12-8CHAPTER 12: CONFIGURING FILTERS

■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 12–3Basic IP Condition

Destination Address

Is Equal to

_____IP address

Source Address

Is Not Equal to

 

Destination Network

Is Equal to

_____IP address

Source Network

Is Not Equal to

_____(Mask)

Advanced IP Condition has the following condition sentences to select from:

Table 12–4Advanced IP Condition

Destination Address

Is Equal to

____IP address

Source Address

Is Not Equal to

 

Destination Network

Is Equal to

_____IP address

Source Network

Is Not Equal to

_____(Mask)

Protocol Type

Is Equal to

TCP

 

Is Not Equal to

UDP

 

 

ICMP

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3Com 3C840 manual Condition Screens, 3Basic IP Condition