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Installation, Deployment, and Upgrade
Installing HCL Discover involves planning and preparing your environment, installing and configuring prerequisite software, obtaining the HCL Discover installation files, and running the HCL Discover installer.
Discover Network Capture Application Manual
Upgrade for DNCA
It is recommended that you always use the latest version of the HCL Discover Network Capture Application suitable for your version of HCL Discover.
Reverting Your DNCA Upgrade

Installation, Deployment, and Upgrade
Installing HCL Discover involves planning and preparing your environment, installing and configuring prerequisite software, obtaining the HCL Discover installation files, and running the HCL Discover installer.
- Installation and Deployment Manual
- Discover Network Capture Application Manual
  - Discover Network Capture Application Overview
    Network Capture Application from Discover captures and records the complete interaction between the visitor and the web application environment by using a network tap or network switch spanning port. The Network Capture Application software features the following benefits:
  - Installing the Network Capture Application
    The following instructions can be used to assist the installation of your Network Capture Application software.
  - Configuring the DNCA
    The HCL Discover Network Capture Application can be configured through a web-based console or through the configuration files that are stored on the DNCA server. The following information guides you on how to configure the DNCA.
  - Upgrade for DNCA
    It is recommended that you always use the latest version of the HCL Discover Network Capture Application suitable for your version of HCL Discover.
    - DNCA Upgrade
      For each HCL Discover Network Capture Application Server:
    - Verify Requirements
    - Data Capture
    - Upgrade Network Capture
    - Verify Network Capture
    - Verify Windows™ Pipeline Processing
      If your Windows™ pipeline is enabled and the Portal is available, you can verify that data is being processed through it.
    - For Multiple DNCA Servers
    - Reverting Your DNCA Upgrade
  - Packet Forwarder Overview
    The Packet Forwarder is used to capture and forward hits to a cloud-based DNCA that is operating on a virtual machine.
  - SSL Keys
    For decrypting transmissions by using the SSL protocol, the HCL Discover Network Capture Application must be provided the SSL keys in use in the transaction stream.
  - Performance Measurement
    Performance measurement provides details on the Network Capture software performance and timestamp measurements.
  - Configuring DNCA on Red Hat Enterprise Linux™ (RHEL)
    The following sections contain important information for configuring DNCA in a Red Hat Enterprise Linux™ environment:
  - DNCA monitoring
    You can monitor the passive capturing to diagnose performance issues.
  - Overview of DNCA maintenance
    The maintenance utility performs routine maintenance and logging tasks for Discover DNCA. You can use the utility to help maintain the ability of the DNCA to perform DNCA.
  - DNCA frequently asked questions (FAQ)
    The following content contains frequently asked questions or scenarios that can be used to help isolate or fix an issue with your Network Capture Application.
  - Downloading Privacy Configuration
  - Enabling web console access through a single IP address
    You can specify a single IP address which can access the web console. Limiting access to a single IP address helps to prevent unauthorized access through an unknown system.
  - Applying authentication when accessing the web console
    You can improve security by enabling authentication to the web console.
- HCL Discover Session Archiving Installation Guide
  As you prepare for an installation, you need to gather some items, review hardware and software requirements, and then you can perform the installation.
- Discover Upgrade Manual

Reverting Your DNCA Upgrade

If your DNCA upgrade failed for some reason and you must revert to the previous installation to resume capturing traffic, you can revert to your previous version.

See in the "Installation" in the HCL Discover Network Capture Application Manual .

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