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Port 914 (rift-lies)

IANA assigns port 914 to rift-lies: Routing in Fat Trees Link Information Element.

Well-known (system) port, 0-1023 UDP

Port 914 is normally used over UDP; the checker tests TCP only, so a "filtered" result does not mean the UDP service is down.

IANA assignment

Service nameProtoDescriptionAssigneeReference
rift-lies UDP Routing in Fat Trees Link Information Element IESG RFC 9692

Registry dates for this port: registered 2023-02-17, last modified 2024-06-07.

Check what is listening on port 914

Linux: UDP 914
sudo ss -ulnp 'sport = :914'
Linux / macOS: which process owns the port
sudo lsof -nP -i :914
Windows (Command Prompt)
netstat -ano | findstr :914
Windows (PowerShell)
Get-NetUDPEndpoint -LocalPort 914

Test it from outside

UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 914

Block port 914 in the firewall

ufw
sudo ufw deny 914/udp
iptables
sudo iptables -A INPUT -p udp --dport 914 -j DROP
nftables
sudo nft add rule inet filter input udp dport 914 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 914' -Direction Inbound -Protocol UDP -LocalPort 914 -Action Block

Related ports

912apex-mesh913apex-edge915rift-ties953rndc

All port numbers · Open port checker
Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.