On the other hand, you may use a USB network card, create the bridge, and then disconnect the USB card - the bridge will survive.

But this requires that you have a second network card as otherwise Windows won't allow you to create the bridge. In such case, it may help to disable the functionality in the firewall/antivirus control panel.Īnother possibility could be to set up a software bridge consisting of two network cards and capture at one of the members while the antivirus/firewall should interfere with the virtual interface connected to the bridge. If there is no such item, it still does not mean that the firewall or antivirus does not do this if there is, disabling it before starting to capture may solve your issue. So go to network adapter settings and check whether, in the list of protocols and other items, you cannot disable a filter bearing the name of your anti-virus or firewall software. Now even if Wireshark (via WinPcap) successfully switches the network interface to promiscuous mode, there may be an anti-virus/firewall filter hooked to that interface and drop packets which do not match local MAC and/or IP address even though the packet filter does let them through, and this filter may be 'closer to the wire' than WinPcap's own capturing 'filter'. Wireshark will not automatically put the cards in promiscuous mode, you need to tick a box in the wireshark application to make that happen.As you wrote that your hub is a real one, not a switch bearing a label 'hub', it is a correct way of thinking that the issue may be related to the capturing machine and that promiscuous mode might be switched off. you will be loading the CPU in the switch a lot and as a result, the network might slow down a lot. If you want to sniff your whole network at home, you need to configure the switch to forward all packets from other ports onto the port where your wireshark computer is connected on.īeware. That is why you are seeing only packets from devices on the segment your computer is physically connected to. A switch will not relay network packets from one segment onto another unless it can reach its destination that way. A switch is intelligent and routes packets directly from source to destination using the appropriate port on the switch. The ability to capture only packets on the computer that Wireshark is installed on may be related to the fact that you are using a switch to connect all your devices.

Enable promiscuous mode wireshark mac