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Port 38002 (cresco-control, crescoctrl-disc)

IANA assigns port 38002 to cresco-control, crescoctrl-disc: Cresco Controller.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
cresco-control TCP Cresco Controller UofK -
crescoctrl-disc UDP Cresco Controller Discovery UofK -

Registry dates for this port: registered 2014-11-21.

Check what is listening on port 38002

Linux: is anything listening on TCP 38002?
sudo ss -tlnp 'sport = :38002'
Linux: UDP 38002
sudo ss -ulnp 'sport = :38002'
Linux / macOS: which process owns the port
sudo lsof -nP -i :38002
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':38002 '
Windows (Command Prompt)
netstat -ano | findstr :38002
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 38002 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 38002
From Windows
Test-NetConnection HOST -Port 38002
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 38002

Block port 38002 in the firewall

ufw
sudo ufw deny 38002/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 38002 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 38002 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 38002' -Direction Inbound -Protocol TCP -LocalPort 38002 -Action Block
ufw
sudo ufw deny 38002/udp
iptables
sudo iptables -A INPUT -p udp --dport 38002 -j DROP
nftables
sudo nft add rule inet filter input udp dport 38002 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 38002' -Direction Inbound -Protocol UDP -LocalPort 38002 -Action Block

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