Configure Zscaler NSS to send logs to Arctic Wolf

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 these log types:

• Configure Zscaler NSS to send web logs to Arctic Wolf.
• Configure Zscaler NSS to send firewall logs to Arctic Wolf.
• Configure Zscaler NSS to send DNS logs to Arctic Wolf.

Requirements

• An activated Arctic Wolf Sensor

• An NSS server with a distinct hostname and IP address for each log type that you want to monitor:

  • Web
  • Firewall
  • DNS

• IBM QRadar LEEF formatted logs

• An installed and configured NSS virtual appliance to stream web logs from your Zscaler devices.

  See About Nanolog Streaming Service (NSS) and Adding NSS Feeds for more information.

Before you begin

• This is an optional configuration. Discuss this log forwarding option with your Concierge Security® Team (CST).

Configure Zscaler NSS to send web logs to Arctic Wolf

1. Sign in to the Zscaler NSS web administration interface with administrator permissions.

2. Click Administration > Settings > Nanolog Streaming Service.

3. Click the NSS Feeds tab.

4. Click Add NSS Feed.

5. In 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.

   • For the remaining fields, keep the default values. Arctic Wolf recommends that you keep 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 with administrator permissions.

2. Click Administration > Settings > Nanolog Streaming Service.

3. Click the NSS Feeds tab.

4. Click Add NSS Feed.

5. In 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.

   • For the remaining fields, keep the default values. Arctic Wolf recommends that you keep 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 with administrator permissions.

2. Click Administration > Settings > Nanolog Streaming Service.

3. Click the NSS Feeds tab.

4. Click Add NSS Feed.

5. In 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.

   • For the remaining fields, keep the default values. Arctic Wolf recommends that you keep 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

1. Sign in to the Arctic Wolf Unified Portal.

2. Click the Tickets tab, and then do one of these actions:

   • New customers — In the Ticket Type list, select Onboarding. Then, click the existing [Deploy] Site Config: <ticket_subject> ticket.
   • Existing customers — Click Open a New Ticket.

3. On the Open a New Ticket page, configure these settings:

   • What is this ticket related to? — Select General request.
   • Subject — Enter Syslog changes.
   • Related ticket (optional) — Keep empty.
   • Message — Enter this information for your Concierge Security® Team (CST):
     • Confirmation that you completed the steps in this configuration guide.
     • The IP address or hostname you used during the configuration.
     • Questions or comments that you have.

4. Click Send Message.

   Your CST will review the details and make sure that Arctic Wolf is successfully processing the logs.

See also

• About Nanolog Streaming Service (NSS)
• Adding NSS Feeds