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An analyst wants to detect malicious network traffic in web applications.  Using the WAF ACL SQS collector to send firewall logs to Devo, the analyst will find malicious IP activity.  As a result, the analyst will use Access Control Lists to block the traffic, preventing attackers from cross-site scripting.

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1. Authorize SQS Data Access.

   1. For this service, the bucket name must start with aws-waf-logs-.

2. Add data to the S3 bucket.

   1. In WAF, select a Web ACL.

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   2. Select “Logging” and “Enable.”

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   3. Set the destination to the S3 bucket previously authorized.

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Run It

In the Cloud Collector App, create an SQS Collector instance using this parameters template, replacing the values enclosed in < >.

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/*
A malicious user has gained access to WAF configuration.
The user has created a rule which has blocked critical traffic.
Identify new rules which are blocking lots of traffic so they can be removed.
*/
from cloud.aws.waf.logs 
where eq(action,"BLOCK")
group by terminatingRuleId
select count() as requests_blocked,
first(eventdate) as rule_started 
where rule_started>today()-7d //recently created rule

Monitor It

Create an inactivity alert to detect interruptions of transfer of data from the source to the SQS queue using the query

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