For network admins and network security professionals, one of the most important tools to learn to use is Wireshark (formerly Ethereal), a free and open source network analyzer/packet sniffer software ...

The overall equation is pretty simple: If you want to understand network traffic, you really should install Wireshark. And, if you really want to use Wireshark effectively, you should consider this ...

Wireshark is a must-have (and free) network protocol analyzer for any security professional or systems administrator. It's like Jaws, only for packets. Wireshark is the world’s leading network traffic ...