EMCO Eventlog Audit collects the eventlog from the computers on the LAN, to a database where you can search for any details such as Event ID, Type, Category, Source, User SID, String from the Event description and Time period.
Alert can be made from any of theese details which can be sent by email, with or without an attachment in several formats.

keywords
EMCO EventLog Audit , network scanner , syslog , event log , scan events , network tools |