Efficient Extraction of Network Event Types from NetFlows

Algorithm 1

Hashing of the flows.

1: function CREATEKEY(flow; flowSpec)

2:  keys

3:  for all formula   flowSpec do

4:    attValue (formula flow)   flow-formula evaluation

5:    keys key    attValue

6:  end for

7:  hashKey hash(keys)         arbitrary hash function

8:  return hashKey

9: end function