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// Other services

Port 6936: XenSource Management Service

Port 6936 is assigned by IANA to xsmsvc (XenSource Management Service).

6936

How xsmsvc works

Other services
client:6936xsmsvcresponse client:6936xsmsvcresponse

The client sends a request to port 6936 and the xsmsvc service answers.

Transport
TCP · UDP
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 6936 dangerous?

We have no specific security note for port 6936. 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 6936

ServicePortTransportDescriptionReferenceUpdated
xsmsvc 6936 TCP, UDP XenSource Management Service - 2006-06

// source: IANA service name and port number registry

03 Check it

Which program uses port 6936, and is it reachable?

Linux

sudo ss -ltnup 'sport = :6936'      # process listening on 6936
sudo lsof -nP -i :6936

macOS

sudo lsof -nP -i :6936

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 6936 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 6936
netstat -ano | findstr :6936

From another machine

nmap -p 6936 -sV <host>
sudo nmap -sU -p 6936 <host>
nc -zv <host> 6936

Block it in the firewall

sudo ufw deny 6936/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 6936" -Direction Inbound -LocalPort 6936 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 6936 used for?

Port 6936 is assigned by IANA to xsmsvc (XenSource Management Service).

Is port 6936 TCP or UDP?

Port 6936 is registered for TCP and UDP.

Is it safe to open port 6936?

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 6936 is open?

On Linux run "ss -ltnup 'sport = :6936'", on macOS "lsof -nP -i :6936", and on Windows "netstat -ano | findstr :6936" to see the local process. From another machine, "nmap -p 6936 <host>" shows whether it is reachable.

05 Related
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