nProbe has been designed as an engine that processes packets and compute basic statistics, and plugins that extend the core with additional capabilities. Each plugin dissects a specific traffic (e.g. SMTP email traffic), but you can enable the use of multiple plugins simultaneously. nProbe based on the template configuration (-T) will selectively enable plugins and define as many templates as necessary. Their number depends on the plugins enabled and on the fact that you might enable IPv4 and/or IPv6 traffic support.
The following sections cover the configuration and information elements provided by each individual plugin. Most plugins are available also in source format, but sometimes due to license restrictions (e.g. the plugin has been sponsored by a company that does not want others to access the source code) we are unable to release all plugins in source format.