UniFi Site Manager ISP Packet Loss

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Id	6f2d71d6-e6c4-0da4-91da-e8192dc5b12c
Rulename	UniFi Site Manager: ISP Packet Loss
Description	Identifies when WAN packet loss occurs. Even small loss percentages can significantly degrade VoIP calls and video conferencing quality.
Severity	Medium
Tactics	Impact
Techniques	T1498 T1499
Required data connectors	UniFiSiteManagerConnectorDefinition
Kind	Scheduled
Query frequency	15m
Query period	30m
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/UniFi Site Manager (CCF)/Analytic Rules/UniFiCloudISPPacketLoss.yaml
Version	1.0.1
Arm template	6f2d71d6-e6c4-0da4-91da-e8192dc5b12c.json

KQL

// UniFi ISP Packet Loss Detection
let PacketLossThreshold = 5;
let MinTotalPacketLoss = 10;
Unifi_SiteManager_ISPMetrics_CL
| where TimeGenerated > ago(30m)
| mv-expand period = Periods
| extend
    metricTime = todatetime(period.metricTime),
    packetLoss = toint(period.data.wan.packetLoss),
    ispName = tostring(period.data.wan.ispName),
    ispAsn = tostring(period.data.wan.ispAsn),
    avgLatency = toint(period.data.wan.avgLatency)
// De-duplicate Periods: each poll returns the same hour buckets, so collapse to latest value per metricTime
| summarize arg_max(TimeGenerated, packetLoss, avgLatency, ispAsn) by tostring(SiteId), ispName, metricTime
| where metricTime > ago(30m)
| where packetLoss >= PacketLossThreshold
| summarize
    TotalPacketLoss = sum(packetLoss),
    EventCount = count(),
    AvgLatency = avg(avgLatency),
    FirstSeen = min(metricTime),
    LastSeen = max(metricTime)
    by SiteId, ispName, ispAsn
| where TotalPacketLoss >= MinTotalPacketLoss
| extend TimeGenerated = now()
| project
    TimeGenerated,
    SiteId = SiteId,
    ISPName = ispName,
    ISPAsn = ispAsn,
    TotalPacketLoss,
    EventCount,
    AvgLatencyMs = round(AvgLatency, 1),
    FirstSeen,
    LastSeen

YAML

entityMappings:
- entityType: Host
  fieldMappings:
  - identifier: HostName
    columnName: SiteId
- entityType: CloudApplication
  fieldMappings:
  - identifier: Name
    columnName: ISPName
tactics:
- Impact
requiredDataConnectors:
- dataTypes:
  - Unifi_SiteManager_ISPMetrics_CL
  connectorId: UniFiSiteManagerConnectorDefinition
incidentConfiguration:
  groupingConfiguration:
    enabled: true
    lookbackDuration: PT4H
    reopenClosedIncident: false
    matchingMethod: AllEntities
  createIncident: true
id: 6f2d71d6-e6c4-0da4-91da-e8192dc5b12c
severity: Medium
subTechniques:
- T1498.001
- T1499.002
status: Available
query: |
  // UniFi ISP Packet Loss Detection
  let PacketLossThreshold = 5;
  let MinTotalPacketLoss = 10;
  Unifi_SiteManager_ISPMetrics_CL
  | where TimeGenerated > ago(30m)
  | mv-expand period = Periods
  | extend
      metricTime = todatetime(period.metricTime),
      packetLoss = toint(period.data.wan.packetLoss),
      ispName = tostring(period.data.wan.ispName),
      ispAsn = tostring(period.data.wan.ispAsn),
      avgLatency = toint(period.data.wan.avgLatency)
  // De-duplicate Periods: each poll returns the same hour buckets, so collapse to latest value per metricTime
  | summarize arg_max(TimeGenerated, packetLoss, avgLatency, ispAsn) by tostring(SiteId), ispName, metricTime
  | where metricTime > ago(30m)
  | where packetLoss >= PacketLossThreshold
  | summarize
      TotalPacketLoss = sum(packetLoss),
      EventCount = count(),
      AvgLatency = avg(avgLatency),
      FirstSeen = min(metricTime),
      LastSeen = max(metricTime)
      by SiteId, ispName, ispAsn
  | where TotalPacketLoss >= MinTotalPacketLoss
  | extend TimeGenerated = now()
  | project
      TimeGenerated,
      SiteId = SiteId,
      ISPName = ispName,
      ISPAsn = ispAsn,
      TotalPacketLoss,
      EventCount,
      AvgLatencyMs = round(AvgLatency, 1),
      FirstSeen,
      LastSeen  
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/UniFi Site Manager (CCF)/Analytic Rules/UniFiCloudISPPacketLoss.yaml
kind: Scheduled
queryPeriod: 30m
version: 1.0.1
name: 'UniFi Site Manager: ISP Packet Loss'
queryFrequency: 15m
triggerThreshold: 0
relevantTechniques:
- T1498
- T1499
description: |
    Identifies when WAN packet loss occurs. Even small loss percentages can significantly degrade VoIP calls and video conferencing quality.
triggerOperator: gt

ARM