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Inbound Rate Limit Discarded ICMPv6 Packets Per Sec Check

AP.Remote.Access.Monitor.DA_DOSP_HEURISTIC_INBOUND_RATE_LIMIT_IPSEC_AUTH (UnitMonitor)

Network Security Queue Overflow Warning

Knowledge Base article:

Summary

Network Security Queue Overflow Warning

Causes

This might indicate a Denial of Service (DoS) attack or a spike in server load. The Inbound Rate Limit Discarded IPv6 IPsec Authenticated Packets/sec counter has exceeded a defined threshold. View this counter under IPsec DOS Protection in Performance Monitor. The counter specifies the rate at which authenticated IKEv1, IKEv2, AuthIP, or ESP IPv6 packets are received on a public adapter and discarded because they exceed the rate limit for IPv6 IPsec authenticated packets per second. An authenticated packet is an IPsec packet with an associated state entry. A state entry is a pair of IPv6 addresses that is authorized to pass through from a public to an internal adapter.

Resolutions

Check the server for indications of an authenticated attack. If an attack is detected, use mitigation measures to stop it.

Element properties:

TargetAP.Remote.Access.Class.NetworkSecurity
Parent MonitorSystem.Health.SecurityState
CategoryCustom
EnabledTrue
Alert GenerateTrue
Alert SeverityError
Alert PriorityNormal
Alert Auto ResolveTrue
Monitor TypeAP.Remote.Access.Monitor.HeuristicMonitorType
RemotableTrue
AccessibilityPublic
Alert Message
Inbound Rate Limit Discarded ICMPv6 Packets Per Sec

Error Description - {0}
Error Cause - {1}
Error Resolution - {2}
RunAsDefault

Source Code:

<UnitMonitor ID="AP.Remote.Access.Monitor.DA_DOSP_HEURISTIC_INBOUND_RATE_LIMIT_IPSEC_AUTH" Accessibility="Public" Enabled="true" Target="AP.Remote.Access.Class.NetworkSecurity" ParentMonitorID="Health!System.Health.SecurityState" Remotable="true" Priority="Normal" TypeID="AP.Remote.Access.Monitor.HeuristicMonitorType" ConfirmDelivery="true">

  <Category>Custom</Category>

  <AlertSettings AlertMessage="AP.Remote.Access.Monitor.DA_DOSP_HEURISTIC_INBOUND_RATE_LIMIT_IPSEC_AUTH_AlertMessageResourceID">

    <AlertOnState>Warning</AlertOnState>

    <AutoResolve>true</AutoResolve>

    <AlertPriority>Normal</AlertPriority>

    <AlertSeverity>Error</AlertSeverity>

    <AlertParameters>

      <AlertParameter1>$Data/Context/DataItem/Property[@Name='ErrorDesc']$</AlertParameter1>

      <AlertParameter2>$Data/Context/DataItem/Property[@Name='ErrorCause']$</AlertParameter2>

      <AlertParameter3>$Data/Context/DataItem/Property[@Name='ErrorResolution']$</AlertParameter3>

    </AlertParameters>

  </AlertSettings>

  <OperationalStates>

    <OperationalState ID="DA_DOSP_HEURISTIC_INBOUND_RATE_LIMIT_IPSEC_AUTH_Error" MonitorTypeStateID="Error" HealthState="Error"/>

    <OperationalState ID="DA_DOSP_HEURISTIC_INBOUND_RATE_LIMIT_IPSEC_AUTH_Warning" MonitorTypeStateID="Warning" HealthState="Warning"/>

    <OperationalState ID="DA_DOSP_HEURISTIC_INBOUND_RATE_LIMIT_IPSEC_AUTH_Success" MonitorTypeStateID="Healthy" HealthState="Success"/>

  </OperationalStates>

  <Configuration>

    <Interval>300</Interval>

    <SyncTime/>

    <ComponentName>Network Security</ComponentName>

    <HeuristicId>2147745801</HeuristicId>

    <Debug>false</Debug>

  </Configuration>

</UnitMonitor>