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// Other services

Port 3187: Open Design Listen Port

Port 3187 is assigned by IANA to odi-port (Open Design Listen Port).

3187

How odi-port works

Other services
client:3187odi-portresponse client:3187odi-portresponse

The client sends a request to port 3187 and the odi-port 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 3187 dangerous?

We have no specific security note for port 3187. 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 3187

ServicePortTransportDescriptionReferenceUpdated
odi-port 3187 TCP, UDP Open Design Listen Port - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 3187, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3187'      # process listening on 3187
sudo lsof -nP -i :3187

macOS

sudo lsof -nP -i :3187

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3187 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3187
netstat -ano | findstr :3187

From another machine

nmap -p 3187 -sV <host>
sudo nmap -sU -p 3187 <host>
nc -zv <host> 3187

Block it in the firewall

sudo ufw deny 3187/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3187" -Direction Inbound -LocalPort 3187 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3187 used for?

Port 3187 is assigned by IANA to odi-port (Open Design Listen Port).

Is port 3187 TCP or UDP?

Port 3187 is registered for TCP and UDP.

Is it safe to open port 3187?

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 3187 is open?

On Linux run "ss -ltnup 'sport = :3187'", on macOS "lsof -nP -i :3187", and on Windows "netstat -ano | findstr :3187" to see the local process. From another machine, "nmap -p 3187 <host>" shows whether it is reachable.

05 Related
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