Address Filter Examples
Address Filter Examples |
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If a packet with source address A and destination address B is collected from the network, the following tables will show whether it passes an address filter or not depending on different filter settings.
Note: If the source or destination filter is set to Off, the Link setting is ignored and the address filter will work as if it contains only the filter which is not switched Off. So if Source is Off and Destination is set to exclude address B, all packets destined to B will be discarded independently from their source address. A filter is implicitly set to Off if its address list is empty.
Case 1: Address A is contained in the source filter list and address B in the destination filter list:
|
Source Incl/Excl |
Link |
Destination Incl/Excl |
Pass |
|
Off |
Or/And |
Off |
Yes |
|
Off |
Or/And |
Incl |
Yes |
|
Off |
Or/And |
Excl |
No |
|
Incl |
Or/And |
Off |
Yes |
|
Incl |
Or |
Incl |
Yes |
|
Incl |
Or |
Excl |
Yes |
|
Incl |
And |
Incl |
Yes |
|
Incl |
And |
Excl |
No |
|
Excl |
Or/And |
Off |
No |
|
Excl |
Or |
Incl |
Yes |
|
Excl |
Or |
Excl |
No |
|
Excl |
And |
Incl |
No |
|
Excl |
And |
Excl |
No |
Case 2: Neither address A is in the source filter list nor is address B in the destination filter list:
|
Source Incl/Excl |
Link |
Destination Incl/Excl |
Pass |
|
Off |
Or/And |
Off |
Yes |
|
Off |
Or/And |
Incl |
No |
|
Off |
Or/And |
Excl |
Yes |
|
Incl |
Or/And |
Off |
No |
|
Incl |
Or |
Incl |
No |
|
Incl |
Or |
Excl |
Yes |
|
Incl |
And |
Incl |
No |
|
Incl |
And |
Excl |
No |
|
Excl |
Or/And |
Off |
Yes |
|
Excl |
Or |
Incl |
Yes |
|
Excl |
Or |
Excl |
Yes |
|
Excl |
And |
Incl |
No |
|
Excl |
And |
Excl |
Yes |
Case 3: Address A is contained in the source filter list, but address B is not contained in the destination filter list:
|
Source Incl/Excl |
Link |
Destination Incl/Excl |
Pass |
|
Off |
Or/And |
Off |
Yes |
|
Off |
Or/And |
Incl |
No |
|
Off |
Or/And |
Excl |
Yes |
|
Incl |
Or/And |
Off |
Yes |
|
Incl |
Or |
Incl |
Yes |
|
Incl |
Or |
Excl |
Yes |
|
Incl |
And |
Incl |
No |
|
Incl |
And |
Excl |
Yes |
|
Excl |
Or/And |
Off |
No |
|
Excl |
Or |
Incl |
No |
|
Excl |
Or |
Excl |
Yes |
|
Excl |
And |
Incl |
No |
|
Excl |
And |
Excl |
No |
The last case, where A is not in the source filter list but B is contained in the destination filter list should now be an easy exercise.
Next you will find some tips on which settings to use for different purposes.
