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Port 5058 (locus-disc)

IANA assigns port 5058 to locus-disc: Locus Discovery.

Registered (user) port, 1024-49151 UDP

Port 5058 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
locus-disc UDP Locus Discovery Alan King -

Registry dates for this port: registered 2009-08-13.

Check what is listening on port 5058

Linux: UDP 5058
sudo ss -ulnp 'sport = :5058'
Linux / macOS: which process owns the port
sudo lsof -nP -i :5058
Windows (Command Prompt)
netstat -ano | findstr :5058
Windows (PowerShell)
Get-NetUDPEndpoint -LocalPort 5058

Test it from outside

UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 5058

Block port 5058 in the firewall

ufw
sudo ufw deny 5058/udp
iptables
sudo iptables -A INPUT -p udp --dport 5058 -j DROP
nftables
sudo nft add rule inet filter input udp dport 5058 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 5058' -Direction Inbound -Protocol UDP -LocalPort 5058 -Action Block

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