HP ProCurve Secure Router 7203 dl Advanced Management And Configuration Manual page 201

ProCurve Secure Router OS Firewall—Protecting the Internal, Trusted Network
You can examine logs to look for information to help you in troubleshooting
or to see what kind of attacks have been targeted at your system. (You can
also view events as they occur on the terminal by activating the events
command from the enable mode context.) Events include:
blocked attacks
policy matches (packets filtered by an ACL or ACP)
an interface going down or up
WAN alarms
PPP sessions opening and closing
Frame Relay permanent virtual circuits (PVCs) that are becoming active
or inactive or being deleted
The router classifies events according to their priority. From those of least to
those of greatest concern, event priorities are:
informational
notification
warning
error
fatal
You can configure the Secure Router OS firewall to log events of different
priorities to different destinations. For example, you can have the firewall log
all events to the router's event history log, but only email you logs for error
and fatal events.
Overview
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