On 2019-12-31, Lynn McGuire wrote:
We use peer to peer networking, no domain. We are double NATted for
security. No IPv6, yet.

NAT is not a security technology. (It was actually a grotesque hack that
was never meant to become a permanent fixture, but that's another story.)

A huge number of threats are delivered via email, compromised web sites,
and compromised advertising streams. NAT will not help with this and for
that matter neither will most router firewalls. Antivirus of course
is not 100% effective either, and an OS with unpatched security flaws
is going to be more vulnerable. It just seems like an unacceptable risk
for a business.

Currently I unbind IPV6 from active network adapters on networks where
it is not needed.

I was a beta tester for Windows 10. I verified that our software worked
and then nuked from orbit, reformatting and reinstalling Windows 7 x64
Pro. Just too different.

Windows 10 is a PITA, no argument there. Windows 7 was a lot easier to
deal with and wasn't so insistent on drawing you into Microsoft's "cloud"
at every turn. But without security updates, as I said, not a good platform
for business use.

You should probably test your software againt a current Windows 10 release
before migrating en masse since there have been a lot of changes since
it was in beta test. You may also have older commercial applications
that won't be compatible such as Adobe and Quickbooks products. All that
needs to be sorted out ahead of time.

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