A plug-in is a package of code that provides additional functionality to Sentinel and the most common plug-ins are Collector Scripts and Connectors.
Collector Script The Collector Script plug-in adds the ability to parse raw data from an Event Source. This is similar to the Collector Script in Sentinel 5, however in Sentinel 6 the plug-in also provides additional meta-data to enable the ESM panel to prompt the user for parameter values as well as enable ESM to automatically choose supported connection methods that work well with the Collector Script. This meta-data is added to the Collector Script plug-in by the plug-in developer.
Connector In Sentinel 6, all Connectors are pluggable. A Connector plug-in contains both the implementation of the connection mechanism as well as the GUI screens needed to configure the connector. This allows for a user to easily add additional Connectors to Sentinel.
Hot Fixes and New Functionality In the future, some Sentinel enhancements and defect fixes may be available as plug-ins.
Once you import a plug-in into Sentinel, it is centrally stored in the Plug-in Repository. The appropriate Sentinel components on other machines will automatically start using the plug-in.