ZyXEL Communications AAM1212-51, Руководство пользователя, Страница: 326 / 435

AAM1212-51/53 Series User’s Guide
326 Chapter 48 Packet Filter Commands
48.1.2 Packet Filter Set Command
Syntax:
ras> switch pktfilter set <portlist> [filter]
where
This command sets the packet type filter for the specified DSL port(s).
<portlist> =
You can specify a single DSL port <1>, all DSL ports <*> or a
list of DSL ports <1,3,5>. You can also include a range of ports
<1,5,6~10>.
[filter] =
[pppoe] Reject PPPoE packets. (Point-to-Point Protocol over
Ethernet) relies on PPP and Ethernet. PPPoE 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] Reject IP packets. Internet Protocol. The underlying
protocol for routing packets on the Internet and other TCP/IP-
based networks.
[arp] Reject ARP packets. 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] Reject NetBIOS packets. (Network Basic Input/Output
System) are TCP or UDP packets that enable a computer to
connect to and communicate with a LAN.
[dhcp] Reject DHCP packets. Dynamic Host Configuration
Protocol 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.
[eapol] Reject EAPol packets. EAP (Extensible Authentication
Protocol, RFC 2486) over LAN. EAP is used with IEEE 802.1x
to allow additional authentication methods (besides RADIUS)
to be deployed with no changes to the access point or the
wireless clients.
[igmp] Reject IGMP packets. Internet Group Multicast Protocol
is used when sending packets to a specific group of hosts.
[none] Accept all packets.