User`s guide

Configuring and Managing the Card
4-11
5100-A2-GB20-00
November 1996
Filters Display (2 of 2)
Parameter Description
IP Filter Source Address Used to filter the data that is sent from the CP card to the
CO LAN segment. The CO card puts only those packets
on the LAN segment that match one of the addresses in
its filter table.
Filtering IP source addresses prevents a user from trying
to “spoof” a reply to the router by using someone else’s IP
address.
Use this option only if the service provider will be using
static IP address assignment. Because the filter address is
entered by the CO central management utility program, it
is fixed and will not work properly if the service provider
allocates IP addresses dynamically (i.e., each time a user
requests a session, a new IP address is allocated to that
user).
You can configure up to 8 addresses. Use the left and
right arrow keys to scroll through these addresses.
MAC Filter State Type 1 (one) and press Enter to enable filtering; Type 0
(zero) and press Enter to disable filtering. The default is
disabled.
You can set the filter state for each MAC Filter Source
Address selected. Use the left and right arrow keys to
scroll through the states.
IP Filter State Type 1 (one) and press Enter to enable filtering; Type 0
(zero) and press Enter to disable filtering. The default is
disabled.
You can set the filter state for each IP Filter Source
Address selected. Use the left and right arrow keys to
scroll through the states.
MAC Broadcast Filter State Type 1 (one) and press Enter to enable filtering; Type 0
(zero) and press Enter to disable filtering. The default is
disabled.
Used to filter broadcast MAC packets that are not IP or
ARP in order to reduce data traffic to CP card.
Note: If you are using a router on the CP PC, you need to
disable this parameter.
Unknown Protocol Filter
State
Type 1 (one) and press Enter to enable filtering; Type 0
(zero) and press Enter to disable filtering. The default is
disabled.
Used to filter packets other than IP or ARP.
Note: Invalid packet counters counts invalid packets
regardless of the setting of this parameter (see
page 4-6).
Save the Changes Type Y(es) and press Esc to save the changes and return
to the main menu. Type N(o) and press Esc to return to
the main menu without saving changes.