HTTPfy

Port 1682 (lanyon-lantern)

IANA assigns port 1682 to lanyon-lantern.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
lanyon-lantern TCP lanyon-lantern Robin Lewis -
lanyon-lantern UDP lanyon-lantern Robin Lewis -

Check what is listening on port 1682

Linux: is anything listening on TCP 1682?
sudo ss -tlnp 'sport = :1682'
Linux: UDP 1682
sudo ss -ulnp 'sport = :1682'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1682
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1682 '
Windows (Command Prompt)
netstat -ano | findstr :1682
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1682 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1682
From Windows
Test-NetConnection HOST -Port 1682
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1682

Block port 1682 in the firewall

ufw
sudo ufw deny 1682/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1682 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1682 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1682' -Direction Inbound -Protocol TCP -LocalPort 1682 -Action Block
ufw
sudo ufw deny 1682/udp
iptables
sudo iptables -A INPUT -p udp --dport 1682 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1682 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1682' -Direction Inbound -Protocol UDP -LocalPort 1682 -Action Block

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