CyberHunter
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// Other services

Port 320: PTP General

Port 320 is assigned by IANA to ptp-general (PTP General).

320

How ptp-general works

Other services
client:320ptp-generalresponse client:320ptp-generalresponse

The client sends a request to port 320 and the ptp-general 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 320 dangerous?

We have no specific security note for port 320. 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 320

ServicePortTransportDescriptionReferenceUpdated
ptp-general 320 TCP, UDP PTP General - 2010-07-27

// source: IANA service name and port number registry

03 Check it

Which program uses port 320, and is it reachable?

Linux

sudo ss -ltnup 'sport = :320'      # process listening on 320
sudo lsof -nP -i :320

macOS

sudo lsof -nP -i :320

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 320 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 320
netstat -ano | findstr :320

From another machine

nmap -p 320 -sV <host>
sudo nmap -sU -p 320 <host>
nc -zv <host> 320

Block it in the firewall

sudo ufw deny 320/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 320" -Direction Inbound -LocalPort 320 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 320 used for?

Port 320 is assigned by IANA to ptp-general (PTP General).

Is port 320 TCP or UDP?

Port 320 is registered for TCP and UDP.

Is it safe to open port 320?

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 320 is open?

On Linux run "ss -ltnup 'sport = :320'", on macOS "lsof -nP -i :320", and on Windows "netstat -ano | findstr :320" to see the local process. From another machine, "nmap -p 320 <host>" shows whether it is reachable.

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