DNCA installation requirements

The following requirements must be met before you install the Unica Discover Network Capture Application:

  • IPv6 addresses must be captured.
  • Your Apache servers are handling SSL compression traffic to and from Chrome browsers.

For additional requirements, see:

Network traffic requirements

Network devices such as switch span ports, network taps, and load balancers are just a few of the network traffic capture points that can provide a copy of live network traffic to the DNCA Application. Typically, the mirrored traffic consists of the customer website's web server traffic. Mirrored network traffic is considered passive in nature, as the DNCA's capture NIC(s) do not interact with the live network traffic.

Note: TheDNCA Application supports the capture of 128-bit SSL traffic. Encryption methods by using a fewer numbers of encryption bits are not supported

Before you begin to capture network traffic, you must review the requirements for network traffic that DNCA expects to receive. This information must be shared with the IT infrastructure team.

Note: Discover does not support the use of the Diffie-Hellman cryptographic protocol and recommends configuring your web servers to not use it.
Note: The Unica Discover Network Capture Application expects to see the start of all TCP connections. If TCP persistent connections are used by any server that is feeding data to the DNCA, then latency can be introduced in the capture of sessions, and data can be lost.

DNCA hardware requirements

The following table lists the minimum and the recommended hardware requirements to run the Network Capture Application.

Table 1. DNCA hardware requirements
Minimum requirements Recommended requirements
Note: These are the minimum requirements for operation of the Network Capture Application software. They cannot accurately support the volume of data and processing requirements for your environment. For more information about sizing for your environment, contact Discover Professional Services.
  • Dual processor, dual core: Intel dual-core Xeon processor at 2.8 GHz or better for total of four cores minimum
  • 8 GB of RAM minimum
  • 3 NICs, 1 Gigabit each
  • 100 GB or better SAS or SCSI hard disk
    • 15-ms access time
    • 7200-rpm drive speed
  • Dual processor, quad core: Intel quad-core Xeon processor at 2.8 GHz or better for total of eight cores minimum
  • 16 GB of RAM minimum
  • 3 NICs, 1 Gigabit each
  • 100 GB or better SAS or SCSI hard disk drive
    • 15-ms access time
    • 7200-rpm drive speed

The following hardware is recommended for general software installation and machine recovery:

  • CD-ROM drive
  • 1.44-MB diskette drive
  • Secondary drive for capturing and storing network traffic to archives: 200 GB - 800 GB