Dont just look at hex dumps and protocol trees. With Unsniff Network Analyzer, you can view network traffic at various levels of detail. View high level objects like images, video, HTML pages, VOIP calls, drill down to individual TCP sessions, then onto reassembled PDUs, then finally to individual packets. All this functionality is packed in a cool graphical interface.
Unsniff Network Analyzer is prone to a heap-based buffer-overflow vulnerability because it fails to perform adequate checks on user-supplied input (.usnf file parsing). Attackers may leverage this issue to execute arbitrary code in the context of the application.