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Version: 2.9.1

Release Notes

What’s New in this Release​

Build Hotfix (April 24, 2023)​


NFO Security Update​

This security update fixes the following vulnerabilities:

  • Apache Commons Text 1.10.0 or a later version (CVE-2022-42889)

  • Apache Commons FileUpload (CVE-2023-24998)

  • Kafka client updated to 3.4.0 (CVE-2022-34917)

  • OpenSearch client updated to 2.6.0 (CVE-2023-23612)

  • HSQLDB (CVE-2022-41853)

  • FasterXML jackson-databind (CVE-2022-42003, CVE-2022-42004)

  • OpenJDK (CVE-2023-21930, CVE-2023-21937, CVE-2023-21938, CVE-2023-21939, CVE-2023-21954, CVE-2023-21967, CVE-2023-21968)


NFO Linux .rpm

NFO Linux .tar.gz

NFO Windows

EDFN Linux .rpm

EDFN Linux .tar.gz

EDFN Windows

Build Hotfix (November 14, 2022)​


NFO Security Update​

NetFlow Optimizer Is Not Impacted by OpenSSL 3.0 Vulnerabilities (CVE-2022-3602 and CVE-2022-3786).

NetFlow Logic is aware of these vulnerabilities and has completed verification that these issues do not affect our products or services. No customer action is required.

Bug fix in Network Conversations Module​

When parameter "Enable (1) or disable (0) generating end of conversation events" is set to 0, inactive sessions are not removed by timeout, and in-memory DB can eat memory.

Customer Request/Ticket numbers: NFC-11127

Implement additional status values in Network Conversations Module​

Add Forwarding Status reported by Cisco routers:

  • action=U for forwardingStatus 00 (unknown)
  • action=F for forwardingStatus 01 (forwarded)
  • action=D for forwardingStatus 10 (dropped)
  • action=C for forwardingStatus 11 (consumed)

Customer Request/Ticket numbers: NFC-11122

Performance improvements​

Customer Request/Ticket numbers: NFC-11156


NFO Linux .rpm

NFO Linux .tar.gz

NFO Windows

EDFN Linux .tar.gz

EDFN Linux .rpm

EDFN Windows

Build (August 9, 2022)​


NFO Security Update​

Updated Java, Tomcat, and other libraries to the latest available security release.

JRE: zulu11.58.15-ca-jre11.0.16

tomcat: 9.0.65

spring: 5.3.22

spring-security: 5.7.2

log4j: 2.18.0

Customer Request/Ticket numbers: NFC-11071

Added NFO Output to AWS S3 Buckets​

Implemented new NFO Output Type - AWS S3

Customer Request/Ticket numbers: NFC-10354

Added NFO Output to Kafka​

Implemented new NFO Output Type - Kafka

Customer Request/Ticket numbers: NFC-10461

Added NFO Output to OpenSearch​

Implemented new NFO Output Type - OpenSearch (e.g. Amazon OpenSearch Service)

Customer Request/Ticket numbers: NFC-10468

Added NFO Output to disk​

Implemented new NFO Output Type - Disk

Customer Request/Ticket numbers: NFC-10486

Implemented Integration with AT&T Cybersecurity​

Impleemented integration with Alienvault OTX Pulses. For more information on Alienvault OTX, visit

Customer Request/Ticket numbers: NFC-11032

Improved Output Dictionary​

Added support for NFO Output dictionary in various Modules

Customer Request/Ticket numbers: NFC-10396

Improved Support for Multiple EDFNs Instalation​

Added ability to enable / disabled EDFN agents in NFO GUI

Customer Request/Ticket numbers: NFC-11076

Added New Features in Network Conversation Module​

  1. Added an option not to report state=E events to further reduce output volume
  2. Improved security functionality by always reporting communications with malicious hosts, even if they don't make it to Top N
  3. Added integration with MaxMind to enrich data with Autonomous System Number
  4. Improved integration with Microsoft AD for user identity enrichment

Customer Request/Ticket numbers: NFC-10487, NFC-10494, NFC-10996, NFC-11072

Deprecate 'Known Threat Feeds hosts' in Security Module​

Deprecate integration with 'Known Threat Feeds hosts' (Module 10053) as it is no longer supported by 3rd party vendor

Customer Request/Ticket numbers: NFC-10997


NFO Linux .tar.gz

NFO Linux .rpm

NFO Windows

EDFN Linux .tar.gz

EDFN Linux .rpm

EDFN Windows

Build (April 15, 2022)​


NFO Security Update​

A Spring MVC or Spring WebFlux application running on JDK 9+ may be vulnerable to remote code execution (RCE) via data binding. See for details.


