CyberHunter
Local dataset, no network
// Other services

Port 632: bmpp

Port 632 is assigned by IANA to bmpp (bmpp).

632

How bmpp works

Other services
client:632bmppresponse client:632bmppresponse

The client sends a request to port 632 and the bmpp 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 632 dangerous?

We have no specific security note for port 632. 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 632

ServicePortTransportDescriptionReferenceUpdated
bmpp 632 TCP, UDP bmpp - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 632, and is it reachable?

Linux

sudo ss -ltnup 'sport = :632'      # process listening on 632
sudo lsof -nP -i :632

macOS

sudo lsof -nP -i :632

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 632 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 632
netstat -ano | findstr :632

From another machine

nmap -p 632 -sV <host>
sudo nmap -sU -p 632 <host>
nc -zv <host> 632

Block it in the firewall

sudo ufw deny 632/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 632" -Direction Inbound -LocalPort 632 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 632 used for?

Port 632 is assigned by IANA to bmpp (bmpp).

Is port 632 TCP or UDP?

Port 632 is registered for TCP and UDP.

Is it safe to open port 632?

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 632 is open?

On Linux run "ss -ltnup 'sport = :632'", on macOS "lsof -nP -i :632", and on Windows "netstat -ano | findstr :632" to see the local process. From another machine, "nmap -p 632 <host>" shows whether it is reachable.

05 Related
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