Description of problem:

802.11 networks can be either "restricted" or "open".  Not only is
"restricted" a security nightmare (see URL for archive link about the
badness of Shared Key Authentication), there is no standard way to set
"open" or "restricted" in the current ifup-wireless.  Additionally, it
was mentioned that different drivers/versions may default to a
different security mode if it is not explicitly set.  I suggest there
at least be a standard way to set this security mode, and have it
default to "open".

Version-Release number of selected component (if applicable):

8.03-1

Expected results:

Implement this:

SECURITYMODE="open"
or
SECURITYMODE="restricted"

to cause ifup-wireless to invoke:

iwconfig $DEVICE enc $SECURITYMODE

Additional info:

It is possible to achieve this effect with this option:

IWCONFIG="enc open"

but it would be nice to not have to rely upon this, so that the
setting is more easily exposed in a GUI such as s-c-network, and used
by NetworkManager.