ZyXEL Communications MSC1000G Series, Руководство пользователя

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Chapter 4 Access Control List Screens
Management Switch Card User’s Guide
107
Figure 45
Packet Filter
The following table describes the labels in this screen.
Table 29
Packet Filter
LABEL DESCRIPTION
Slot
Port
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.
VPI VCI 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.
Load Click Load to display the port’s current settings.
Select the radio buttons of the types of packets to accept on the ADSL port.
Accept All Select Accept All to allow any traffic.
PPPoE Only 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.
Custom Select Custom and specify which types of packets listed below will be blocked.
PPPoE Filter
Out 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.
IP Filter Out Internet Protocol. The underlying protocol for routing packets on the Internet and other TCP/
IP-based networks.
ARP Filter Out 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 Filter
Out NetBIOS (Network Basic Input/Output System) are TCP or UDP packets that enable a
computer to find other computers.
DHCP Filter
Out 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.