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Cloud app discovery overview

  • Artikel

Cloud discovery analyzes your traffic logs against the Microsoft Defender for Cloud Apps catalog of over 31,000 cloud apps. The apps are ranked and scored based on more than 90 risk factors to provide you with ongoing visibility into cloud use, Shadow IT, and the risk Shadow IT poses into your organization.

Petua

By default, Defender for Cloud Apps cannot discover apps that aren't in the catalog.

To see Defender for Cloud Apps data for an app that's not currently in the catalog, we recommend that you check our roadmap) or create a custom app.

Snapshot and continuous risk assessment reports

You can generate the following types of reports:

  • Snapshot reports - Provides ad-hoc visibility on a set on traffic logs you manually upload from your firewalls and proxies.

  • Continuous reports - Analyze all logs that are forwarded from your network using Defender for Cloud Apps. They provide improved visibility over all data, and automatically identify anomalous use using either the Machine Learning anomaly detection engine or by using custom policies that you define. These reports can be created by connecting in the following ways:

    • Microsoft Defender for Endpoint integration: Defender for Cloud Apps integrates with Defender for Endpoint natively, to simplify rollout of cloud discovery, extend cloud discovery capabilities beyond your corporate network, and enable machine-based investigation.
    • Log collector: Log collectors enable you to easily automate log upload from your network. The log collector runs on your network and receives logs over Syslog or FTP.
    • Secure Web Gateway (SWG): If you work with both Defender for Cloud Apps and one of the following SWGs, you can integrate the products to enhance your security cloud discovery experience. Together, Defender for Cloud Apps and SWGs provide seamless deployment of cloud discovery, automatic blocking of unsanctioned apps, and risk assessment directly in the SWG's portal.

  • Cloud discovery API – Use the Defender for Cloud Apps cloud discovery API to automate traffic log upload and get automated cloud discovery report and risk assessment. You can also use the API to generate block scripts and streamline app controls directly to your network appliance.

Log process flow: From raw data to risk assessment

The process of generating a risk assessment consists of the following steps. The process takes between a few minutes to several hours depending on the amount of data processed.

  • Upload – Web traffic logs from your network are uploaded to the portal.

  • Parse – Defender for Cloud Apps parses and extracts traffic data from the traffic logs with a dedicated parser for each data source.

  • Analyze – Traffic data is analyzed against the cloud app catalog to identify more than 31,000 cloud apps and to assess their risk score. Active users and IP addresses are also identified as part of the analysis.

  • Generate report - A risk assessment report of the data extracted from log files is generated.

Nota

Discovery data is analyzed and updated four times a day.

Supported firewalls and proxies

  • Barracuda - Web App Firewall (W3C)
  • Blue Coat Proxy SG - Access log (W3C)
  • Check Point
  • Cisco ASA with FirePOWER
  • Cisco ASA Firewall (For Cisco ASA firewalls, it's necessary to set the information level to 6)
  • Cisco Cloud Web Security
  • Cisco FWSM
  • Cisco IronPort WSA
  • Cisco Meraki – URLs log
  • Clavister NGFW (Syslog)
  • ContentKeeper
  • Corrata
  • Digital Arts i-FILTER
  • Forcepoint
  • Fortinet Fortigate
  • iboss Secure Cloud Gateway
  • Juniper SRX
  • Juniper SSG
  • McAfee Secure Web Gateway
  • Menlo Security (CEF)
  • Microsoft Forefront Threat Management Gateway (W3C)
  • Open Systems Secure Web Gateway
  • Palo Alto series Firewall
  • Sonicwall (formerly Dell)
  • Sophos Cyberoam
  • Sophos SG
  • Sophos XG
  • Squid (Common)
  • Squid (Native)
  • Stormshield
  • Wandera
  • WatchGuard
  • Websense - Web Security Solutions - Internet activity log (CEF)
  • Websense - Web Security Solutions - Investigative detail report (CSV)
  • Zscaler

Nota

Cloud discovery supports both IPv4 and IPv6 addresses.

If your log isn't supported, or if you're using a newly released log format from one of the supported data sources and the upload is failing, select Other as the Data source and specify the appliance and log you're trying to upload. Your log will be reviewed by the Defender for Cloud Apps cloud analyst team and you'll be notified if support for your log type is added. Alternatively, you can define a custom parser that matches your format. For more information, see Use a custom log parser.

Nota

The following list of supported appliances may not work with newly released log formats. If you are using a newly released format and the upload is failing, use a custom log parser and if required, open a support case. If you open a support case, make sure to provide the relevant firewall documentation with your case.

Data attributes (according to vendor documentation):

Data source Target App URL Target App IP Username Origin IP Total traffic Uploaded bytes
Barracuda Yes Yes Yes Yes No No
Blue Coat Yes No Yes Yes Yes Yes
Check Point No Yes No Yes No No
Cisco ASA (Syslog) No Yes No Yes Yes No
Cisco ASA with FirePOWER Yes Yes Yes Yes Yes Yes
Cisco Cloud Web Security Yes Yes Yes Yes Yes Yes
Cisco FWSM No Yes No Yes Yes No
Cisco Ironport WSA Yes Yes Yes Yes Yes Yes
Cisco Meraki Yes Yes No Yes No No
Clavister NGFW (Syslog) Yes Yes Yes Yes Yes Yes
ContentKeeper Yes Yes Yes Yes Yes Yes
Corrata Yes Yes Yes Yes Yes Yes
Digital Arts i-FILTER Yes Yes Yes Yes Yes Yes
ForcePoint LEEF Yes Yes Yes Yes Yes Yes
ForcePoint Web Security Cloud* Yes Yes Yes Yes Yes Yes
Fortinet Fortigate No Yes Yes Yes Yes Yes
FortiOS Yes Yes No Yes Yes Yes
iboss Yes Yes Yes Yes Yes Yes
Juniper SRX No Yes No Yes Yes Yes
Juniper SSG No Yes Yes Yes Yes Yes
McAfee SWG Yes No No Yes Yes Yes
Menlo Security (CEF) Yes Yes Yes Yes Yes Yes
MS TMG Yes No Yes Yes Yes Yes
Open Systems Secure Web Gateway Yes Yes Yes Yes Yes Yes
Palo Alto Networks No Yes Yes Yes Yes Yes
SonicWall (formerly Dell) Yes Yes No Yes Yes Yes
Sophos Yes Yes Yes Yes Yes No
Squid (Common) Yes No Yes Yes Yes No
Squid (Native) Yes No Yes Yes No No
Stormshield No Yes Yes Yes Yes Yes
Wandera Yes Yes Yes Yes Yes Yes
WatchGuard Yes Yes Yes Yes Yes Yes
Websense - Internet activity log (CEF) Yes Yes Yes Yes Yes Yes
Websense - Investigative detail report (CSV) Yes Yes Yes Yes Yes Yes
Zscaler Yes Yes Yes Yes Yes Yes

* Versions 8.5 and later of ForcePoint Web Security Cloud aren't supported

Next steps

Create snapshot cloud discovery reports

Configure automatic log upload for continuous reports

Working with cloud discovery data