Symbol Technologies AP-5131 - Manual (Page 215)

Configuring Access Point Security 6-29
3. Configure the Rules field as required to allow or deny access to selected (enabled)
protocols.
Allow or Deny all
protocols, except Use the drop-down menu to select either Allow or Deny. The
selected setting applies to all protocols except those with enabled
checkboxes and any traffic that is added to the table. For example,
if the adoption rule is to Deny access to all protocols except those
listed, access is allowed only to those selected protocols.