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Port 5674 (hyperscsi-port)

IANA assigns port 5674 to hyperscsi-port: HyperSCSI Port.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
hyperscsi-port TCP HyperSCSI Port Data Storage Institu -
hyperscsi-port UDP HyperSCSI Port Data Storage Institu -

Registry dates for this port: registered 2002-02.

Check what is listening on port 5674

Linux: is anything listening on TCP 5674?
sudo ss -tlnp 'sport = :5674'
Linux: UDP 5674
sudo ss -ulnp 'sport = :5674'
Linux / macOS: which process owns the port
sudo lsof -nP -i :5674
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':5674 '
Windows (Command Prompt)
netstat -ano | findstr :5674
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 5674 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 5674
From Windows
Test-NetConnection HOST -Port 5674
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 5674

Block port 5674 in the firewall

ufw
sudo ufw deny 5674/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 5674 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 5674 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 5674' -Direction Inbound -Protocol TCP -LocalPort 5674 -Action Block
ufw
sudo ufw deny 5674/udp
iptables
sudo iptables -A INPUT -p udp --dport 5674 -j DROP
nftables
sudo nft add rule inet filter input udp dport 5674 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 5674' -Direction Inbound -Protocol UDP -LocalPort 5674 -Action Block

Related ports

5672AMQP (RabbitMQ)5673jms5675v5ua5676raadmin

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