NFO Linux .tar.gz

NFO Linux .rpm

NFO Windows

EDFN Linux .tar.gz

EDFN Linux .rpm

EDFN Windows

Customer Request/Ticket numbers: NFC-10476

Build (March 25, 2022)​


NFO Security Update​

Updated Java and Tomcat to the latest available security release.

Customer Request/Ticket numbers: NFC-10453

Added New Features in Network Conversation Module​

  1. Added support for additional Azure and Google Cloud fields
  2. Added User Identity (integrations with Microsoft AD, Azure AD, Login/Logout via syslog)
  3. Added Application enrichment
  4. Added Reputation enrichment
  5. Added option not to report denied flows
  6. Added integration with VMware vCenter
  7. Add TOS and AS fields
  8. Implemented Application collector
  9. Added GeoIP enrichment
  10. Added SNMP enrichment
  11. Added support for Cisco ACI (Bridge domains, Tenants)
  12. Improved output to AWS S3 destination
  13. Performance and usability improvments

Customer Request/Ticket numbers: NFC-10126, NFC-10127, NFC-10128, NFC-10194, NFC-10195, NFC-10197, NFC-10222, NFC-10224, NFC-10233, NFC-10236, NFC-10253, NFC-10254, NFC-10267, NFC-10350, etc.

Added NFO Output using Splunk HEC​

Added ability to configure NFO output using Splunk HEC

Customer Request/Ticket numbers: NFC-10250

Added NFO Output to Splunk Observability Cloud​

Added ability to configure NFO output to Splunk Observability Cloud (aka SignalFX)

Customer Request/Ticket numbers: NFC-10299

Implemented Output Dictionary​

Added ability to override field names in syslog key=value or JSON data elements

Customer Request/Ticket numbers: NFC-10322

Implemented New sFlow formats​

Implemented new sFlow formats per

Customer Request/Ticket numbers: NFC-10351

Improved SNMP Polling​

Implemented better handling of devices not replying to SNMP polling

Customer Request/Ticket numbers: NFC-10170, NFC-10321

Support Cisco ACI​

Implemented support for Cisco ACI fields

Customer Request/Ticket numbers: NFC-10406

Various Usability Improvments​

Various cosmetic changes and usability improvments

Customer Request/Ticket numbers: NFC-10218, NFC-10320, NFC-10389

Build (September 9, 2021)​


NFO Security Update​

Updated Java and Tomcat to the latest available security release.

Customer Request/Ticket numbers: NFC-10175

Added New features in Network Conversation Module​

  1. Added input_snmp and output_snmp fields
  2. Added support of firewallEvent IPFIX field
  3. Improve output configuration
  4. Added list of local IPv6 subnets for direction identification for IPv6 traffic
  5. Minor bug fixes and cosmetic improvements

Customer Request/Ticket numbers: NFC-9873, NFC-10056, NFC-10105, NFC-10143, NFC-10148, NFC-10151

Improved SNMP polling​

  1. Implemented better handling of bulk requests and timeouts
  2. Implemented EDFN Agent to improve onboarding of new devices

Customer Request/Ticket numbers: NFC-9849, NFC-10065

Improved AWS VPC Flow logs support in Top Traffic Monitor Module (nfc_id=20067)​

Added interface-id field to output of this Module for AWS VPC Flow logs

Customer Request/Ticket numbers: NFC-9768

Improved DNS Traffic Monitoring​

Added an option to include or exclude blocked DNS traffic reporting

Customer Request/Ticket numbers: NFC-10029

Improved TCP Health Monitor​

Added exp_ip to TCP Health Module reporting TCP Resets

Customer Request/Ticket numbers: NFC-10069

Build (June 14, 2021)​


NFO Security Update​

Updated Java, Tomcat, Jquery, Net-SNMP, Azure storage libraries, and Net-SNMP library to the latest available security release. Removed support for TSL 1.0 as it is no longer supported.

Customer Request/Ticket numbers: NFC-9451, NFC-9588, NFC-9608, NFC-9904

NFO UI Upgrade​

This release contains multiple usability improvements. Added left navigation to easily switch between various configuration sections. Added statistical counters to Status page and NFO header.

