A hardware device or server software that captures packets transmitted in a network for routine inspection and problem detection. Also called a "sniffer," "packet sniffer," "packet analyzer ...

Wireshark is the best open-source network analyzer available. It is packed with features comparable to commercial network analyzers, and with a large, diverse collection of authors, new enhancements ...

you could always install a network protocol analyzer to find out what addresses were in use. But what if you’re on a GUI-less server? You certainly won’t rely on a graphical-based tool for ...