IEEE Consumer Electronics Magazine - March/April 2023 - 4

Column: Security
Trust and Insecurity
Bob Frankston
IEEE Consumer Technology Society
PREFACE
& WHEN IWAS first advocating home networking
at Microsoft, we encountered a problem. The
existing systems and applications had implicitly
assumed that they were inside a safe environment
and did not consider threats from bad actors.
Early Windows systems had not yet provided the
file system with access control and other protections
though there were some attempts to have
separate logins to keep some settings separate.
The temporary solution was to take advantage
of the limitations of using a Network
Address Translator to share a single IP address.
That made internal systems invisible by default.
This problem became most visible when I
first got a broadband connection at home in
1995-I could look at the files on neighbors'
home computers because of the way NETBIOS
worked at the time and there were no filters.
I expected that when IPv6 became available,
it would use encryption by default and that
applications written for IPv6 would be written to
protect themselves from bad actors.
Alas, that did not happen. One reason is that
the firewall approach became institutionalized
as a feature. Part of this was a simplistic view of
security we see in Windows and its idea of
Digital Object Identifier 10.1109/MCE.2022.3231779
Date ofcurrent version 9 February 2023.
private versus public networks that assume a
static and unambiguous distinction between
good actors and bad actors. It does not help that
the systems try to guess whether you are on a
public/private network using heuristics. And
when it guesses wrong, you start to see perverse
and hard-to-diagnose failures.
Rather than making things simple, such
approaches make things more complicated and
bring back the limitations and complexities of
the physical topology. This is why, we have
SSIDs for Wi-Fi. They emulate the physical
boundary of the wired network, and the limitations
of the physical topology.
The idea of a security perimeter is very
tempting because it emulates the security perimeters-the
walls around our homes and the walls
that once surrounded villages. The village walls
are no longer the norm because the idea does
not work well in the real world.
PERIMETERS
When I first learned about ThreadÒ,a I was
excited because it is a distributed (or meshed)
protocol that builds on the readily available
802.15.4 radios used for Zigbee radios. Soon,
a
Thread Benefits (threadgroup.org). [Online]. Available: https://www.
threadgroup.org/What-is-Thread/Thread-Benefits
4
2162-2248 ß 2023 IEEE
Published by the IEEE Consumer Technology Society
IEEE Consumer Electronics Magazine
https://www.threadgroup.org/What-is-Thread/Thread-Benefits http://www.threadgroup.org https://www.threadgroup.org/What-is-Thread/Thread-Benefits

IEEE Consumer Electronics Magazine - March/April 2023

Table of Contents for the Digital Edition of IEEE Consumer Electronics Magazine - March/April 2023

Contents
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