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// Other services

Port 11623: EMC XtremSW distributed config

Port 11623 is assigned by IANA to emc-xsw-dconfig (EMC XtremSW distributed config).

11623

How emc-xsw-dconfig works

Other services
client:11623emc-xsw-dconfigresponse client:11623emc-xsw-dconfigresponse

The client sends a request to port 11623 and the emc-xsw-dconfig 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 11623 dangerous?

We have no specific security note for port 11623. 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 11623

ServicePortTransportDescriptionReferenceUpdated
emc-xsw-dconfig 11623 TCP EMC XtremSW distributed config - 2013-09-18
-11623-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 11623, and is it reachable?

Linux

sudo ss -ltnup 'sport = :11623'      # process listening on 11623
sudo lsof -nP -i :11623

macOS

sudo lsof -nP -i :11623

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 11623 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 11623
netstat -ano | findstr :11623

From another machine

nmap -p 11623 -sV <host>
nc -zv <host> 11623

Block it in the firewall

sudo ufw deny 11623/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 11623" -Direction Inbound -LocalPort 11623 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 11623 used for?

Port 11623 is assigned by IANA to emc-xsw-dconfig (EMC XtremSW distributed config).

Is port 11623 TCP or UDP?

Port 11623 is registered for TCP.

Is it safe to open port 11623?

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 11623 is open?

On Linux run "ss -ltnup 'sport = :11623'", on macOS "lsof -nP -i :11623", and on Windows "netstat -ano | findstr :11623" to see the local process. From another machine, "nmap -p 11623 <host>" shows whether it is reachable.

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