CyberHunter
Local dataset, no network
// Other services

Port 8611: Canon BJNP Port 1

Port 8611 is assigned by IANA to canon-bjnp1 (Canon BJNP Port 1).

8611

How canon-bjnp1 works

Other services
client:8611canon-bjnp1response client:8611canon-bjnp1response

The client sends a request to port 8611 and the canon-bjnp1 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 8611 dangerous?

We have no specific security note for port 8611. 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 8611

ServicePortTransportDescriptionReferenceUpdated
canon-bjnp1 8611 TCP, UDP Canon BJNP Port 1 - 2003-11

// source: IANA service name and port number registry

03 Check it

Which program uses port 8611, and is it reachable?

Linux

sudo ss -ltnup 'sport = :8611'      # process listening on 8611
sudo lsof -nP -i :8611

macOS

sudo lsof -nP -i :8611

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 8611 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 8611
netstat -ano | findstr :8611

From another machine

nmap -p 8611 -sV <host>
sudo nmap -sU -p 8611 <host>
nc -zv <host> 8611

Block it in the firewall

sudo ufw deny 8611/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 8611" -Direction Inbound -LocalPort 8611 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 8611 used for?

Port 8611 is assigned by IANA to canon-bjnp1 (Canon BJNP Port 1).

Is port 8611 TCP or UDP?

Port 8611 is registered for TCP and UDP.

Is it safe to open port 8611?

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 8611 is open?

On Linux run "ss -ltnup 'sport = :8611'", on macOS "lsof -nP -i :8611", and on Windows "netstat -ano | findstr :8611" to see the local process. From another machine, "nmap -p 8611 <host>" shows whether it is reachable.

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