Chapter 48 Packet Filter Commands

48.1.2 Packet Filter Set Command

Syntax:

ras> switch pktfilter set <portlist> [filter]

where

<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.

This command sets the packet type filter for the specified DSL port(s).

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IES-612-51A User’s Guide