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Managed Detection and Response

Zscaler ZIA Logs

Updated Aug 31, 2023

Configure Zscaler NSS to send logs to Arctic Wolf

Note: Before starting this procedure, discuss this log forwarding option with your Concierge Security® Team.

Arctic Wolf® can monitor syslog-formatted messages from Zscaler® devices if the Nanolog Streaming Service (NSS) is configured to forward these messages to the Arctic Wolf observation pipeline.

You can configure log forwarding for any of these log types:

Requirements

Configure Zscaler NSS to send web logs to Arctic Wolf

  1. Sign in to the ZScaler NSS web administration interface as an administrator.

  2. Click Administration > Settings > Nanolog Streaming Service to access the Nanolog Streaming Service page.

  3. Click the NSS Feeds tab.

  4. Click Add NSS Feed.

  5. On the Edit NSS Feed dialog, configure these settings:

    • Feed Name — Enter a descriptive title for the feed. For example, Arctic Wolf Syslog - ZIA Web.
    • NSS Server — Select the appropriate server.

      Tip: If only one server is available, it is selected by default.

    • Status — Click Enabled.
    • SIEM IP Address — Enter the management IP address of the Arctic Wolf Sensor.
    • SIEM TCP Port — Enter 514.
    • Log Type — Click Web Log.
    • Feed Output Type — Select QRadar LEEF. The Feed Output Format is populated with the appropriate string.
    • Leave the remaining fields as their default values. We recommend leaving User Obfuscation set to Disabled to allow Arctic Wolf to correlate these events with additional user actions in your environment.

  6. Click Save.

    You have successfully configured your Zscaler NSS to send syslog-formatted messages to your Arctic Wolf Sensor.

Configure Zscaler NSS to send firewall logs to Arctic Wolf

  1. Sign in to the ZScaler NSS web administration interface as an administrator.

  2. Click Administration > Settings > Nanolog Streaming Service to access the Nanolog Streaming Service page.

  3. Click the NSS Feeds tab.

  4. Click Add NSS Feed.

  5. On the Edit NSS Feed dialog, configure these settings:

    • Feed Name — Enter a descriptive title for the feed. For example, Arctic Wolf Syslog - ZIA Firewall.

    • NSS Type — Select NSS for Firewall.

    • NSS Server — Select the appropriate server.

      Tip: If only one server is available, it is selected by default.

    • Status — Click Enabled.

    • SIEM IP Address — Enter the management IP address of the Arctic Wolf Sensor.

    • SIEM TCP Port — Enter 514.

    • Log Type — Click Firewall Logs.

    • Firewall Log Type — Click Both Session and Aggregate Logs.

    • Feed Output Type — Select Custom.

    • Feed Output Format — Enter this string:

      LEEF:1.0|Zscaler|NSS-FW|6.0|%s{action}|usrName=%s{login}\trole=%s{dept}\trealm=%s{location}\tsrc=%s{csip}\tdst=%s{cdip}\tsrcPort=%d{csport}\tdstPort=%d{cdport}\tdstPreNATPort=%d{cdport}\tsrcPreNATPort=%d{csport}\tdstPostNATPort=%d{sdport}\tsrcPostNATPort=%d{ssport}\tsrcPreNAT=%s{csip}\tdstPreNAT=%s{cdip}\tsrcPostNAT=%s{ssip}\tdstPostNAT=%s{sdip}\ttsip=%s{tsip}\ttsport=%d{tsport}\tttype=%s{ttype}\tdnat=%s{dnat}\tstateful=%s{stateful}\taggregate=%s{aggregate}\tnwsvc=%s{nwsvc}\tnwapp=%s{nwapp}\tproto=%s{ipproto}\tipcat=%s{ipcat}\tdestcountry=%s{destcountry}\tavgduration=%ld{avgduration}\trulelabel=%s{rulelabel}\tdstBytes=%ld{inbytes}\tsrcBytes=%ld{outbytes}\tduration=%d{duration}\tdurationms=%d{durationms}\tnumsessions=%d{numsessions}\tthreatcat=%s{threatcat}\tthreatname=%s{threatname}\tipsrulelabel=%s{ipsrulelabel}\taction=%s{action}\tdevicehostname=%s{devicehostname}\trecordid=%d{recordid}\tdevicename=%s{devicename}\tdeviceostype=%s{deviceostype}\n

    • Duplicate Logs — Select Disabled.

    • Leave the remaining fields as their default values. We recommend leaving User Obfuscation set to Disabled to allow Arctic Wolf to correlate these events with additional user actions in your environment.

  6. Click Save.

    You have successfully configured your Zscaler NSS to send syslog-formatted messages to your Arctic Wolf Sensor.

Configure Zscaler NSS to send DNS logs to Arctic Wolf

  1. Sign in to the ZScaler NSS web administration interface as an administrator.

  2. Click Administration > Settings > Nanolog Streaming Service to access the Nanolog Streaming Service page.

  3. Click the NSS Feeds tab.

  4. Click Add NSS Feed.

  5. On the Edit NSS Feed dialog, configure these settings:

    • Feed Name — Enter a descriptive title for the feed. For example, Arctic Wolf Syslog - ZIA DNS.

    • NSS Type — Select NSS for Firewall.

    • NSS Server — Select the appropriate server.

      Tip: If only one server is available, it is selected by default.

    • Status — Click Enabled.

    • SIEM IP Address — Enter the management IP address of the Arctic Wolf Sensor.

    • SIEM TCP Port — Enter 514.

    • Log Type — Click DNS Logs.

    • Feed Output Type — Select Custom.

    • Feed Output Format — Enter this string:

      LEEF:1.0|Zscaler|NSS-DNS|6.0|%s{reqaction}|usrName=%s{login}\trole=%s{dept}\trealm=%s{location}\treqaction=%s{reqaction}\tresaction=%s{resaction}\tcat=nss-dns\treqrulelabel=%s{reqrulelabel}\tresrulelabel=%s{resrulelabel}\tdnsReqtype=%s{reqtype}\tdnsReq=%s{req}\tdnsResp=%s{res}\tdstPort=%d{sport}\tdurationms=%d{durationms}\tsrc=%s{cip}\tdst=%s{sip}\tcategory=%s{domcat}\tdeviceowner=%s{deviceowner}\tdevicehostname=%s{devicehostname}\treqrulelabel=%s{reqrulelabel}\trecordid=%d{recordid}\n

    • Duplicate Logs — Select Disabled.

    • Leave the remaining fields as their default values. We recommend leaving User Obfuscation set to Disabled to allow Arctic Wolf to correlate these events with additional user actions in your environment.

  6. Click Save.

    You have successfully configured your Zscaler NSS to send syslog-formatted messages to your Arctic Wolf Sensor.

Next steps

Contact your Concierge Security® Team to inform them that you have configured syslog forwarding, and to validate that the logs are being ingested appropriately. Include the following information:

See also