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security/ciso-office/shared-assets/security-alarms/README.md

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@@ -76,27 +76,27 @@ Once we have the IAM pre-requisites in place, we can start by defining our custo
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Navigate to ```Observability & Management->Logging analytics->Dashboards``` and select Network Dashboard.
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![network_dashboard](images/network_dashboard.png)
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<small>Network Dashboard from Securty Fundamentals Dashboard</small>
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<sub>Network Dashboard from Securty Fundamentals Dashboard</sub>
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Expand Egress traffic widget and you will see the Log Explorer
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![drilldown](images/drilldown.png)
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<small>Piture of log explorer</small>
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<sub>Piture of log explorer</sub>
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Run the modfied query:
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```
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'Log Source' = 'OCI VCN Flow Unified Schema Logs' | where 'Destination IP' = 'Public IP' | eval vol = 'Content Size Out' / 1024 | timestats span = 10minute sum(vol) as 'Volume (KB)
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```
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![runquery](images/runquery.png)
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<small>Picture of exection of modified query</small>
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<sub>Picture of exection of modified query</sub>
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![savequery1](images/savequery1.png)
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<small>Picture of save query as</small>
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<sub>Picture of save query as</sub>
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Pull the list of saved queries
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![savedsearches](images/savedsearches.png)
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<small>Picture of modified query</small>
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<sub>Picture of modified query</sub>
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# Create detection rule
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Navigate to ```analytics->dashboard->saved query```, and pull up the saved query.
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![addmetric1](images/addmetric1.png)
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<small>Picture of saved query screen</small>
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<sub>Picture of saved query screen</sub>
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Create the Detection rule. In the detection rule creation screen, select the folowing:
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- "Scheduled Detection Rule" is the method for running the log analytic query
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- "Minimum interval" is 5 minutes, normally a good choice for security alarms.
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![addmetric2](images/addmetric2.png)
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<small>Picture of first rule creation step</small>
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<sub>Picture of first rule creation step</sub>
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![addmetric3](images/addmetric3.png)
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<small>Picture of 2. step</small>
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<sub>Picture of 2. step</sub>
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When the detection rule is created verify the detection rule
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![detectionrule](images/detectionrule.png)
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<small>Picture of rule validation</small>
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<sub>Picture of rule validation</sub>
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# Topic Creation
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The topic creation is straightforward, as illustrated below. Within the OCI console, navigate to ```Developer Services -> Application Integration -> Notifications```
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![create_topic_1](images/create_topic_1.png)
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<small>Topic creation, step 1</small>
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<sub>Topic creation, step 1</sub>
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![create_topic_2](images/create_topic_2.png)
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<small>Topic creation, step 2</small>
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<sub>Topic creation, step 2</sub>
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![create_topic_3](images/create_topic_3.png)
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<small>Topic creation, step 3</small>
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<sub>Topic creation, step 3</sub>
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After the topic is created, a subscription is reasonable to create, the receiver of the alarm.
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![create_topic_4](images/create_topic_4.png)
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<small>Topic creation, step 4</small>
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<sub>Topic creation, step 4</sub>
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![create_topic_5](images/create_topic_5.png)
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<small>Topic creation, step 5</small>
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<sub>Topic creation, step 5</sub>
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When the subscription is created, the subscriber will receive an email with a link to a confirmation.
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> N.B. If a different type of subscription is chosen, the receiving user will receive a confirmation through that notification channel, e.g., Slack.
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Use the link in the notification to confirm the subscription.
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![confirm](images/confirm.png)
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<small>Confirmation link mail</small>
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<sub>Confirmation link mail</sub>
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The subscription will then change to Active.
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![create_topic_6](images/create_topic_6.png)
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<small>Final status after successful confirmation of the subscription</small>
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<sub>Final status after successful confirmation of the subscription</sub>
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# Define the alarm
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This will create an alarm that trigger if the last 5 minutes egress traffic exceed 1000000 bytes.
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![alarm1a](images/alarm1a.png)
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<small>Alarm definitions</small>
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<sub>Alarm definitions</sub>
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![alarm1](images/alarm1b.png)
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<small>Create Alarm definition</small>
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<sub>Create Alarm definition</sub>
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![alarm2](images/alarm2.png)
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<small>Create Alarm definition continued</small>
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<sub>Create Alarm definition continued</sub>
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Here is an example of a mail alarm received when the egress volume exceeds 1000000 bytes within 5 min. This might indicate a potential data loss.
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![alarm3](images/alarm3.png)
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<small>Mail received when alarm is fired</small>
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<sub>Mail received when alarm is fired</sub>
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# Summary
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