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// Other services

Port 8612: Canon BJNP Port 2

Port 8612 is assigned by IANA to canon-bjnp2 (Canon BJNP Port 2).

8612

How canon-bjnp2 works

Other services
client:8612canon-bjnp2response client:8612canon-bjnp2response

The client sends a request to port 8612 and the canon-bjnp2 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 8612 dangerous?

We have no specific security note for port 8612. 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 8612

ServicePortTransportDescriptionReferenceUpdated
canon-bjnp2 8612 TCP, UDP Canon BJNP Port 2 - 2003-11

// source: IANA service name and port number registry

03 Check it

Which program uses port 8612, and is it reachable?

Linux

sudo ss -ltnup 'sport = :8612'      # process listening on 8612
sudo lsof -nP -i :8612

macOS

sudo lsof -nP -i :8612

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 8612 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 8612
netstat -ano | findstr :8612

From another machine

nmap -p 8612 -sV <host>
sudo nmap -sU -p 8612 <host>
nc -zv <host> 8612

Block it in the firewall

sudo ufw deny 8612/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 8612" -Direction Inbound -LocalPort 8612 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 8612 used for?

Port 8612 is assigned by IANA to canon-bjnp2 (Canon BJNP Port 2).

Is port 8612 TCP or UDP?

Port 8612 is registered for TCP and UDP.

Is it safe to open port 8612?

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 8612 is open?

On Linux run "ss -ltnup 'sport = :8612'", on macOS "lsof -nP -i :8612", and on Windows "netstat -ano | findstr :8612" to see the local process. From another machine, "nmap -p 8612 <host>" shows whether it is reachable.

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