Which port number must be open to accept SPICE or VNC connections from thin pcs or client machines?

Solution Unverified - Updated -

Issue

  • Which port number must be open to accept SPICE or VNC connections from thin pcs or client machines remotely from different network ?
  • When tried to install a vm with spice protocol. Upon clicking the vm console an error notice popup.

    Error connecting to Virtual Machine using Spice:
    The client could not connect to the remote computer.
    Remote connections might not be enabled or a network problem is preventing your connection
    

Environment

  • Red Hat Enterprise Virtualization (RHEV)
  • SPICE or VNC

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