Spying on BitTorrent users is an activity probably all filesharing aficionados are aware of since it’s one of the industry’s mains weapons against illegal downloading. However, today we’re going to address the idea of individual spying – that is, to put it in softer words, someone on your own network taking a peek at your activities online. Along with that, we introduce you to Wireshark – a free, open-source packet analyzer, a tool utilised in network troubleshooting, analysis, software and communications protocol development, and education.
What’s WireShark’s relevance to BitTorrent? Well, anyone who invests some time in learning this tool’s basics and who has access to a network can monitor what all the network’s users are doing in the digital realm. Fortunately or not, it might take some patience to get a grip on how the communication between torrent clients and the digital landscape works.

The video below is meant to shows us how one can use Wireshark to understand Bittorrent activity :

From Wireshark:

Wireshark is a network protocol analyzer, and is the standard in many industries. It is the continuation of a project that started in 1998. Hundreds of developers around the world have contributed to it, and it is still under active development. Read or write many different capture file formats: tcpdump (libpcap), Catapult DCT2000, Cisco Secure IDS iplog, Microsoft Network Monitor, NAI Sniffer (compressed and uncompressed), Sniffer Pro, and NetXray, Network Instruments Observer, Novell LANalyzer, RADCOM WAN or LAN Analyzer, Shomiti or Finisar Surveyor, Tektronix K12xx, Visual Networks Visual UpTime, and WildPackets EtherPeek,TokenPeek, or AiroPeek.