Something is wrong with your network and do not know why? Wireshark can help. This is a protocol analyzer network known by anyone who has made experiences with management and / or network analysis. With this tool, Whose version 1.4.4 was announced this week, we can obtain real-time, detailed information packet data of our network, can be displayed by various types (IPX, ICMP, TCP, UDP, etc), very useful especially when dealing with large Network terminal.
It also has an official website with enough information to help the uninitiated. Here you can find a video that shows the power of wireshark. Wireshark is in the repositories of many distributions. If it is not your case, you can proceed to download it here.