I want to move all our physical scanners to virtual scanners and maintain the same network settings. Could anyone let me in brief about the process to be followed?
You'll first need to ensure that you have licenses for virtual scanner appliances. If you're not sure, talk to your TAM to get this information.
For replacing the scanners there's not much that needs to be done, except that you'll need to assign the same IP addresses (or addresses from the same subnet as your physical scanner) to your virtual scanner.
They'll need outbound connectivity on TCP 443 towards the Qualys cloud platform, this is the same as your physical scanners.
Here's the virtual scanner config guide: https://www.qualys.com/docs/qualys-virtual-scanner-appliance-user-guide.pdf
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