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Port 5105 (hughes-ap)

IANA assigns port 5105 to hughes-ap: Hughes Association Protocol.

Registered (user) port, 1024-49151 UDP

Port 5105 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
hughes-ap UDP Hughes Association Protocol Varun Santosh -

Registry dates for this port: registered 2010-10-20.

Check what is listening on port 5105

Linux: UDP 5105
sudo ss -ulnp 'sport = :5105'
Linux / macOS: which process owns the port
sudo lsof -nP -i :5105
Windows (Command Prompt)
netstat -ano | findstr :5105
Windows (PowerShell)
Get-NetUDPEndpoint -LocalPort 5105

Test it from outside

UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 5105

Block port 5105 in the firewall

ufw
sudo ufw deny 5105/udp
iptables
sudo iptables -A INPUT -p udp --dport 5105 -j DROP
nftables
sudo nft add rule inet filter input udp dport 5105 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 5105' -Direction Inbound -Protocol UDP -LocalPort 5105 -Action Block

Related ports

5103actifio-c2c5104tinymessage5106actifioudsagent5107actifioreplic

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