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Chapter 49 Packet Filter Commands

IES-612-51 User’s Guide

310

49.1.1 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-612-51 is to accept on the port. “-” displays for

packet types that the IES-612-51 is to reject on the port (packet types that are not listed are

accepted). When you use PPPoE only,”#” appears for all of the packet types. With PPPoE

only, the IES-612-51 rejects all packet types except for PPPoE (packet types that are not listed

are also rejected).

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

Sets the IES-612-51 to allow only PPPoE traffic on the

specified xDSL port(s). The system will drop any non-PPPoE

packets.

H/H

Table 119 pktfilter Command Summary (continued)

COMMAND DESCRIPTION P

ras> switch pktfilter show 9

V: pass through, -: filter out, #:Don't care

E: Enable, D: Disable

port pppoe ip arp netbios dhcp eapol igmp | PPPoE-Only

1 # # # # # # # | E

2 - V V - V V V | D

1 2 ... 305 306 307 308 309 310 311 312 313 314 315 ... 413 414

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