The Throwing Star LAN Tap is a small and simple passive device for monitoring or sniffing, 10BASE-T, 100BASE-TX and 1000BASE-T Ethernet communications and networks.
You just insert it in-line on a target Ethernet connection (between a computer and a switch, for example), and then you can use monitoring tools like tcpdump or Wireshark on a computer attached to one or both of the sniffing connectors.
The sniffing ports are receive-only, there is no danger of a monitoring station, accidentally transmitting packets onto the wire.
The Throwing Star LAN Tap is a passive Ethernet tap, requiring no power for operation. There are active methods of tapping Ethernet connections (e.g., a mirror port on a switch), but none can beat passive taps for portability. To the target network, the Throwing Star LAN Tap looks just like a section of cable, but the wires in the cable extend to the monitoring ports in addition to connecting one target port to the other.
The monitoring ports (J3 and J4) are receive-only; they connect to the receive data lines on the monitoring station but do not connect to the station\'s transmit lines. This makes it impossible for the monitoring station to accidentally transmit data packets onto the target network.
The Throwing Star LAN Tap is designed to monitor 10BASET and 100BASETX networks. It is not possible for an unpowered tap to perform monitoring of 1000BASET (Gigabit Ethernet) networks, so the Throwing Star LAN Tap intentionally degrades the quality of 1000BASET target networks, forcing them to negotiate a lower speed (typically 100BASETX) that can be passively monitored. This is the purpose of the two capacitors (C1 and C2).
Like all passive LAN Taps, the Throwing Star LAN Tap degrades signal quality to some extent. Except as described above for Gigabit networks, this rarely causes problems on the target network. In situations where very long cables are in use, the signal degradation could reduce network performance. It is a good practice to use cables that are not any longer than necessary.
- Use Ethernet cables to connect the Throwing Star LAN Tap (J1 and J2) in line with a target network to be monitored. - Use Ethernet cables to connect one or both of the monitoring ports (J3 and J4) to ports on one or two monitoring stations. Each port monitors traffic in one direction only. Use your favorite software (e.g., tcpdump or Wireshark) on the monitoring station(s) to capture network traffic.
Be the first to ask a question about this product!
The EspoTek Labrador is a USB-connected mini electronic lab portable that includes an oscilloscope, signal generator, power supply, logic analyzer and multimeter. Oscilloscope (2 channels,
PERF2+ is an electronic prototyping board designed for electronics enthusiasts and to make prototyping easier and faster. Perf2+ is a double-sided circuit board with perpendicular marks on each side.
With the Ripcord USB power cable, you have the freedom to power anywhere you are any device in 5, 9 or 12V from a USB port of a laptop, from an external battery or from a smartphone/tablet (with OTG
Designed to succeed the GoodFET project the GreatFET One is a universal USB device. By adding expansion cards called "neighbors", you can turn GreatFET One into a USB device that does almost
Stock and shipped from France
14 days to return, 2 warranty
Response within 24h to 72h
SSL, VISA, Mastercard, Paypal