User's Manual

Table Of Contents
Menus and Parameters
2-53
BreezeACCESS 4.0 System Manual
Ethernet Broadcast Filtering (SU only)
Allows defining the Layer 2 (Ethernet) broadcast and multicast filtering
capability. The Ethernet Broadcast Filtering allows enhancing the
security of the system and saving bandwidth on the wireless media
through blocking protocols that are typically used in the customer’s
LAN but are not relevant for other customers (e.g. NetBios that is used
by Microsoft Network Neighborhood). Enabling this feature blocks
Ethernet broadcasts and multicasts (the I/G bit at the destination
address is set to 1). This feature should not be enabled when there is a
router behind the SU.
The Ethernet Broadcasting Filtering menu allows viewing and setting the
following parameters:
! Filter Options – Defines the Ethernet broadcast filtering
functionality of the unit. The following options are available:
" Disable: No Ethernet broadcast filtering
" From Ethernet Only: Filter broadcast messages received
from the Ethernet port
" From WLAN Only: Filter broadcast messages received from
the wireless link port
" Both From Ethernet & WLAN: Filter broadcast messages
received from both the Ethernet port and the wireless link
port
The default selection is Disable.
! DHCP Broadcast Override Filter – Enables broadcasting of DHCP
(Dynamic Host Configuration Protocol) messages. This is
independent of the filtering option selected in Filter Options above,
meaning that even if according to the selected filtering option,
broadcast messages should be filtered, DHCP broadcasts will be
transmitted if the Enable DHCP Broadcast option is selected.
Available selections are:
" Disable– DHCP Broadcast messages will be filtered or
transmitted according to the general filtering criteria set by
the selected value of the Filter Options parameter.
" Enable– DHCP Broadcast messages will be transmitted
regardless of the selected value of the Filter Options
parameter.
The default selection is Disable.
! PPPoE Broadcast Override Filter – Enables broadcasting of PPPoE
(Point-to-Point Protocol over Ethernet) messages. This is
independent of the filtering option selected in Filter Options above,
meaning that even if according to the selected filtering option
broadcast messages should be filtered, PPPoE broadcasts are
transmitted if the Enable PPPoE Broadcast option is selected.
Available selections are: