Port 4330 (dey-sapi)

IANA assigns port 4330 to dey-sapi: DEY Storage Administration REST API.

Registered (user) port, 1024-49151 TCP

IANA assignment

Service nameProtoDescriptionAssigneeReference

dey-sapi TCP DEY Storage Administration REST API DEY Storage Systems Inc -

Registry dates for this port: registered 2013-03-01.

Linux: is anything listening on TCP 4330?

sudo ss -tlnp 'sport = :4330'

Linux / macOS: which process owns the port

sudo lsof -nP -i :4330

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':4330 '

Windows (Command Prompt)

netstat -ano | findstr :4330

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 4330 -State Listen | Select LocalAddress,OwningProcess

From another machine

nc -vz -w 5 HOST 4330

From Windows

Test-NetConnection HOST -Port 4330

ufw

sudo ufw deny 4330/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 4330 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 4330 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 4330' -Direction Inbound -Protocol TCP -LocalPort 4330 -Action Block

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Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.