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// Other services

Port 2765: qip-audup

Port 2765 is assigned by IANA to qip-audup (qip-audup).

2765

How qip-audup works

Other services
client:2765qip-audupresponse client:2765qip-audupresponse

The client sends a request to port 2765 and the qip-audup 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 2765 dangerous?

We have no specific security note for port 2765. 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 2765

ServicePortTransportDescriptionReferenceUpdated
qip-audup 2765 TCP, UDP qip-audup - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2765, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2765'      # process listening on 2765
sudo lsof -nP -i :2765

macOS

sudo lsof -nP -i :2765

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2765 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2765
netstat -ano | findstr :2765

From another machine

nmap -p 2765 -sV <host>
sudo nmap -sU -p 2765 <host>
nc -zv <host> 2765

Block it in the firewall

sudo ufw deny 2765/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2765" -Direction Inbound -LocalPort 2765 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2765 used for?

Port 2765 is assigned by IANA to qip-audup (qip-audup).

Is port 2765 TCP or UDP?

Port 2765 is registered for TCP and UDP.

Is it safe to open port 2765?

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 2765 is open?

On Linux run "ss -ltnup 'sport = :2765'", on macOS "lsof -nP -i :2765", and on Windows "netstat -ano | findstr :2765" to see the local process. From another machine, "nmap -p 2765 <host>" shows whether it is reachable.

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