ZyXEL Communications MSC1000G User Manual page 107

Figure 45 Packet Filter
The following table describes the labels in this screen.
Table 29 Packet Filter
LABEL
Slot
Port
VPI VCI
Load
Select the radio buttons of the types of packets to accept on the ADSL port.
Accept All
PPPoE Only
Custom
PPPoE Filter
Out
IP Filter Out
ARP Filter Out
NetBIOS Filter
Out
DHCP Filter
Out
Management Switch Card User's Guide
DESCRIPTION
Use the drop-down list boxes to select a DSL port or Gigabit Ethernet port on a line card for
which you wish to configure packet type filtering.
For a line card that supports packet filtering on a per-PVC basis, type the Virtual Path
Identifier and Virtual Circuit Identifier for a channel on the port.
Click Load to display the port's current settings.
Select Accept All to allow any traffic.
Select PPPoE Only to allow only PPPoE traffic. This will gray out the check boxes for other
packet types and the switch will drop any non-PPPoE packets.
Select Custom and specify which types of packets listed below will be blocked.
Point-to-Point Protocol over Ethernet relies on PPP and Ethernet. It is a specification for
connecting the users on an Ethernet to the Internet through a common broadband medium,
such as a single DSL line, wireless device or cable modem.
Internet Protocol. The underlying protocol for routing packets on the Internet and other TCP/
IP-based networks.
Address Resolution Protocol is a protocol for mapping an Internet Protocol address (IP
address) to a physical computer address that is recognized in the local network.
NetBIOS (Network Basic Input/Output System) are TCP or UDP packets that enable a
computer to find other computers.
Dynamic Host Configuration Protocol (DHCP) automatically assigns IP addresses to clients
when they log on. DHCP centralizes IP address management on central computers that run
the DHCP server program. DHCP leases addresses, for a period of time, which means that
past addresses are "recycled" and made available for future reassignment to other systems.
Chapter 4 Access Control List Screens
107