3Com 3C840 - Manual (Page 142)

12-8 C HAPTER 12: C ONFIGURING F ILTERS
■
Enable or disable the filter. (You may want to create a disabled
filter, then enable it when you are satisfied that the filter conditions
are complete.)
■
Select the protocol for the filter being added. The protocols are:
Basic IP, Advanced IP, Basic IPX, Advanced IPX, Basic Bridge, and
Advanced Bridge.
■
Pressing the Next button brings up the condition screen for the
selected protocol.
■ Condition Screens
These screens have a common structure but differ in content. The
common features include the condition number (1-6) of the condition
being created and, for condition numbers 2-6, the selection via radio
buttons for “And”ing and “Or”ing the condition to the previous
condition.
For condition number 1, the user is prompted to select the action of
the filter: “Discard Packet” or “Forward Packet”. Also common is the
Next button, which takes you to the Condition Summary screen.
Basic IP Condition has the following condition sentences to select
from:
Table 12–3 Basic IP Condition
Advanced IP Condition has the following condition sentences to select
from:
Table 12–4 Advanced IP Condition
Destination Address
Source Address
Is Equal to
Is Not Equal to
_____IP address
Destination Network
Source Network
Is Equal to
Is Not Equal to
_____IP address
_____(Mask)
Destination Address
Source Address
Is Equal to
Is Not Equal to
____IP address
Destination Network
Source Network
Is Equal to
Is Not Equal to
_____IP address
_____(Mask)
Protocol Type Is Equal to
Is Not Equal to
TCP
UDP
ICMP
840ug.book Page 8 Friday, July 7, 2000 2:23 PM