Customer Request/Ticket numbers: NFC-9570, NFC-9878, NFC-9895, NFC-9954, NFC-9978

Implemented Network Conversations Module (10062)​

This Module reports consolidated network conversations. Optionally it stitches client-server request-response flows, reporting bytes and packets server-to-client and client-to-server in separate fields. It also calculates and reports conversation metrics such as Duration (TCP session duration), State (Begin, Continue, End), Action (Accepted or Rejected), etc. The Network Conversations Module allows you to configure output fields, and to select dual destinations: UDP output and AWS S3

Customer Request/Ticket numbers: NFC-9797, NFC-9872, NFC-9873, NFC-9874, NFC-9953, NFC-9987, NFC-10041

Added JSON Output Type​

Now you can configure sending data in syslog format to one destination and at the same time send the same data in JSON format to another destination

Customer Request/Ticket numbers: NFC-9449

Added Clickhouse Output Type​

Now you can send your flow data to Clickhouse database:

Customer Request/Ticket numbers: NFC-9457

Added Output Messages Rate​

Now you can see the NFO real-time output rate in messages/sec

Customer Request/Ticket numbers: NFC-9843

Improved DNS Monitoring Modules​

Added dest_ip to DNS users message

Customer Request/Ticket numbers: NFC-10023

Improved Cisco AnyConnect Module​

This Module reports Cisco AnyConnect NVM Flow Logs. It supports nvzFlow v3 and nvzFlow v4.

Customer Request/Ticket numbers: NFC-9582, NFC-9640

Added support of AWS VPC Flow logs v3 and other AWS VPC Flow logs processing improvements​

Customer Request/Ticket numbers: NFC-9936, NFC-9943

Implemented Zeek Module (10061) (only available on request)​

This Module reports NetFlow, IPFIX, sFlow, Azure NSG Flow logs, AWS VPC Flow logs, and Google VPC Flow logs in Zeek conn.log format.

Customer Request/Ticket numbers: NFC-9595, NFC-9596, NFC-9597, NFC-9611

Added MAC address reporting​

Added source and destination MAC address to Top Traffic/Top Packets/Top Connections Modules.

Customer Request/Ticket numbers: NFC-9711

Added an option to ignore denied events in security Modules​

Added ability to enable or disable reporting security events for denied flows.

Customer Request/Ticket numbers: NFC-9614

Improved SNMP Polling Service and OIDs sets Module configuration​

Introduced β€œDevice Group” to improve management of OID sets. For example, Palo Alto Networks (PAN) polling requests are now sent only to PAN devices. Improves OID sets configuration. Allow to enable/disable SNMP polling by OID sets. Improved logging for troubleshooting

Customer Request/Ticket numbers: NFC-9817, NFC-9840, NFC-9841, NFC-9842, NFC-9844, NFC-9869, NFC-9870, NFC-9889

Improved FQDN (Reverse-DNS) Lookup Service​

Added ability to exclude certain subnets (e.g. private subnets) from DNS lookups. Implement priorities.

Customer Request/Ticket numbers: NFC-9598, NFC-9720, NFC-9746

Added support of Azure Services and Regions​

Resolve Azure Service name and Region based on source/destination IP addresses, both IPv4 and IPv6.

Customer Request/Ticket numbers: NFC-9609, NFC-9740

Added support for Azure IPv6 Ranges​

Customer Request/Ticket numbers: NFC-9740

Added support of bidirectional flows in flow-stitching Modules​

Use OUT_BYTES, OUT_PKTS, initiatorOctets, initiatorPackets fields if reported by bi-directional flow exporters.

Customer Request/Ticket numbers: NFC-9529

Improved external Data Feeder​

Optimized external Data Feeder GeoIP and VMware vCenter agents to feed data to multiple Modules. Added sampling support.

Customer Request/Ticket numbers: NFC-9660, NFC-9661, NFC-9690

Improved NFO Internal Logging​

Report read/write UDP buffer error counts. Report exporter IP address that sends flow records failing validation.

Customer Request/Ticket numbers: NFC-9583, NFC-9745

Various bug fixes, usability and stability improvements​

Customer Request/Ticket numbers: NFC-9747, NFC-9804, NFC-9777, NFC-9778, NFC-9101

Build - Security Update (May 13, 2021)​


Security update​

This release is to close known security vulnerabilities in Tomcat.

