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// Other services

Port 41230: Z-Wave Protocol over SSL/TLS

Port 41230 is assigned by IANA to z-wave-s (Z-Wave Protocol over SSL/TLS).

41230

How z-wave-s works

Other services
client:41230#%&@!x9response? client:41230#%&@!x9response?

The client sends a request to port 41230 and the z-wave-s service answers. Everything is encrypted: someone on the path only sees unreadable bytes.

Transport
TCP · UDP
Exposure risk
not rated depends on the program listening
Encryption
EncryptedTLS or built-in crypto
IANA status
Assigned1 registered service
Range
Registered (1024-49151)
Category
Other services
01 Security

Is port 41230 dangerous?

We have no specific security note for port 41230. Its risk depends on the program actually listening on it. General advice for other services services:

  • Close the port if nothing on the host needs it.
  • Identify the process that listens on it (commands below) before opening it in a firewall.
  • Expose a service only to the networks that use it.
02 Registry

IANA registry entries for port 41230

ServicePortTransportDescriptionReferenceUpdated
z-wave-s 41230 TCP, UDP Z-Wave Protocol over SSL/TLS - 2015-06-26

// source: IANA service name and port number registry

03 Check it

Which program uses port 41230, and is it reachable?

Linux

sudo ss -ltnup 'sport = :41230'      # process listening on 41230
sudo lsof -nP -i :41230

macOS

sudo lsof -nP -i :41230

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 41230 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 41230
netstat -ano | findstr :41230

From another machine

nmap -p 41230 -sV <host>
sudo nmap -sU -p 41230 <host>
nc -zv <host> 41230

Block it in the firewall

sudo ufw deny 41230/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 41230" -Direction Inbound -LocalPort 41230 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 41230 used for?

Port 41230 is assigned by IANA to z-wave-s (Z-Wave Protocol over SSL/TLS).

Is port 41230 TCP or UDP?

Port 41230 is registered for TCP and UDP.

Is it safe to open port 41230?

It depends on the program that listens on it. Open it only for a service you know and only to the networks that need it. Close the port if nothing on the host needs it.

How do I check if port 41230 is open?

On Linux run "ss -ltnup 'sport = :41230'", on macOS "lsof -nP -i :41230", and on Windows "netstat -ano | findstr :41230" to see the local process. From another machine, "nmap -p 41230 <host>" shows whether it is reachable.

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