See the Wireshark Wiki's page on Wi-Fi capture setup for information on monitor mode and the Wireshark Wiki's "how to decrypt 802.11" page for information on that topic. ![]() If you're capturing on Wi-Fi, promiscuous mode might not do anything at all - you'd need to capture in monitor mode, and set up Wireshark to be able to decrypt traffic if it's a "protected" network using WEP, WPA, WPA2, or WPA3.If you're capturing on an Ethernet that's on a switched network, promiscuous mode isn't sufficient to capture other machine's traffic, because that traffic probably isn't going to be sent to your switch port see the Wireshark Wiki's page on Ethernet capture setup for more information.If you want to see the VLAN tags when capturing on one of those adapters in promiscuous mode on Windows. Some more sophisticated adapters will handle VLAN tags in the adapter and/or the driver. Saw lots of traffic (with all protocol bindings disabled), so Id say it works (using Wireshark 2.0.0rc2). In that case, Wireshark will see VLAN tags and can handle and show them. If you are only trying to capture network traffic between the machine running Wireshark or TShark and other machines on the network, you should be able to do this by capturing on the network interface through which the packets will be transmitted and received no special setup. Very interesting - I have that exact USB3 hub, too, and just tested it - it works fine in promiscuous mode on my HP Switch SPAN port. This page will explain points to think about when capturing packets from Ethernet networks. In the 2.2 kernel (i.e., a long time ago), a second mechanism was added that mechanism does not set the IFFPROMISC flag, so the interface being in promiscuous mode. Therefore, neither tcpdump nor Wireshark will, when capturing in promiscuous mode, cause ifconfig to show "PROMISC". I guess the device youve linked to uses a different ethernet chipset. Originally, the only way to enable promiscuous mode on Linux was to turn on the IFFPROMISC flag on the interface that flag showed up in the output of command such as ifconfig. Libpcap uses the second mechanism if it's available tcpdump and Wireshark both use libpcap to do packet capturing, so they'll use the second mechanism on any Linux system with a 2.2 or later kernel. As the article, only set MonitorMode2 as work as promiscuous Mode hypervPromiscuousModeSetUp Here says that set MonitorMode2 and also set physical mac address on host computer to do port mirroring. ![]() In the 2.2 kernel (i.e., a long time ago), a second mechanism was added that mechanism does not set the IFF_PROMISC flag, so the interface being in promiscuous mode does not show up in the output of ifconfig, and it does not require promiscuous mode to be turned off manually - closing the last descriptor on which promiscuous mode was requested suffices. Originally, the only way to enable promiscuous mode on Linux was to turn on the IFF_PROMISC flag on the interface that flag showed up in the output of command such as ifconfig. There's promiscuous mode and there's promiscuous mode.
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