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Port 8313 (hub-open-net)

IANA assigns port 8313 to hub-open-net: Hub Open Network.

Registered (user) port, 1024-49151 TCP

IANA assignment

Service nameProtoDescriptionAssigneeReference
hub-open-net TCP Hub Open Network
Defined TXT keys: _hub._tcp.host.example.com Grexie -

Registry dates for this port: registered 2012-06-13.

Check what is listening on port 8313

Linux: is anything listening on TCP 8313?
sudo ss -tlnp 'sport = :8313'
Linux / macOS: which process owns the port
sudo lsof -nP -i :8313
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':8313 '
Windows (Command Prompt)
netstat -ano | findstr :8313
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 8313 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 8313
From Windows
Test-NetConnection HOST -Port 8313

Block port 8313 in the firewall

ufw
sudo ufw deny 8313/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 8313 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 8313 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 8313' -Direction Inbound -Protocol TCP -LocalPort 8313 -Action Block

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