NFO is rebuilt with Tomcat 9.0.45.

To download this release please visit

Build - HotFix (March 11, 2021)​

This hotfix is to enable Repeater output filtering based on the list of exporter IPs and/or exporter IP subnets.

Customer Request/Ticket numbers: NFC-9928

To download this release please visit

Build - HotFix (February 4, 2021)​

This hotfix is to address the issue with SNMP GetBulk requests.

Customer Request/Ticket numbers: NFC-9845

To download this release please visit

Build - Security Update (February 2, 2021)​


Security update​

This release is to close known security vulnerabilities in JQuery.

NFO is rebuilt with JQuery version to 3.5.1.

To download this release please visit

Build - Security Update (December 15, 2020)​


Security update​

This release is to close known security vulnerabilities in Java and Tomcat.

NFO is rebuilt with Java 8u275 and Tomcat 9.0.41.

For details please visit: and page 18 of this document

To download this release please visit

Build (September 10, 2020)​

Added Microsoft Azure NSG Flow Logs Support​

Added ability to ingest and enrich Azure NSG Flow logs. This upgrade includes two NFO Modules; one to enrich Azure NSG Flow logs, and another to enrich and consolidate Azure NSG Flow logs with an option to report Top traffic

Customer Request/Ticket numbers: NFC-9504, NFC-9531, NFC-9657

Added NFO Modules for Google Cloud VPC Flow logs​

  • Consolidate and optimize VPC Flow logs data thus enabling customers to store and index only a fraction of volume and at the same time gain all benefits of flow information without losing accuracy
  • Enrich basic VPC Flow logs with real-time information, such as VM name, etc
  • Improve performance

Customer Request/Ticket numbers: NFC-9445, NFC-9470, NFC-9473, NFC-9481, NFC-9490, NFC-9496, NFC-9502

Added Reporting of "Services" to AWS VPC Flow Logs​

Now NFO detects if source or destination is one of AWS services (e.g. S3) and enriches flow records with this information.

Customer Request/Ticket numbers: NFC-9437

Added NFO Input Configuration for Public Clouds and Ability to Enable/Disable Inputs​

  • Now NFO input ports could be enabled/disabled via GUI
  • Added configuration of AWS/GCP/Azure inputs in NFO GUI of Inputs panel

Customer Request/Ticket numbers: NFC-9547

Added New Options in Top Traffic Modules (Top Traffic, Top Packets, Top Connections, Top Host Pairs)​

  • Now these Modules have an option to exclude ephemeral client source or destination port from reporting. The list of server side ports is configurable.
  • Enable/disable multiplying bytes, packets, and flow count by sampling rate. Any sampled NetFlow, IPFIX, or sFlow is supported.

Customer Request/Ticket numbers: NFC-5087, NFC-9137

Improve Visitors by Country Module​

Added parameter to enable/disable reporting of denied flows.

Customer Request/Ticket numbers: NFC-9460

Added Cisco AVC Modules to NFO​

Added Cisco Application Visibility and Control (AVC) ( Modules to NFO packages.

Customer Request/Ticket numbers: NFC-9423

Improved SNMP polling capabilities​

Allow users to add specific OIDs down to a table level.

Customer Request/Ticket numbers: NFC-9094

Added Cisco AnyConnect (aka NVM or nvzFlow) Support​

Added support for Cisco IPFIX fields used in AnyConnect (Secure VPN access for remote workers).

Customer Request/Ticket numbers: NFC-9516

Upgraded Syslog Output Format to Comply with RFC 5424​

NFO now uses RFC5424 ( when output sent as Syslog messages.

Customer Request/Ticket numbers: NFC-9492, NFC-9515

Allow Uploading Trusted Certificates via GUI​

Add a user interface in Admin to upload trusted certs instead of dealing with CLI.

Customer Request/Ticket numbers: NFC-9202

NFO Usability Improvements​

Various usability improvements and cosmetic enhancements.

