We propose a tool for summarizing communication patterns between multiple hosts from traffic data with a small memory space, using a 2-D bitmap. Here, we focus on the communication pattern between pairs of source-destination hosts; these represents spatial communication patterns. By analyzing communication patterns using a bitmap, we can identify a super spreader, which is a host that sends packets to many destinations, or analyze the relationship between two source hosts. For the latter purpose, we present an application of the bitmap to calculate the similarity of hosts based on their peer-hosts patterns
['Keisuke Ishibashi', 'Tatsuya Mori', 'Ryoichi Kawahara', 'Katsuyasu Toyama', 'Shunichi Osawa', 'Shoichiro Asano']
2-D Bitmap for Summarizing Inter-Host Communication Patterns