However, when capturing with a packet analyzer in promiscuous mode on a port on a network switch, not all traffic through the switch is necessarily sent to the port where the capture is done, so capturing in promiscuous mode is not necessarily sufficient to see all network traffic. Wireshark lets the user put network interface controllers into promiscuous mode (if supported by the network interface controller), so they can see all the traffic visible on that interface, including unicast traffic not sent to that network interface controller's MAC address. It is very similar to tcpdump, but has a graphical front-end, plus some integrated sorting and filtering options. Wireshark is a free and open-source packet analyzer used for network troubleshooting, analysis, software and communications protocol development, and education. Running on 64-bit Windows 10 (21H2), build 19044, with Intel(R) Core(TM) i5-8350U CPU 1.70GHz (with SSE4.2), with 16243 MB of physical memory, with GLib 2.66.4, with Qt 5.15.2, with Npcap version 1.55, based on libpcap version 1.10.2-PRE-GIT, with c-ares 1.17.0, with GnuTLS 3.6.3, with Gcrypt 1.8.3, with nghttp2 1.44.0, with brotli 1.0.9, with LZ4 1.9.3, with Zstandard 1.4.0, without AirPcap, with light display mode, without HiDPI, with LC_TYPE=German_Germany.utf8, binary plugins supported (21 loaded).\) 3.6.0 (v3.6.0-0-g3a34e44d02c9) Compiled (64-bit) using Microsoft Visual Studio 2019 (VC++ 14.29, build 30040), with Qt 5.15.2, with libpcap, with GLib 2.66.4, with zlib 1.2.11, with Lua 5.2.4, with GnuTLS 3.6.3 and PKCS #11 support, with Gcrypt 1.8.3, with MIT Kerberos, with MaxMind DB resolver, with nghttp2 1.44.0, with brotli, with LZ4, with Zstandard, with Snappy, with libxml2 2.9.10, with libsmi 0.4.8, with QtMultimedia, with automatic updates using WinSparkle 0.5.7, with AirPcap, with SpeexDSP (using bundled resampler), with Minizip.
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