Customer Request/Ticket numbers: NFC-9450, NFC-9506, NFC-9422

Upgraded NFO to Tomcat 9​

Customer Request/Ticket numbers: NFC-9644

Upgraded NFO to Java 8 Update 261 (8u261)​

Customer Request/Ticket numbers: NFC-9656

Build (February 26, 2020)​


Security update:​

XML external entity (XXE) injection​

This vulnerability allows an attacker to interfere with an application's processing of XML data. This vulnerability is closed in NFO For prior releases please apply the following workaround:

  1. Edit /opt/flowintegrator/tomcat/webapps/ROOT/WEB-INF/web.xml file
  2. Find parameter:
  1. Change <param-value> to false or remove the entire <init-param>section
  2. Restart tomcat service: service tomcat_nfo restart

Added Amazon Web Services (AWS) VPC Flow logs support​

  • Ingest VPC Flow logs from AWS CloudWatch, Kinesis stream, or S3
  • Support processing VPC Flow logs from multiple AWS accounts, VPCs, and regions
  • Enrich native VPC Flow logs with real-time information, such as EC2 name, DNS name, and AWS region
  • Consolidate and optimize VPC Flow logs data thus enabling customers to store and index only a fraction of volume and at the same time gain all benefits of flow information without losing accuracy

Customer Request/Ticket numbers: NFC-9006, NFC-9251, NFC-9254, NFC-9260, NFC-9287, NFC-9300, NFC-9301, NFC-9302, NFC-9304, NFC-9305

Added Google Cloud VPC Flow logs support​

Added ability to ingest, consolidate, and enrich GPC VPC Flow logs.

Customer Request/Ticket numbers: NFC-9189

Added support for Cisco AVC​

Cisco Application Visibility and Control (AVC) technology is now supported. AVC classifies more than 1400 applications, and reports them in IPFIX. AVC is available across routers, campus switches, access points, and wireless controllers. See for details.

Customer Request/Ticket numbers: NFC-8027

Improved SNMP polling capabilities​

Added support for 'sparse augments'. Improved SNMP service performance. Added SNMP polling and traps statistics.

Customer Request/Ticket numbers: NFC-8438, NFC-9081, NFC-9131, NFC-9133, NFC-9164

Support new MaxMind authentication​

Change default URLs in all Modules with GeoIP enrichment to alow users to enter their own MaxMind subscription credentials.

Customer Request/Ticket numbers: NFC-9293

Added user IP address and port to identify user when Palo Alto Networks device is not integrated with AD​

When PAN device is not integrated with AD, all users reported as "na". To identify users for applications monitoring add user IP and port.

Customer Request/Ticket numbers: NFC-9126

Security Modules: allow setting to include flow created and flow updated events​

Add parameter to all Security Modules: "Enable reporting flow created and flow updated events". Default - disabled.

Customer Request/Ticket numbers: NFC-9284

Added support for new sFlow extensions in Original Flow data​

NFO sFlow support includes sFlow extended structures as of December 2019 (

Customer Request/Ticket numbers: NFC-8885

Added ifAlias in SNMP polling Module (10003)​

Added ifAlias (OID to the output of SNMP polling Module (10003).

Customer Request/Ticket numbers: NFC-9095

Added DNS names to Security Modules output​

Added DNS names, if available, for source / destination IP addresses reported by Security Modules.

Customer Request/Ticket numbers: NFC-9096

Implemented Heartbeat messages in Security Modules​

Now Security Modules have an option to send a heartbeat message indicating that they are up and running. The message includes Module ID and the timestamp when corresponding threat lists were updated.

Customer Request/Ticket numbers: NFC-9100

Package NFO and External Data Feeder (EDFN) together​

As in most cases NFO and EDFN are installed together on the same machine, starting with this release EDFN is packaged together with NFO in one installer (rpm, tar.gz, and msi).

Customer Request/Ticket numbers: NFC-9280

Build (August 15, 2019)​


Security update:

Remove SHA-1 ciphers​

SHA-1 (Secure Hash Algorithm 1) has been known to be vulnerable to attacks. Digital certificate authorities have not been allowed to issue SHA-1-signed certificates since Jan. 1, 2016, although some exemptions have been made. Now SHA-1 ciphers are completely removed from NFO.

Customer Request/Ticket numbers: NFC-8751

Implemented NetFlow Capture and Replay functionality​

Now you can look back in time for security issues. NFO has an option to set a rolling period of time to capture flows, store these flows in memory or on disk, and replay them when a security event is detected in order to see the traffic that preceded the event.

Customer Request/Ticket numbers: NFC-8839

Implemented Micro-segmentation Analytics Module​

This Module is capable of processing NetFlow / IPFIX / sFlow from physical network devices as well as VMware Virtual Distributed Switch. It is used for analyzing β€œeast-west” and β€œnorth-south” traffic and providing information for micro-segmentation planning.

