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Port 41230 (z-wave-s)

IANA assigns port 41230 to z-wave-s: Z-Wave Protocol over SSL/TLS.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
z-wave-s TCP Z-Wave Protocol over SSL/TLS Sigma Designs 3 -
z-wave-s UDP Z-Wave Protocol over DTLS Sigma Designs 3 -

Registry dates for this port: registered 2015-06-26.

Check what is listening on port 41230

Linux: is anything listening on TCP 41230?
sudo ss -tlnp 'sport = :41230'
Linux: UDP 41230
sudo ss -ulnp 'sport = :41230'
Linux / macOS: which process owns the port
sudo lsof -nP -i :41230
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':41230 '
Windows (Command Prompt)
netstat -ano | findstr :41230
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 41230 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 41230
From Windows
Test-NetConnection HOST -Port 41230
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 41230

Block port 41230 in the firewall

ufw
sudo ufw deny 41230/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 41230 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 41230 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 41230' -Direction Inbound -Protocol TCP -LocalPort 41230 -Action Block
ufw
sudo ufw deny 41230/udp
iptables
sudo iptables -A INPUT -p udp --dport 41230 -j DROP
nftables
sudo nft add rule inet filter input udp dport 41230 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 41230' -Direction Inbound -Protocol UDP -LocalPort 41230 -Action Block

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