ZyXEL Communications IES-612-51A User Manual

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Chapter 48 Packet Filter Commands
IES-612-51A User’s Guide
328
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.