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// Other services

Port 11104: NetApp Intercluster Management

Port 11104 is assigned by IANA to netapp-icmgmt (NetApp Intercluster Management).

11104

How netapp-icmgmt works

Other services
client:11104netapp-icmgmtresponse client:11104netapp-icmgmtresponse

The client sends a request to port 11104 and the netapp-icmgmt 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
Other services
01 Security

Is port 11104 dangerous?

We have no specific security note for port 11104. Its risk depends on the program actually listening on it. General advice for other services services:

  • Close the port if nothing on the host needs it.
  • Identify the process that listens on it (commands below) before opening it in a firewall.
  • Expose a service only to the networks that use it.
02 Registry

IANA registry entries for port 11104

ServicePortTransportDescriptionReferenceUpdated
netapp-icmgmt 11104 TCP NetApp Intercluster Management - 2010-07-06
-11104-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 11104, and is it reachable?

Linux

sudo ss -ltnup 'sport = :11104'      # process listening on 11104
sudo lsof -nP -i :11104

macOS

sudo lsof -nP -i :11104

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 11104 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 11104
netstat -ano | findstr :11104

From another machine

nmap -p 11104 -sV <host>
nc -zv <host> 11104

Block it in the firewall

sudo ufw deny 11104/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 11104" -Direction Inbound -LocalPort 11104 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 11104 used for?

Port 11104 is assigned by IANA to netapp-icmgmt (NetApp Intercluster Management).

Is port 11104 TCP or UDP?

Port 11104 is registered for TCP.

Is it safe to open port 11104?

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. Close the port if nothing on the host needs it.

How do I check if port 11104 is open?

On Linux run "ss -ltnup 'sport = :11104'", on macOS "lsof -nP -i :11104", and on Windows "netstat -ano | findstr :11104" to see the local process. From another machine, "nmap -p 11104 <host>" shows whether it is reachable.

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