Common operational misconceptions

Keegan Holley keegan.holley at
Thu Feb 16 21:18:44 UTC 2012

Alot of people are unclear on how hard it is for someone to sniff internet
traffic if the aren't physically located at or near one of the endpoints
IE: connected to the  same access point or same switch.

2012/2/15 John Kristoff <jtk at>

> Hi friends,
> As some of you may know, I occasionally teach networking to college
> students and I frequently encounter misconceptions about some aspect
> of networking that can take a fair amount of effort to correct.
> For instance, a topic that has come up on this list before is how the
> inappropriate use of classful terminology is rampant among students,
> books and often other teachers.  Furthermore, the terminology isn't even
> always used correctly in the original context of classful addressing.
> I have a handful of common misconceptions that I'd put on a top 10 list,
> but I'd like to solicit from this community what it considers to be the
> most annoying and common operational misconceptions future operators
> often come at you with.
> I'd prefer replies off-list and can summarize back to the list if
> there is interest.
> John

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