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// Other services

Port 17729: Eclipse Aviation

Port 17729 is assigned by IANA to ea (Eclipse Aviation).

17729

How ea works

Other services
client:17729earesponse client:17729earesponse

The client sends a request to port 17729 and the ea service answers.

Transport
TCP · UDP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned1 registered service
Range
Registered (1024-49151)
Category
Other services
01 Security

Is port 17729 dangerous?

We have no specific security note for port 17729. 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 17729

ServicePortTransportDescriptionReferenceUpdated
ea 17729 TCP, UDP Eclipse Aviation - 2006-03

// source: IANA service name and port number registry

03 Check it

Which program uses port 17729, and is it reachable?

Linux

sudo ss -ltnup 'sport = :17729'      # process listening on 17729
sudo lsof -nP -i :17729

macOS

sudo lsof -nP -i :17729

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 17729 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 17729
netstat -ano | findstr :17729

From another machine

nmap -p 17729 -sV <host>
sudo nmap -sU -p 17729 <host>
nc -zv <host> 17729

Block it in the firewall

sudo ufw deny 17729/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 17729" -Direction Inbound -LocalPort 17729 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 17729 used for?

Port 17729 is assigned by IANA to ea (Eclipse Aviation).

Is port 17729 TCP or UDP?

Port 17729 is registered for TCP and UDP.

Is it safe to open port 17729?

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 17729 is open?

On Linux run "ss -ltnup 'sport = :17729'", on macOS "lsof -nP -i :17729", and on Windows "netstat -ano | findstr :17729" to see the local process. From another machine, "nmap -p 17729 <host>" shows whether it is reachable.

05 Related
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