CyberHunter
Local dataset, no network
// Other services

Port 264: BGMP

Port 264 is assigned by IANA to bgmp (BGMP).

264

How bgmp works

Other services
client:264bgmpresponse client:264bgmpresponse

The client sends a request to port 264 and the bgmp 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 264 dangerous?

We have no specific security note for port 264. 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 264

ServicePortTransportDescriptionReferenceUpdated
bgmp 264 TCP, UDP BGMP - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 264, and is it reachable?

Linux

sudo ss -ltnup 'sport = :264'      # process listening on 264
sudo lsof -nP -i :264

macOS

sudo lsof -nP -i :264

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 264 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 264
netstat -ano | findstr :264

From another machine

nmap -p 264 -sV <host>
sudo nmap -sU -p 264 <host>
nc -zv <host> 264

Block it in the firewall

sudo ufw deny 264/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 264" -Direction Inbound -LocalPort 264 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 264 used for?

Port 264 is assigned by IANA to bgmp (BGMP).

Is port 264 TCP or UDP?

Port 264 is registered for TCP and UDP.

Is it safe to open port 264?

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 264 is open?

On Linux run "ss -ltnup 'sport = :264'", on macOS "lsof -nP -i :264", and on Windows "netstat -ano | findstr :264" to see the local process. From another machine, "nmap -p 264 <host>" shows whether it is reachable.

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