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// Other services

Port 4675: BIAP Device Status

Port 4675 is assigned by IANA to dhct-status (BIAP Device Status).

4675

How dhct-status works

Other services
client:4675dhct-statusresponse client:4675dhct-statusresponse

The client sends a request to port 4675 and the dhct-status 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 4675 dangerous?

We have no specific security note for port 4675. 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 4675

ServicePortTransportDescriptionReferenceUpdated
dhct-status 4675 TCP, UDP BIAP Device Status - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 4675, and is it reachable?

Linux

sudo ss -ltnup 'sport = :4675'      # process listening on 4675
sudo lsof -nP -i :4675

macOS

sudo lsof -nP -i :4675

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 4675 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 4675
netstat -ano | findstr :4675

From another machine

nmap -p 4675 -sV <host>
sudo nmap -sU -p 4675 <host>
nc -zv <host> 4675

Block it in the firewall

sudo ufw deny 4675/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 4675" -Direction Inbound -LocalPort 4675 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 4675 used for?

Port 4675 is assigned by IANA to dhct-status (BIAP Device Status).

Is port 4675 TCP or UDP?

Port 4675 is registered for TCP and UDP.

Is it safe to open port 4675?

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 4675 is open?

On Linux run "ss -ltnup 'sport = :4675'", on macOS "lsof -nP -i :4675", and on Windows "netstat -ano | findstr :4675" to see the local process. From another machine, "nmap -p 4675 <host>" shows whether it is reachable.

05 Related
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