Black-box LR1530A-EU-R3 Manuel d'utilisateur télécharger pdf (Page 65)

Introduction to Filtering

The following operators are used in creating Pattern filters.

- offset Used in pattern filters to determine the starting

position to start the pattern checking.

Example: 12-80 This filter pattern will match

if the packet information

starting at the 12

octet

equals the 80 of the filter

pattern.

| OR Used in combination filters when one or the other

conditions must be met.

Example: 10-20|12-80 This filter pattern will match

if the packet information

starting at the 10

octet

equals the 20 of the filter

pattern or if the packet

information starting at the

octet equals the 80 of

the filter pattern.

& AND Used in combination filters when one and the other

conditions must be met.

Example: 10-20&12-80 This filter pattern will match

if the packet information

starting at the 10

octet

equals the 20 of the filter

pattern and the packet

information starting at the

octet equals the 80 of

the filter pattern.

~ NOT Used in pattern filters to indicate that all packets not

matching the defined pattern will be filtered.

Example: ~12-80 This filter pattern will match

if the packet information

starting at the 12th octet

does not equal the 80 of the

filter pattern.

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Black-box LR1530A-EU-R3 Manuel d'utilisateur Page 65