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Echo LANlink Router Option User Manual Issue 1.0 04 December 1997 Page 36 of 59
4.7 FILTER SETUP
N.B. IP and IPX filter tables are created using these menus BUT
are activated using the SERVICE SETUP menu.
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.
4.7.1 MAC 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.
Unit Status
Traffic
Analysis
Network
Loading
Remote
Management
Unit
Configuration
Service
Setup
Filter
Setup
Events
IP Filter
IPX SAP
Filter
MAC Filter
WAN MAC
Filter
Ethernet MAC
Filter
WAN MAC
FIlter
Ethernet IP
FIlter
WAN IPX
SAP Filter
Ethernet IPX
SAP Filter