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// Other services

Port 2225: Resource Connection Initiation Protocol

Port 2225 is assigned by IANA to rcip-itu (Resource Connection Initiation Protocol).

2225

How rcip-itu works

Other services
client:2225rcip-ituresponse client:2225rcip-ituresponse

The client sends a request to port 2225 and the rcip-itu service answers.

Transport
TCP · SCTP
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 2225 dangerous?

We have no specific security note for port 2225. 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 2225

ServicePortTransportDescriptionReferenceUpdated
rcip-itu 2225 TCP, SCTP Resource Connection Initiation Protocol - -
-2225-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 2225, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2225'      # process listening on 2225
sudo lsof -nP -i :2225

macOS

sudo lsof -nP -i :2225

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2225 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2225
netstat -ano | findstr :2225

From another machine

nmap -p 2225 -sV <host>
nc -zv <host> 2225

Block it in the firewall

sudo ufw deny 2225/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2225" -Direction Inbound -LocalPort 2225 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2225 used for?

Port 2225 is assigned by IANA to rcip-itu (Resource Connection Initiation Protocol).

Is port 2225 TCP or UDP?

Port 2225 is registered for TCP and SCTP.

Is it safe to open port 2225?

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 2225 is open?

On Linux run "ss -ltnup 'sport = :2225'", on macOS "lsof -nP -i :2225", and on Windows "netstat -ano | findstr :2225" to see the local process. From another machine, "nmap -p 2225 <host>" shows whether it is reachable.

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