Chapter 20 Filtering

Table 46 Packet Filter (continued)

LABEL

DESCRIPTION

PPPoE Pass

Point-to-Point Protocol over Ethernet relies on PPP and Ethernet. It is a

through

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 Pass through

Internet Protocol. The underlying protocol for routing packets on the Internet

 

and other TCP/IP-based networks.

 

 

ARP Pass through

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 Pass

NetBIOS (Network Basic Input/Output System) are TCP or UDP packets that

through

enable a computer to find other computers.

 

 

DHCP Pass through

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 Pass

EAP (Extensible Authentication Protocol, RFC 2486) over LAN. EAP is used

through

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 Pass through

Internet Group Multicast Protocol is used when sending packets to a specific

 

group of hosts.

 

 

Add

Click Add or Apply to save the filter settings. The settings then display in the

Apply

summary table at the bottom of the screen.

 

Clicking Add or Apply saves your changes to the IES-612-51A’s volatile

 

memory. The IES-612-51A loses these changes if it is turned off or loses power,

 

so use the Config Save link on the navigation panel to save your changes to

 

the non-volatile memory when you are done configuring.

 

 

Cancel

Click Cancel to begin configuring the fields afresh.

 

 

 

This table shows the DSL port packet filter settings.

 

 

Port

These are the numbers of the DSL ports. Click this number to edit the port’s

 

filter settings in the section at the top.

 

 

PPPoE, IP, ARP,

These are the packet filter settings for each port.

NetBios, DHCP,

“V” displays for the packet types that the IES-612-51A is to accept on the port. “-

EAPOL, IGMP,

“ displays for packet types that the IES-612-51A is to reject on the port (packet

PPPoE Only

types that are not listed are accepted). When you select PPPoE Only,”#”

 

appears for all of the packet types. With PPPoE Only, the IES-612-51A rejects

 

all packet types except for PPPoE (packet types that are not listed are also

 

rejected).

 

 

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IES-612-51A User’s Guide