Sometimes investigators want to search for some certain system events that happened on firewall. This can be done in NSM.
In NSM, go to Inventories and click the firewall in question, click on Monitor/System Events/All Logs/, the system events for this firewall are displayed:

Adjust the time frame (slider or custom) to the desired period of time. You can search keywords like 'link' or 'interface' directly in the 'Search' box, or click on the 'Filter' button, then enter the criteria, example Destination IP like this:

The results can be exported to CSV format file. You can also click 'Sync Event Config' to request NSM collect latest system events from firewall.
Authentication logs like admin login, user login, failed login can be searched the same way.