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Buy other stuff at Amazon.com...
Or iMac 5K or iMac Pro?
Consult with Lloyd ASAP before buying!
System configuration for CPU, GPU, memory, SSD, backup, RAID, optimizing performance, workflow.
For YOUR optimal workflow
Avoid costly mistakes in throwing money at the problem for less performance and/or buying the wrong machine for your own needs!
Remote screen sharing available for RAID, software configuration, etc.
More about 2019 Mac Pro vs iMac 5K vs iMac Pro...
Use a Bastion Server
This is an advanced topic.
A bastion server is an extra machine whose purpose is to allow access to needed services (such as ssh). Typically, external internet access is directed to the bastion server (e.g., ssh), and then the bastion server can then reach a more sensitive server (with another password or other security measures).
More sensitive machines such as a web or email server can be configured to allow access (or not) only from the bastion server, thus providing two-level security, with one password required for access to the bastion server, and yet anothr password required to acces the main server.
Up to 65% better pricing than Apple
Lloyd recommends 32GB RDIMM modules for most users (more expensive LRDIMMS are for 512GB or more).