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Port 3225 (fcip-port)

IANA assigns port 3225 to fcip-port: FCIP.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
fcip-port TCP FCIP - RFC 3821
fcip-port UDP FCIP - RFC 3821

Check what is listening on port 3225

Linux: is anything listening on TCP 3225?
sudo ss -tlnp 'sport = :3225'
Linux: UDP 3225
sudo ss -ulnp 'sport = :3225'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3225
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3225 '
Windows (Command Prompt)
netstat -ano | findstr :3225
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3225 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3225
From Windows
Test-NetConnection HOST -Port 3225
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3225

Block port 3225 in the firewall

ufw
sudo ufw deny 3225/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3225 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3225 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3225' -Direction Inbound -Protocol TCP -LocalPort 3225 -Action Block
ufw
sudo ufw deny 3225/udp
iptables
sudo iptables -A INPUT -p udp --dport 3225 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3225 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3225' -Direction Inbound -Protocol UDP -LocalPort 3225 -Action Block

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