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Log Correlation Engine 5.0.0 Release Notes - 1/31/2017

The following notes describe the changes that are included in Log Correlation Engine (LCE) version 5.0.0, significant enhancements to LCE, and information about upgrading. A PDF file of these release notes is also available here.

General Upgrade Notes

Note: If your upgrade path skips versions of LCE®, Tenable recommends reviewing the release notes for all skipped versions. You may need to update your configurations because of features and functionality added in skipped versions.
  • As with any application, it is always advisable to perform a backup of your LCE installation and archived logs before upgrading.
  • Detailed instructions and notes on upgrading are located in the Log Correlation Engine 5.0 User Guide.
  • Supported upgrade paths:
    • 4.6.x > 5.0.0
    • 4.8.x > 5.0.0

Compatibility Notes

  • LCE version 5.0.0 is compatible with SecurityCenter version or later. Older versions of SecurityCenter will work with LCE 5.0.0 without issues, but will not support some new features.
  • LCE version 5.0.0 is compatible with LCE Clients version 4.0.0 or later. Older LCE Clients will not be able to log in and send event data to LCE 5.0.0.
  • Please contact Tenable Support at if you have any questions about compatibility issues.

File Names & MD5 Checksums

File SHA256 MD5
lce-5.0.0-el5.x86_64.rpm 7d1d32d5d741cfd32e0cc00e83e524d6025b810138155d322e2b93ae5bfcdb6d f85ed7a4dad9eee65ab7860747aab73f
lce-5.0.0-el6.x86_64.rpm 96ee009adb43b0e06c00053c232aa140d5119047af0df172871a6d2ffb31a11e 42b456b58082014058748349e8c186d5
lce-5.0.0-el7.x86_64.rpm 14a64016ab55272b33cc11d00b31f01e6f175190f7e45b382685051f07a1d1cc ba59815da109f3e4908819a589290b78

New Features:

  • Added support for receiving, storing, and querying Unicode characters via syslog and the LCE Windows Agent 5.0.0
  • Replaced backend database with Elasticsearch to increase scalability and flexibility
  • Added an Event Rule editor to simplify immediate alerting, forwarding, and filtering capabilities


  • Improved clarity of Health and Status / Advanced reporting by adding active/archive database sizes on disk and oldest event reporting to show the timeframe covered by each database
  • Improved configuration of database usage in Configuration / Storage by allowing users to directly specify the maximum space allowed to be used by LCE for the active/archive databases
  • Clarified debug log options in Configuration > Advanced
  • Simplified client configuration by preserving column selection and sort options after refresh and update
  • Simplified client policy management by adding a "Hide Default" policies button to show only user-defined policies
  • Added sub-second precision to event timestamps
  • Reduced overhead in processing UDP syslog payloads on RHEL / CentOS 6 and 7 systems
  • Greatly increased application data collected in debug files

Removed Features:

  • Native load balancing and high availability are no longer supported. Elasticsearch should instead be leveraged for scalability with LCE 5.0.0.

Security Enhancements:

  • Updated OpenSSL to 1.0.2k
  • Updated libcurl to 7.52.1
  • Updated jQuery UI to 1.12
  • Added a lockout for administrator users after 5 unsuccessful password guesses
  • See advisory TNS-2017-02 for more details

Resolved Items:

  • Fixed an issue where client policies were truncated in some cases when creating client assignment rules in Configuration > Advanced

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