[149760] in North American Network Operators' Group
Re: Common operational misconceptions
daemon@ATHENA.MIT.EDU (Chuck Anderson)
Wed Feb 15 17:37:23 2012
Date: Wed, 15 Feb 2012 17:36:15 -0500
From: Chuck Anderson <cra@WPI.EDU>
To: nanog@nanog.org
Mail-Followup-To: nanog@nanog.org
In-Reply-To: <20120215144715.18e65a55@w520.localdomain>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
ICMP is bad, and should be completely blocked for "security".
On Wed, Feb 15, 2012 at 02:47:15PM -0600, John Kristoff wrote:
> 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
