Clarification on port usage, add protocol-specific ports

[wonderland]

Page URL

https://docs.netapp.com/us-en/trident/trident-reference/ports.html

Page title

Astra Trident ports

Summary

The current page is unclear on where these ports are used. I suggest adding clarification that these are for communication of the Trident pods itself, eg.

The following ports are used by the different Trident pods for communication

In addition (and this is what most users will likely need to request firewall changes) we should probably list the ports used by the different protocols that Trident supports, e.g.

`Trident uses port 443 to communicate with the API endpoint of an Ontap or FSxN system. In addition, the standard ports of the selected storage protocol are required:

iSCSI uses port 3260
NFSv4 uses port 2049
NSFv3 uses ports 111 (portmapper), 635 (mountd), 2049 (NFS), 4045 (NLM), 4046 (NSM) and 4049 (rquota)
NVMe/TCP uses ports 8009 (discovery) and 4420 (data)
`

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[netapp-aruldeepa]

Hi @wonderland,

Thank you for your feedback.
We'll work with our teams and update the document.

Regards,
Deepa