Event ID - 15114

Event Id15114
SourcePOP Intrusion Detection Filter
DescriptionISA Server disconnected a connection because its connection limit was exceeded. For more information about this event, see the event viewer.
Event InformationAccording To Microsoft:
ISA Server rejected a connection from the client because its connection limit was exceeded. The event could indicate a flood attack.

Resolution:
Use the log filter to determine if the source of the connection is legitimate or the result of a flood attack. To do this, in the console tree of ISA Server Management, on the node for the server, click Monitoring. In the Logging tab edit the log filter properties to view the source of the connection.If the connection should be allowed, increase the connection limit threshold. To do this, in the console tree of ISA Server Management click Configuration, then click General. In the details pane, select Define Connection Limits, and then use the options in the Connection Limits properites page to increase the number of concurrent connections allowed.
Reference Linkshttp://www.microsoft.com/technet/support/ee/transform.aspx?ProdName=Internet%20Security%20and%20Acceleration%20Server&ProdVer=4.0.3443.594&EvtID=15114&EvtSrc=POP%20Intrusion%20Detection%20Filter&LCID=1033

Catch threats immediately

We work side-by-side with you to rapidly detect cyberthreats
and thwart attacks before they cause damage.

See what we caught

Did this information help you to resolve the problem?

Yes: My problem was resolved.
No: The information was not helpful / Partially helpful.