18
Protecting Your Digital Assets
TM
CRU Ditto Shark User Manual
•
Snap Size:
Allows you to capture up to the specified amount of bytes of each packet of data.
•
Dropped Pkt Log Interval:
Allows you to specify the time interval in minutes of how often the
Ditto Shark writes its accumulated dropped packet information to the Action log. Setting this value
to ‘0’ disables packet loss reporting.
5.4.2 Live Capture Settings
When enabled, this service runs continuously in the background and streams captured data in realtime
over the network to a remote monitor using the third-party Wireshark network protocol analyzer. See
Section 4.1.1 for more information.
•
Auto Start:
Set this value to ‘Enabled’ to turn on live capture as soon as the Ditto Shark is pow-
ered on. Set this value to ‘Disabled’ if you want the user to choose when to start the live capture
service in the Browser Interface.
•
Port:
This is the port that the Ditto Shark uses to talk to the third-party network protocol analyzer
software. The default port is 2002.
•
Username:
The username used by the third-party network protocol analyzer software.
•
Password:
The password used by the third-party network protocol analyzer software.
5.4.3 Advanced Settings
•
Buffer Size:
Sets the the buffer size used by the Ditto Shark during a network capture action. The
minimum size is 512K (kilobytes). The default size of 16M (megabyte) works best for most use
cases.
•
MTU:
If you are using the Ditto Shark on a network that’s configured to a non-standard maximum
transmission unit size (e.g. it uses jumbo frames), then set this field to match that value. Most
Ethernet LANs will use the standard MTU of 1500. The commonly accepted range for a valid MTU
is 68 to 65,535 as defined in RFC 791.
•
Link Speed:
Allows you to set the Ethernet connection speed throughput. In most cases, ‘Auto
Negotiate’ will work. If you experience problems staying connected, you may need to change the
speed to match what your network’s capabilities are.
Figure 20.
The “Network Capture” tab on the “Configure” screen.
