Monitor unlimited number of servers
Filter log events
Create email and web-based reports

Direct access to Microsoft articles
Customized keywords for major search engines
Access to premium content

Event ID: 15002 Source: MicrosoftISAServerControl

Level
Description
ISA Server detected an Internet Protocol (IP) half scan attack. For more information about this event, see ISA Server Help. For more information about this event, see ISA Server Help.
Comments
 
As per Microsoft:
Explanation: An Internet Protocol (IP) half scan attack was attempted against a computer protected by ISA Server. This alert occurs when an unexpected Transmission Control Protocol (TCP) packet with a particular flag (for example, Fin, Ack, All, None) is detected.
User Action: If logging for dropped packets has been set, you can view details of this attack in the packet filter log in the ISALogs folder, which is located under the ISA Server installation folder. You can use this log to monitor intruder activity. Steps against intruder activity include setting up a packet filter or policy rules to inhibit traffic from the source of the intrusion.

Windows Event Log Analysis Splunk App

Build a great reporting interface using Splunk, one of the leaders in the Security Information and Event Management (SIEM) field, linking the collected Windows events to www.eventid.net.

Read more...

 

Cisco ASA Log Analyzer Splunk App

Obtain enhanced visibility into Cisco ASA firewall logs using the free Firegen for Cisco ASA Splunk App. Take advantage of dashboards built to optimize the threat analysis process.

Read more...