CyberHunter
Local dataset, no network
// Other services

Port 5565: Data Protector BURA

Port 5565 is assigned by IANA to dp-bura (Data Protector BURA).

5565

How dp-bura works

Other services
client:5565dp-buraresponse client:5565dp-buraresponse

The client sends a request to port 5565 and the dp-bura service answers.

Transport
TCP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned1 registered service
Range
Registered (1024-49151)
01 Security

Is port 5565 dangerous?

We have no specific security note for port 5565. 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 5565

ServicePortTransportDescriptionReferenceUpdated
dp-bura 5565 TCP Data Protector BURA - 2019-10-04
-5565-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 5565, and is it reachable?

Linux

sudo ss -ltnup 'sport = :5565'      # process listening on 5565
sudo lsof -nP -i :5565

macOS

sudo lsof -nP -i :5565

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 5565 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 5565
netstat -ano | findstr :5565

From another machine

nmap -p 5565 -sV <host>
nc -zv <host> 5565

Block it in the firewall

sudo ufw deny 5565/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 5565" -Direction Inbound -LocalPort 5565 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 5565 used for?

Port 5565 is assigned by IANA to dp-bura (Data Protector BURA).

Is port 5565 TCP or UDP?

Port 5565 is registered for TCP.

Is it safe to open port 5565?

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 5565 is open?

On Linux run "ss -ltnup 'sport = :5565'", on macOS "lsof -nP -i :5565", and on Windows "netstat -ano | findstr :5565" to see the local process. From another machine, "nmap -p 5565 <host>" shows whether it is reachable.

05 Related

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