Echo EN55022 manual Filter Setup, MAC Filters WAN or Ethernet, Menu Selection Description

4.7FILTER SETUP

N.B. IP and IPX filter tables are created using these menus BUT are activated using the SERVICE SETUP menu.

Unit Status

Traffic

Analysis

Network Loading

R e m o t e M a n a g e m e n t

Unit

Configuration

Service Setup

Filter Setup

Events

MAC Filter

Ethernet MAC	W A N M A C
Filter	Filter

	IP Filter
Ethernet IP		W A N M A C
FIlter		FIlter

IPX SAP

Filter

Ethernet IPX	W A N I P X
SAP Filter	SAP Filter

There are filter tables available for both the Ethernet connection and WAN link. Whilst it is preferable to block packets prior to forwarding them to the WAN link, it may arise that control of the remote site is not possible, and therefore WAN filters must be used to protect from unwanted incoming traffic.

Filters are referenced for receive traffic only i.e. all IP packets from the Ethernet will be referenced through the Ethernet IP filter before forwarding to the internal routing tables. If the user configures both Ethernet and WAN filters they should be a mirror image of one another, except for the swapped IP source/destination Address and Port numbers.

4.7.1MAC FILTERS (WAN or Ethernet)

MENU SELECTION	DESCRIPTION
LIST	Displays all addresses from which
	packets are by the Router.
ADD	MAC addresses can be added to list
	from which the Router can forward
	packets. Maximum number in list is
	200. The addresses must be entered
	in 2x6, 4x3 or 12x1 format.
DELETE	Deletes MAC address from the list.
CLEAR	Clears all list entries.
SAVE FILTER	Filtering tables will run from RAM
	however the configuration, must
	be saved to operate after a reset.
	When creating a large filter table
	it is advised that the user save
	progress regularly.

Echo LANlink Router Option User Manual Issue 1.0 04 December 1997 Page 36 of 59