cisco/umbrella
| Vendor | Cisco Systems, Inc. |
| Author | CrowdStrike |
| Version | 1.2.0 |
| Minimum LogScale Version | 1.142.0 |
Cisco Umbrella provides DNS level security with streamlined deployment. This package allows you to ingest logs into LogScale to add DNS protection insights to your threat overview for an improved web security posture and contains a parser for Cisco Umbrella DNS resolver logs.
Logs are uploaded in ten-minute intervals from the Umbrella log queue to your S3 bucket as zipped CSV log files.
The parser normalizes data to a common schema based on CrowdStrike Parsing Standard (CPS) 1.0. This schema allows you to search the data without knowing the data specifically, and just knowing the common schema instead. It also allows you to combine the data more easily with other data sources which conform to the same schema.
Breaking Changes
This update includes parser changes, which means that data ingested after upgrade will not be backwards compatible with logs ingested with the previous version.
Updating to version 1.0.0 or newer will therefore result in issues with existing queries in for example dashboards or alerts created prior to this version.
See CrowdStrike Parsing Standard (CPS) 1.0 for more details on the new parser schema.
Follow the CPS Migration to update your queries to use the fields and tags that are available in data parsed with version 1.0.0.
Installing the Package in LogScale
Find the repository where you want to send the events, or Creating a Repository or View.
Navigate to your repository in the LogScale interface, click Settings and then on the left.
Click and install the LogScale package for (i.e. cisco/umbrella).
Configurations and Sending the Logs to LogScale
To get logs from Cisco Umbrella into LogScale, configure logs to download to an S3 bucket.
The names of the buckets are named as described here: Subfolders naming
Then you need to configure LogScale to collect data from AWS S3 buckets using the cisco-umbrella parser. See the documentation for cloud: Ingest Data from AWS S3 and self-hosted Ingest Data from AWS S3 deployments to send logs directly from S3 bucket into LogScale repository.
Verify Data is Arriving in LogScale
Once you have completed the above steps the data should be arriving in your LogScale repository.
You can verify this by doing a simple search for
#Vendor = "cisco" | Product="umbrella"
to see the events.
Package Contents Explained
This package parses incoming data, and normalizing the data as part of that parsing. The parser normalizes the data to CrowdStrike Parsing Standard (CPS) 1.0 schema based on OpenTelemetry standards, while still preserving the original data.
If you want to search using the original field names and values, you can access those in the fields whose names are prefixed with the word Vendor. Fields which are not prefixed with Vendor are standard fields which are either based on the schema (e.g. source.ip) or on LogScale conventions (e.g. @rawstring).
The fields which the parser currently maps the data to, are chosen based on what seems the most relevant, and will potentially be expanded in the future. But the parser won't necessarily normalize every field that has potential to be normalized.