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Port 14414 (ca-web-update)

IANA assigns port 14414 to ca-web-update: CA eTrust Web Update Service.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
ca-web-update TCP CA eTrust Web Update Service Robert Ciochon -
ca-web-update UDP CA eTrust Web Update Service Robert Ciochon -

Registry dates for this port: registered 2006-08.

Check what is listening on port 14414

Linux: is anything listening on TCP 14414?
sudo ss -tlnp 'sport = :14414'
Linux: UDP 14414
sudo ss -ulnp 'sport = :14414'
Linux / macOS: which process owns the port
sudo lsof -nP -i :14414
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':14414 '
Windows (Command Prompt)
netstat -ano | findstr :14414
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 14414 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 14414
From Windows
Test-NetConnection HOST -Port 14414
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 14414

Block port 14414 in the firewall

ufw
sudo ufw deny 14414/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 14414 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 14414 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 14414' -Direction Inbound -Protocol TCP -LocalPort 14414 -Action Block
ufw
sudo ufw deny 14414/udp
iptables
sudo iptables -A INPUT -p udp --dport 14414 -j DROP
nftables
sudo nft add rule inet filter input udp dport 14414 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 14414' -Direction Inbound -Protocol UDP -LocalPort 14414 -Action Block

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