On Fri, 31 Aug 2018 at 08:16, DrSkip wrote: > This might even be better/cheaper: > > > https://www.amazon.com/Throwing-Original-Monitoring-Ethernet-Communicatio= n/dp/B077XY2TGD > > Darndest Shiraken I ever saw. Wouldn't embed deeply with the jacks where they are. _________ That's very obvious, in retrospect, if it works for your task. The two PCs (etc) connect as usual and the monitor port connects only as a receiver. They say: 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. > > > > > On Thu, Aug 30, 2018, 04:45 Isaac M. Bavaresco > > > wrote: > > > >> Use Cain&Abel (or other hackering software) to turn a switch into a hu= b > by > >> ARP Spoofing/routing table overflow. > >> > >> Em qui, 30 de ago de 2018 02:46, Harold Hallikainen < > >> harold@mai.hallikainen.org> escreveu: > >> > >>> I have a hub here that I use all the time with Wire Shark. Sometimes = I > >>> need to help someone debug something in the field, and they don't hav= e > a > >>> hub, and they are getting hard to come by. > >>> > >>> Since 10/100 Ethernet uses two pair, one for transmit, and one for > >>> receive, it SEEMS like it should be possible to make a resistive hub > >> where > >>> each transmit pair drives the receive pairs of the other two ports > (total > >>> of 3 ports). I've done similar resistive networks for audio splitting > >>> while maintaining impedances. But, I haven't figured out whether this > >>> would work or what the resistor values would be. I did find a passive > hub > >>> using a bunch of diodes, but it seems like resistors should work. I > also > >>> see Ethernet taps where there are four ports. Data going one way > between > >>> the other two ports shows up on one of the monitor ports while data > going > >>> the other way shows up on the other monitor port. This requires two > >>> Ethernet ports on the computer running WireShark, which is a pain. > >>> > >>> So, any ideas on this? Is it possible to use resistive splitters to > make > >> a > >>> passive hub? > >>> > >>> Thanks! > >>> > >>> Harold > >>> > >>> > >>> -- > >>> FCC Rules Updated Daily at http://www.hallikainen.com > >>> Not sent from an iPhone. > >>> -- > >>> http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > >>> View/change your membership options at > >>> http://mailman.mit.edu/mailman/listinfo/piclist > >>> > >> -- > >> http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > >> View/change your membership options at > >> http://mailman.mit.edu/mailman/listinfo/piclist > >> > > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .