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// Other services

Port 13720: BPRD Protocol (VERITAS NetBackup)

Port 13720 is assigned by IANA to bprd (BPRD Protocol (VERITAS NetBackup)).

13720

How bprd works

Other services
client:13720bprdresponse client:13720bprdresponse

The client sends a request to port 13720 and the bprd 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 13720 dangerous?

We have no specific security note for port 13720. 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 13720

ServicePortTransportDescriptionReferenceUpdated
bprd 13720 TCP, UDP BPRD Protocol (VERITAS NetBackup) - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 13720, and is it reachable?

Linux

sudo ss -ltnup 'sport = :13720'      # process listening on 13720
sudo lsof -nP -i :13720

macOS

sudo lsof -nP -i :13720

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 13720 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 13720
netstat -ano | findstr :13720

From another machine

nmap -p 13720 -sV <host>
sudo nmap -sU -p 13720 <host>
nc -zv <host> 13720

Block it in the firewall

sudo ufw deny 13720/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 13720" -Direction Inbound -LocalPort 13720 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 13720 used for?

Port 13720 is assigned by IANA to bprd (BPRD Protocol (VERITAS NetBackup)).

Is port 13720 TCP or UDP?

Port 13720 is registered for TCP and UDP.

Is it safe to open port 13720?

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 13720 is open?

On Linux run "ss -ltnup 'sport = :13720'", on macOS "lsof -nP -i :13720", and on Windows "netstat -ano | findstr :13720" to see the local process. From another machine, "nmap -p 13720 <host>" shows whether it is reachable.

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