On Sun, 2016-01-31 at 12:57 -0500, bruce wrote:
> As far as I can tell, most of the sites say you need to already have
> a
> "name" from a domain name provider. That can't be right, can it!! One
> can have a dns process internal to an org, providing dns names to
> machines all over the place. Granted, those machines/names might be
> internal/private.

If it's wholly internal (i.e. any lookups are from machines within the
network), you don't need an globally recognized name. You can use
/etc/hosts or dnsmasq.

> So, does one need an "actual" real name for an externally facing
> server in order to process the DNS so one can do a "ssh t...@foo.com"
> or can you use something like "ssh t...@foo.example.com"

Even if your home network is hidden behind an ISP NAT router, getting
your own domain is quite simple. Providers such as DynDNS (www.dyn.com)
or NO-IP (www.noip.com) offer DNS registration (either paid or free
with restrictions). You also need a dynamic DNS client to keep them up 
to date, but most modern routers can do that for you.

poc
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