In-band, out-of-band: Difference between revisions

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In the contrast between in-band and out-of-band,
In the contrast between in-band and out-of-band,


: In-band tends to mean "multiple types of communication over the same medium"
: In-band tends to mean "communication included over the same medium"
:: e.g. acoustic telephone systems using specific tones / tone combinations (over the same line) to signify special conditions, alongside voice
:: e.g. acoustic telephone systems using specific tones / tone combinations (over the same line) to signify special conditions, alongside voice


: Out-of-band is activity outside the main channel.
: Out-of-band is activity outside the main channel.
:: often meaning another channel of communication, making for a more complex and more costly system, but often more reliable
:: often meaning another channel of communication
:: these are often more complex and more costly, but often also more reliable




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In other engineering, it is often a little more metaphorical, meaning "outside of the primary communication"
In other engineering, it is often a little more metaphorical, meaning "outside of the primary communication"


A website using authentication via something like SMS i
 
A website doing [[MFA]] via something like SMS is out of band.
 





Latest revision as of 17:52, 27 February 2024