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Port 17729 (ea)

IANA assigns port 17729 to ea: Eclipse Aviation.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
ea TCP Eclipse Aviation William Schmidt -
ea UDP Eclipse Aviation William Schmidt -

Registry dates for this port: registered 2006-03.

Check what is listening on port 17729

Linux: is anything listening on TCP 17729?
sudo ss -tlnp 'sport = :17729'
Linux: UDP 17729
sudo ss -ulnp 'sport = :17729'
Linux / macOS: which process owns the port
sudo lsof -nP -i :17729
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':17729 '
Windows (Command Prompt)
netstat -ano | findstr :17729
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 17729 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 17729
From Windows
Test-NetConnection HOST -Port 17729
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 17729

Block port 17729 in the firewall

ufw
sudo ufw deny 17729/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 17729 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 17729 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 17729' -Direction Inbound -Protocol TCP -LocalPort 17729 -Action Block
ufw
sudo ufw deny 17729/udp
iptables
sudo iptables -A INPUT -p udp --dport 17729 -j DROP
nftables
sudo nft add rule inet filter input udp dport 17729 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 17729' -Direction Inbound -Protocol UDP -LocalPort 17729 -Action Block

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