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// Network services

Port 8009: NVMe over Fabrics Discovery Service

Port 8009 is assigned by IANA to nvme-disc (NVMe over Fabrics Discovery Service).

8009

How nvme-disc works

Network services
client:8009nvme-discresponse client:8009nvme-discresponse

The client sends a request to port 8009 and the nvme-disc service answers.

Transport
TCP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned1 registered service
Range
Registered (1024-49151)
Category
Network services
01 Security

Is port 8009 dangerous?

We have no specific security note for port 8009. Its risk depends on the program actually listening on it. General advice for network services services:

  • Answer only the networks that need the service (no open resolvers, relays or reflectors).
  • UDP services can be abused for DDoS amplification: rate-limit or block them at the edge.
  • Disable legacy test services that have no use in production.
02 Registry

IANA registry entries for port 8009

ServicePortTransportDescriptionReferenceUpdated
nvme-disc 8009 TCP NVMe over Fabrics Discovery Service - 2018-03-27
-8009-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 8009, and is it reachable?

Linux

sudo ss -ltnup 'sport = :8009'      # process listening on 8009
sudo lsof -nP -i :8009

macOS

sudo lsof -nP -i :8009

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 8009 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 8009
netstat -ano | findstr :8009

From another machine

nmap -p 8009 -sV <host>
nc -zv <host> 8009

Block it in the firewall

sudo ufw deny 8009/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 8009" -Direction Inbound -LocalPort 8009 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 8009 used for?

Port 8009 is assigned by IANA to nvme-disc (NVMe over Fabrics Discovery Service).

Is port 8009 TCP or UDP?

Port 8009 is registered for TCP.

Is it safe to open port 8009?

It depends on the program that listens on it. Open it only for a service you know and only to the networks that need it. Answer only the networks that need the service (no open resolvers, relays or reflectors).

How do I check if port 8009 is open?

On Linux run "ss -ltnup 'sport = :8009'", on macOS "lsof -nP -i :8009", and on Windows "netstat -ano | findstr :8009" to see the local process. From another machine, "nmap -p 8009 <host>" shows whether it is reachable.

05 Related
:53 DNS tcp · udp · moderate risk :135 MS RPC tcp · udp · high risk :123 NTP udp · tcp · moderate risk :67 DHCP server udp · tcp · moderate risk :111 rpcbind tcp · udp · high risk :9100 Raw printing (JetDirect) tcp · udp · high risk :631 IPP / CUPS tcp · udp · high risk :5353 mDNS udp · tcp · moderate risk

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