ZyXEL Communications IES-1248-51A, User Manual

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Chapter 59 Packet Filter Commands
IES-1248-51V User’s Guide
438
59.1.1 Packet Filter Show Command Example
The following example displays the packet type filter settings for xDSL ports 1 and
2. “V” displays for the packet types that the IES-1248-51V is to accept on the
port. “-” displays for packet types that the IES-1248-51V is to reject on the port
(packet types that are not listed are accepted). When you use PPPoE only,”#”
switch pktfilter set <portlist>
[ filter ]
Sets the packet type filter for the specified xDSL
port(s).
filter
: Select the filter(s) separated by a space from
the following choices:
•
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 xDSL 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.
H/H
switch pktfilter pppoeonly
< portlist >
Sets the IES-1248-51V to allow only PPPoE traffic on
the specified xDSL port(s). The system will drop any
non-PPPoE packets. H/H
Table 163 pktfilter Command Summary (continued)
COMMAND DESCRIPTION P