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Port 2225 (rcip-itu)

IANA assigns port 2225 to rcip-itu: Resource Connection Initiation Protocol.

Registered (user) port, 1024-49151 TCP

IANA assignment

Service nameProtoDescriptionAssigneeReference
rcip-itu TCP Resource Connection Initiation Protocol ITU TSB -
rcip-itu SCTP Resource Connection Initiation Protocol ITU TSB -

Check what is listening on port 2225

Linux: is anything listening on TCP 2225?
sudo ss -tlnp 'sport = :2225'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2225
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2225 '
Windows (Command Prompt)
netstat -ano | findstr :2225
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2225 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2225
From Windows
Test-NetConnection HOST -Port 2225

Block port 2225 in the firewall

ufw
sudo ufw deny 2225/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2225 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2225 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2225' -Direction Inbound -Protocol TCP -LocalPort 2225 -Action Block

Related ports

2223rockwell-csp22224efi-mg2226di-drm2227di-msg

All port numbers · Open port checker
Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.