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Port 8668 (spartan)

IANA assigns port 8668 to spartan: Spartan management.

Registered (user) port, 1024-49151 TCP

IANA assignment

Service nameProtoDescriptionAssigneeReference
spartan TCP Spartan management Tenebris Technologies Inc -

Registry dates for this port: registered 2023-10-26.

Check what is listening on port 8668

Linux: is anything listening on TCP 8668?
sudo ss -tlnp 'sport = :8668'
Linux / macOS: which process owns the port
sudo lsof -nP -i :8668
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':8668 '
Windows (Command Prompt)
netstat -ano | findstr :8668
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 8668 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 8668
From Windows
Test-NetConnection HOST -Port 8668

Block port 8668 in the firewall

ufw
sudo ufw deny 8668/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 8668 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 8668 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 8668' -Direction Inbound -Protocol TCP -LocalPort 8668 -Action Block

Related ports

8665monetra8666monetra-admin8675msi-cps-rm, msi-cps-rm-disc8686sun-as-jmxrmi

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