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Port 8322 (garmin-marine)

IANA assigns port 8322 to garmin-marine: Garmin Marine.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
garmin-marine TCP Garmin Marine Garmin International Inc -
garmin-marine UDP Garmin Marine Garmin International Inc -

Registry dates for this port: registered 2015-07-23.

Check what is listening on port 8322

Linux: is anything listening on TCP 8322?
sudo ss -tlnp 'sport = :8322'
Linux: UDP 8322
sudo ss -ulnp 'sport = :8322'
Linux / macOS: which process owns the port
sudo lsof -nP -i :8322
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':8322 '
Windows (Command Prompt)
netstat -ano | findstr :8322
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 8322 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 8322
From Windows
Test-NetConnection HOST -Port 8322
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 8322

Block port 8322 in the firewall

ufw
sudo ufw deny 8322/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 8322 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 8322 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 8322' -Direction Inbound -Protocol TCP -LocalPort 8322 -Action Block
ufw
sudo ufw deny 8322/udp
iptables
sudo iptables -A INPUT -p udp --dport 8322 -j DROP
nftables
sudo nft add rule inet filter input udp dport 8322 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 8322' -Direction Inbound -Protocol UDP -LocalPort 8322 -Action Block

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