Any of these files can be compressed with gzip and Ethereal will decompress them on the fly. It can also read traces made from Lucent/Ascend WAN routers and Toshiba ISDN routers, as well as the text output from VMS's TCPIPtrace utility and the DBS Etherwatch utility for VMS.

Wireshark can read capture files from tcpdump (libpcap), NAI's Sniffer (compressed and uncompressed), Sniffer Pro, NetXray, Sun snoop and atmsnoop, Shomiti/Finisar Surveyor, AIX's iptrace, Microsoft's Network Monitor, Novell's LANalyzer, RADCOM's WAN/LAN Analyzer, HP-UX nettl, i4btrace from the ISDN4BSD project, Cisco Secure IDS iplog, the pppd log (pppdump-format), the AG Group's/WildPacket's EtherPeek/TokenPeek/AiroPeek, or Visual Networks' Visual UpTime.

Data can be captured 'off the wire' from a live network connection, or read from a capture file.

Portable Wireshark can be used by network professionals around the world for analysis, troubleshooting, software and protocol development and education.

Wireshark was written by networking experts around the world, and is an example of the power of open source. Portable Wireshark for Windows 10 - Full description

Wireshark download for windows