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// Other services

Port 712: TBRPF

Port 712 is assigned by IANA to tbrpf (TBRPF).

712

How tbrpf works

Other services
client:712tbrpfresponse client:712tbrpfresponse

The client sends a request to port 712 and the tbrpf 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 712 dangerous?

We have no specific security note for port 712. 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 712

ServicePortTransportDescriptionReferenceUpdated
tbrpf 712 TCP, UDP TBRPF RFC 3684 -

// source: IANA service name and port number registry

03 Check it

Which program uses port 712, and is it reachable?

Linux

sudo ss -ltnup 'sport = :712'      # process listening on 712
sudo lsof -nP -i :712

macOS

sudo lsof -nP -i :712

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 712 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 712
netstat -ano | findstr :712

From another machine

nmap -p 712 -sV <host>
sudo nmap -sU -p 712 <host>
nc -zv <host> 712

Block it in the firewall

sudo ufw deny 712/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 712" -Direction Inbound -LocalPort 712 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 712 used for?

Port 712 is assigned by IANA to tbrpf (TBRPF).

Is port 712 TCP or UDP?

Port 712 is registered for TCP and UDP.

Is it safe to open port 712?

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 712 is open?

On Linux run "ss -ltnup 'sport = :712'", on macOS "lsof -nP -i :712", and on Windows "netstat -ano | findstr :712" to see the local process. From another machine, "nmap -p 712 <host>" shows whether it is reachable.

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