Customer Request/Ticket numbers: NFC-9038


If you had Micro-segmentation Module installed in previous NFO release, you need to reconfigure connection to vCenter after upgrading to NFO 2.6.

Implemented NSX Distributed Firewall (DFW) Monitoring​

NSX Distributed Firewall is a hypervisor kernel-embedded firewall that provides visibility and control for virtualized workloads and networks. The new NFO modules for DFW report top bandwidth consumers, top destinations, top DFW policy violators, and top VMs with the most connections.

Customer Request/Ticket numbers: NFC-8757

Implemented JSON output option​

Now you have an option to choose whether NFO can be configured to produce output in Syslog or JSON format. NFO server.cfg file has two parameters:

REPLAY_OFD_OUTPUT JSON / SYSLOG – controls output format for Original Flow Data and Replay output.

MODULES_OUTPUT JSON / SYSLOG – controls output format for Original Flow Data and Replay output.

Customer Request/Ticket numbers: NFC-8974, NFC-8999

Implemented NFO Modules ability to write output to disk​

NFO Modules now can be requested with an option to write *flow data to disk (in addition to sending it out in syslog format) – available upon request.

Customer Request/Ticket numbers: NFC-8579

Implemented support for BGP/BMP protocol to provide Autonomous System Paths​

External Data Feeder for NFO has an Agent capable of providing Autonomous System Paths data retrieved in real time from edge devices that support BGP. It is used *flow data enrichment with AS Paths information.

Customer Request/Ticket numbers: NFC-8561

Module: V2P Network Visibility – Enhancements​

This Module correlates virtual overlay network and underlying physical network and virtual network operators to identify physical network devices impacting VM Applications performance. In this release we added the following: names for VDS interfaces, ifAlias field, VDS port group name, VM Host FQDN name. Added support for new IPV4 VDS templates. Removed LAN broadcast addresses from Path output (message 20183). Improve processing of *flows with SNMP indexes equal zero. Added ESXi physical adapter speeds to calculation utilization. Hide ifIPAddress field when value is

Customer Request/Ticket numbers: NFC-5744, NFC-6776, NFC-8700, NFC-8782, NFC-8783, NFC-8819, NFC-8820, NFC-8846, NFC-8847, NFC-8894

Added support for Gentoo Linux​

Gentoo Linux is now supported.

Customer Request/Ticket numbers: NFC-8598

Added support for IPFIX field layer2OctetDeltaCount​

Added support for IPFIX field layer2OctetDeltaCount as bytes

Customer Request/Ticket numbers: NFC-8581

Added support for sFlow extensions in Original Flow data​

NFO sFlow support includes sFlow extended structures as of February 2019 (

Customer Request/Ticket numbers: NFC-8429

Enhance Microsegmentation Analytics for VMware vCenter Module​

Implement integration with VMware NSX and vShield. Report VDS port groups.

Customer Request/Ticket numbers: NFC-8755

Added ability for External Data Feeder for NFO to update multiple data sets​

Now EDFN agent can handle several data sets. Update cron setting is still per agent.

Customer Request/Ticket numbers: NFC-8930

Upgraded JDK8 to the latest build​

Changed Oracle JDK 8u66 to Zulu OpenJDK 8u212.

Customer Request/Ticket numbers: NFC-8968

Enhance NFv9/IPFIX Template persistence​

Implemented Templates expiration. Default is 24 hours.

Customer Request/Ticket numbers: NFC-7716, NFC-7717

Added FQDN name of DNS server to DNS Monitor Module (10004)​

Added FQDN name field in Sysog/JSON output.

Customer Request/Ticket numbers: NFC-8818

Expanded support of IPFIX variable length IEs​

Added IPFIX variable length IEs support.

Customer Request/Ticket numbers: NFC-7985

Performance: Implemented support for very large (several M recs) data sets​

Improve performance of External Data Feeder and NFO. In this release we support unlimited size of in-memory data sets (tested with 7M records). In addition, data sets up to 3M records could be updated every 30 seconds.

Customer Request/Ticket numbers: NFC-8614

Performance: Improve performance of streaming Modules​

Streaming Modules performance (with *flow enrichment) was improved more than 3 times (300K records pes second in NFO 2.5.1 vs. 900K records per second in NFO 2.6 without a single drop).

