The filters in Colasoft Capsa decrease the packets to be analyzed and displayed, enabling you to focus on what you are really interested in. However, to get a primary impression of your network communications, you'd better not to set any filters unless you are practiced in using this program.

Colasoft Capsa has two kinds of filters: global filters and project filters.

• Global filters
  Some commonly used protocols filters are predefined and listed in the Filter Table, which can be applied to the current project by clicking the Add button and select From Filter Table.... Please note that the modification to global filters must be made in the Filter Table.
  
  
  
  
• Project filters
  You can define project filters in the Project Settings - Filter page. The filters defined in this page are only applied to the current project unless you tick the Set as default settings checkbox. Colasoft Capsa graphically displays project filters, you can easily accept, reject a filter or change its status. The flexibility of Colasoft Capsa lets you accept some filters and at the same time reject some others: the packets matching the Accept filters will be analyzed and the packets matching the Reject filters will be discarded.
  
  

This chapter describes how to create, modify, and use filters for network analysis, you may also find some examples which can help you be familiar with filters more quickly.