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Next: Format Up: Payload Detection Rule Options Previous: Format   Contents


byte_jump

The byte_jump option allows rules to be written for length encoded protocols trivially. By having an option that reads the length of a portion of data, then skips that far forward in the packet, rules can be written that skip over specific portions of length-encoded protocols and perform detection in very specific locations.

The byte_jump option does this by reading some number of bytes, convert them to their numeric representation, move that many bytes forward and set a pointer for later detection. This pointer is known as the detect offset end pointer, or doe_ptr.

For a more detailed explanation, please read Section [*].


Subsections
Steven Sturges 2006-12-08
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