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// Other services

Port 2536: btpp2audctr1

Port 2536 is assigned by IANA to btpp2audctr1 (btpp2audctr1).

2536

How btpp2audctr1 works

Other services
client:2536btpp2audctr1response client:2536btpp2audctr1response

The client sends a request to port 2536 and the btpp2audctr1 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 2536 dangerous?

We have no specific security note for port 2536. 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 2536

ServicePortTransportDescriptionReferenceUpdated
btpp2audctr1 2536 TCP, UDP btpp2audctr1 - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2536, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2536'      # process listening on 2536
sudo lsof -nP -i :2536

macOS

sudo lsof -nP -i :2536

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2536 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2536
netstat -ano | findstr :2536

From another machine

nmap -p 2536 -sV <host>
sudo nmap -sU -p 2536 <host>
nc -zv <host> 2536

Block it in the firewall

sudo ufw deny 2536/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2536" -Direction Inbound -LocalPort 2536 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2536 used for?

Port 2536 is assigned by IANA to btpp2audctr1 (btpp2audctr1).

Is port 2536 TCP or UDP?

Port 2536 is registered for TCP and UDP.

Is it safe to open port 2536?

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 2536 is open?

On Linux run "ss -ltnup 'sport = :2536'", on macOS "lsof -nP -i :2536", and on Windows "netstat -ano | findstr :2536" to see the local process. From another machine, "nmap -p 2536 <host>" shows whether it is reachable.

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