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Re: Dired command on same host

From: Michael Albinus
Subject: Re: Dired command on same host
Date: Wed, 05 Jan 2022 12:46:49 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux)

Yuri Khan <> writes:

Hi Yuri,

>> And even this isn't bullet-proof. Due to network configuration, hostB
>> could resolve to different addresses on my local machine and on hostA,
>> although it is still the same machine.
> Additionally, the reverse is also possible: when accessed
> from local machine and when accessed from hostA could be
> two completely different hostsB.
> A somewhat reliable way to detect if two jump paths resolve to the
> same host would be:
> 1. Through one path, perform some (small) file system modification.
> Like, create a uniquely named file at a known location, and write some
> unique content.
> 2. Through the other path, observe that modification. If successful,
> assume identity.
> (Various TLS certificate issuers do this to check that the user who
> requests a certificate for a domain name actually controls the host
> that the domain name resolves to.)

Might be feasible, thanks!

Best regards, Michael.

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