Customer Request/Ticket numbers: NFC-8560, NFC-8555

Performance: Improve performance of consolidation Modules​

A single instance of NFO can now run up to 8 times more *flow consolidation Modules (NFO 2.5.1 vs NFO 2.6).

Customer Request/Ticket numbers: NFC-8753

What’s Been Fixed in this Release​


[Module 10062] Intermittent Incorrect Enrichment of src_vm_name​

Customer Request/Ticket numbers: NFC-10471

[Module 10062] Intermittent Incorrect Enrichment for Cisco ACI Bridge Domains​

Customer Request/Ticket numbers: NFC-10485

[Module 10062] Fix Application Collector​

Application collector should ignore client ports.

Customer Request/Ticket numbers: NFC-11003


[Module 10003] SNMP v3 request fails with 'USM encryption error' on Windows platform​

Customer Request/Ticket numbers: NFC-10398

[Module 10053] Truncated syslog and incorrect JSON produced​

Customer Request/Ticket numbers: NFC-10416

SNMP is not working if authPriv selected with SHA and AES​

Customer Request/Ticket numbers: NFC-10417


Security Modules do not process some types of NetFlow version 9​

Customer Request/Ticket numbers: NFC-10199

Intermittent Bug - incorrect avg_time​

Service Performance Monitor Module incorrectly calculates avg_time

Customer Request/Ticket numbers: NFC-9695

Bug in Network Conversations Deduplication​

Fixed deduplication logic, and state reporting

Customer Request/Ticket numbers: NFC-10090, NFC-10161

Bug in Network Conversations Sampling calculation​

Fixed bug in multiplying bytes and packets by sampling rate

Customer Request/Ticket numbers: NFC-10093

Bug in Network Conversations DCI reporting​

Fixed bug in reporting t_int value

Customer Request/Ticket numbers: NFC-10093


Bug in bytes/packets reporting in Cisco ASA NetFlow​

Customer Request/Ticket numbers: NFC-9622

Bug SNMP Custom OID Sets Monitor​

Module crashed when polling HP memory utilization OIDs

Customer Request/Ticket numbers: NFC-9896

Bug in Original Flow Data Conversion Service​

Issue with using Custom IPFIX Information Elements lookup

Customer Request/Ticket numbers: NFC-10055

Memory Leak when Module 10103 and Module 10067 Are Enabled​

Fix memory leak when both Modules are enabled

Customer Request/Ticket numbers: NFC-9923

Fixed Issues using Safari Browser​

Customer Request/Ticket numbers: NFC-10038


Intermittent Error in FQDN Service​

Affected Platforms: All

Description: FQDN service intermittently raises errors when Google VPC Flow Logs Module 10301 is enabled.

Customer Request/Ticket numbers: NFC-9486

Bug in DNS Monitor Module does handling NetFlow v5​

Affected Platforms: All

Description: DNS Monitor Module does not produce output for NetFlow v5. NetFlow v9, IPFIX, and other *flow formats are working correctly.

Customer Request/Ticket numbers: NFC-9249

AWS Top Traffic Monitor intermitently reports 0 observation time interval​

Affected Platforms: All

Description: This Module intermitently reports 0 observation time interval.

Customer Request/Ticket numbers: NFC-9486

Various minor bug fixes​


VMware vCenter integration: unable to add 10Gibit pNIC​

Affected Platforms: All

Description: The following message is displayed:


Customer Request/Ticket numbers: NFC-9177


Memory Leak after Known malicious hosts list has been updated​

Affected Platforms: All

Description: When known malicious hosts list is updated manually or via Updater, about 19MB of memory is not released.

Customer Request/Ticket numbers: NFC-7023

[Module 10103] Output produces separate syslog with non-table values when module is polling table data and scalar (non-table) data configured in the same OID set​

Affected Platforms: All

Customer Request/Ticket numbers: NFC-8466

[Module 10103] Intermittent problem sending Module output​

Affected Platforms: All

Customer Request/Ticket numbers: NFC-9120

Partial or complete lack of syslog output becuse of malformed KRON output​

The Windows Filtering Platform prevents NFO Controller from a bind to a local port at some point on Windows Server 2016 platform​

Affected Platforms: Windows 7/10, Windows Server 2012/2016

Description: When a block of a bind to a local port happens, NFO Controller warns on Status page that NFO Sever is unavailable and restarts it.

Customer Request/Ticket numbers: NFC-8505

Various bug fixes​

Known Issues​