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// Other services

Port 4319: Sentyron SkyTale encrypted communication

Port 4319 is assigned by IANA to skytale (Sentyron SkyTale encrypted communication).

4319

How skytale works

Other services
client:4319#%&@!x9response? client:4319#%&@!x9response?

The client sends a request to port 4319 and the skytale 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 4319 dangerous?

We have no specific security note for port 4319. 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 4319

ServicePortTransportDescriptionReferenceUpdated
skytale 4319 TCP, UDP Sentyron SkyTale encrypted communication - 2025-10-30

// source: IANA service name and port number registry

03 Check it

Which program uses port 4319, and is it reachable?

Linux

sudo ss -ltnup 'sport = :4319'      # process listening on 4319
sudo lsof -nP -i :4319

macOS

sudo lsof -nP -i :4319

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 4319 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 4319
netstat -ano | findstr :4319

From another machine

nmap -p 4319 -sV <host>
sudo nmap -sU -p 4319 <host>
nc -zv <host> 4319

Block it in the firewall

sudo ufw deny 4319/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 4319" -Direction Inbound -LocalPort 4319 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 4319 used for?

Port 4319 is assigned by IANA to skytale (Sentyron SkyTale encrypted communication).

Is port 4319 TCP or UDP?

Port 4319 is registered for TCP and UDP.

Is it safe to open port 4319?

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 4319 is open?

On Linux run "ss -ltnup 'sport = :4319'", on macOS "lsof -nP -i :4319", and on Windows "netstat -ano | findstr :4319" to see the local process. From another machine, "nmap -p 4319 <host>" shows whether it is reachable.

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