Asset discovery and ICMP protocol

[Subba Rao <kleanchap () tanucoo com>]

I have a few questions on Vulnerability assessment.

How can network assets in an Enterprise network be discovered if the
ICMP is turned off on the network?

Does NMap depend on the ICMP protocol for mapping the network assets?

How do the commercial vulnerability scanners discover the assets?

Thank you in advance.

Subba Rao
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