i :319

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 319 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 319
netstat -ano | findstr :319

From another machine

nmap -p 319 -sV <host>
sudo nmap -sU -p 319 <host>
nc -zv <host> 319

Block it in the firewall

sudo ufw deny 319/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 319" -Direction Inbound -LocalPort 319 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 319 used for?

Port 319 is assigned by IANA to ptp-event (PTP Event).

Is port 319 TCP or UDP?

Port 319 is registered for TCP and UDP.

Is it safe to open port 319?

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 319 is open?

On Linux run "ss -ltnup 'sport = :319'", on macOS "lsof -nP -i :319", and on Windows "netstat -ano | findstr :319" to see the local process. From another machine, "nmap -p 319 <host>" shows whether it is reachable.

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