Wireshark (aka Ethereal) is a network protocol analyzer allows you to capture and examine data from a live network or from a snapshot file on disk.You can browse the captured data in an interactive way and view summary information and details for each package. Wireshark has several powerful features,including a language filter rich display and ability to view flow created back of the TCP.
The program can read the capture file from tcpdump (libpcap),NAI Sniffer (compressed and uncompressed),Sniffer Pro,NetXray,snoop,Shomiti Surveyor,AIX s iptrace,Microsoft Network Monitor,Novell s LANalyzer,RADCOM s WAN / LAN Analyzer,HP-UX nettl,ISDN4BSD,iplog security IDS of Cisco,diary pppd (format pppdump) and group AG / Wildpacket Etherpeek.Wireshark can also read traces made from router WAN Lucent / Ascend router and ISDN of Toshiba. Any files in this number can be compressed with gzip and Wireshark will decompress them quickly.
Content update Wireshark 3.0.4: