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Re: Telnet and FTP to Historic

Christian Huitema <huitema@huitema.net> Thu, 03 December 2020 07:50 UTC

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Subject: Re: Telnet and FTP to Historic
To: Joe Touch <touch@strayalpha.com>
Cc: Mark Andrews <marka@isc.org>, Stephen Farrell <stephen.farrell@cs.tcd.ie>, "John C. Klensin" <john-ietf@jck.com>, Michael Richardson <mcr+ietf@sandelman.ca>, Carsten Bormann <cabo@tzi.org>, Phillip Hallam-Baker <phill@hallambaker.com>, IETF Discussion Mailing List <ietf@ietf.org>
References: <c9483300-b1b9-0244-542e-1071457da567@huitema.net> <4DC0C34E-FF78-4341-94E3-684B7EF16CB3@strayalpha.com>
From: Christian Huitema <huitema@huitema.net>
Message-ID: <51d208a3-4cae-b69a-6ecc-d15f48c66b44@huitema.net>
Date: Wed, 02 Dec 2020 23:44:49 -0800
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On 12/2/2020 11:22 PM, Joe Touch wrote:
>
>> On Dec 2, 2020, at 10:47 PM, Christian Huitema <huitema@huitema.net> wrote:
>>
>> Mark, you had me until "home network". Because most home networks are in fact *not* more secure than the open Internet
> Not that I like NATs, but they do afford protection beyond being on the open Internet simply by lacking incoming port mapping.

That's the firewall illusion. It is shattered if someone inside the wall 
falls for a phishing attack, or clicks on the wrong attachment, or 
downloads the wrong program. At which point all these unsafe programs 
that are used "only behind the firewall" become nice avenues for quickly 
spreading the attack much farther than the initial failure. See numerous 
examples of ransomware attacks against small businesses, schools, etc.

-- Christian Huitema

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