I don't quite understand the Destination Descriptors when writing a rule. For example, I'm checking the default "System Rule: Password Attacks: SNMP - Attempt" and under Destination IP there are these three descriptors "Same", "$Target01" and "Any". Are these overlapping?? Any means any IP. Doesn't fall into "same" IP descriptor?.
Also, "$Target01" means to me that same variable in another field has the same value. Isn't this the same as using "same" descriptor?
Not so clear.