ICMP

> WAX204 [...]

   https://community.netgear.com/t5/x/bd-p/business-wireless-for-business

   Firmware version?  Connected to what?  Configured as a router or
wireless access point?

> I have the default setup with "Wireless1" and I can't ping anything
> inside my wireless/wired network. [...]

   "can't" is not a useful problem description.  It does not say what
you did.  It does not say what happened when you did it.  As usual,
showing actual actions (commands) with their actual results (error
messages, LED indicators, ...) can be more helpful than vague
descriptions or interpretations.

> [...] Is this one of the hidden security features that makes our life
> more miserable when trying to debug something?

   Define "hidden".  Does your "hidden" include "documented in the User
Manual"?

   Did you consider trying this radical concept (which works for some
people):

      https://en.wikipedia.org/wiki/RTFM

   I've never touched one of these units, so I know nothing, but a quick
look at the WAX204 User Manual found some potentially interesting
material.

   That manual is a 246-page document.  Did you expect _all_ of that
material to be intuitive/obvious?

   Visit http://netgear.com/support , put in your model number, and look
for Documentation.  Get the User Manual (at least).  Read.  Look for
"isolation"?

   The existence of a section title like "Manage client isolation for
clients of the Wireless2 or Wireless3 network" suggests (to me, at
least) that "Wireless1" might be different.  Further reading might not
hurt, either.