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// Other services

Port 2214: RDQ Protocol Interface

Port 2214 is assigned by IANA to rpi (RDQ Protocol Interface).

2214

How rpi works

Other services
client:2214rpiresponse client:2214rpiresponse

The client sends a request to port 2214 and the rpi 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 2214 dangerous?

We have no specific security note for port 2214. 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 2214

ServicePortTransportDescriptionReferenceUpdated
rpi 2214 TCP, UDP RDQ Protocol Interface - 2005-12

// source: IANA service name and port number registry

03 Check it

Which program uses port 2214, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2214'      # process listening on 2214
sudo lsof -nP -i :2214

macOS

sudo lsof -nP -i :2214

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2214 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2214
netstat -ano | findstr :2214

From another machine

nmap -p 2214 -sV <host>
sudo nmap -sU -p 2214 <host>
nc -zv <host> 2214

Block it in the firewall

sudo ufw deny 2214/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2214" -Direction Inbound -LocalPort 2214 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2214 used for?

Port 2214 is assigned by IANA to rpi (RDQ Protocol Interface).

Is port 2214 TCP or UDP?

Port 2214 is registered for TCP and UDP.

Is it safe to open port 2214?

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 2214 is open?

On Linux run "ss -ltnup 'sport = :2214'", on macOS "lsof -nP -i :2214", and on Windows "netstat -ano | findstr :2214" to see the local process. From another machine, "nmap -p 2214 <host>" shows whether it is reachable.

05 Related
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