Port 8378 (cruise-config)

IANA assigns port 8378 to cruise-config: Cruise CONFIG.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference

cruise-config TCP Cruise CONFIG Steve Husak -

cruise-config UDP Cruise CONFIG Steve Husak -

Linux: is anything listening on TCP 8378?

sudo ss -tlnp 'sport = :8378'

Linux: UDP 8378

sudo ss -ulnp 'sport = :8378'

Linux / macOS: which process owns the port

sudo lsof -nP -i :8378

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':8378 '

Windows (Command Prompt)

netstat -ano | findstr :8378

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 8378 -State Listen | Select LocalAddress,OwningProcess

From another machine

nc -vz -w 5 HOST 8378

From Windows

Test-NetConnection HOST -Port 8378

UDP probe (no reply does not prove it is closed)

nc -vzu -w 5 HOST 8378

ufw

sudo ufw deny 8378/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 8378 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 8378 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 8378' -Direction Inbound -Protocol TCP -LocalPort 8378 -Action Block

ufw

sudo ufw deny 8378/udp

iptables

sudo iptables -A INPUT -p udp --dport 8378 -j DROP

nftables

sudo nft add rule inet filter input udp dport 8378 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block UDP 8378' -Direction Inbound -Protocol UDP -LocalPort 8378 -Action Block

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