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Date:      Fri, 14 Jul 2023 14:48:50 -0700
From:      Doug Hardie <bc979@lafn.org>
To:        Aryeh Friedman <aryeh.friedman@gmail.com>
Cc:        FreeBSD Mailing List <freebsd-questions@freebsd.org>
Subject:   Re: OT: how to make a ssh/showmount usable with no internet
Message-ID:  <A858B01C-3268-4FEF-91B8-660920F0AE1B@sermon-archive.info>
In-Reply-To: <CAGBxaXkmGvK5Ak6vNWUiXbU%2B2ArRYad83ma-CArPO9KEzcODFg@mail.gmail.com>
References:  <CAGBxaXkmGvK5Ak6vNWUiXbU%2B2ArRYad83ma-CArPO9KEzcODFg@mail.gmail.com>

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> On Jul 14, 2023, at 07:28, Aryeh Friedman <aryeh.friedman@gmail.com> =
wrote:
>=20
> Due to some t-storms my internet is up and down like nuts today but
> the upshot is it seems that even local ssh requires a reverse DNS
> lookup and thus has a very long hang before connecting.   How can I
> prevent this behaviour
>=20
> Additional question: what additional steps do I need to make the
> system completely separable from the internet (I already ran into
> reverse DNS issues with showmount).   (I use NFS but not NIS for most
> stuff)

I run unbound (full version) on one of my servers.  All my systems are =
entered into it's database as local-data in local-zone.  All the systems =
use that system for DNS.  If the internet is down, local DNS still =
works.  I don't the RDNS entries and haven't needed them.  If they are =
necessary, unbound can do that also.

-- Doug




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