OSSEC combined with Logstash, Elasticsearch, and Kibana can give you a lot of this data on the fly. Here is my list of bad ssh logins from the past 24 hours.

  Taiwan              145963   
  China               15881  
  Korea, Republic of  14079  
  United States       9600   
  Kuwait              1769   
  Thailand            1563   
  Portugal            1518   
  United Kingdom      788  
  India               558  
  Saudi Arabia        284  
  Russian Federation  190  
  Japan               146  
  Turkey              94   
  Bulgaria            83   
  Brazil              35   
  Netherlands         33   
  Rwanda              28   
  Hong Kong           22   
  Germany             19   
  Romania             15   

Some details on the end to end setup https://groups.google.com/forum/#!searchin/ossec-list/kibana...