ethereal
has a cool little-known feature: the -z
option
to generate statistics from a pcap file. For instance, here's how to
get a count of how much traffic you saw every five minutes:
$ tethereal -q -r foo.pcap -z io,stat,300 =========================================== IO Statistics Interval: 300.000 secs Column #0: | Column #0 Time |frames| bytes 000.000-300.000 3832 344880 300.000-600.000 3744 336960 600.000-900.000 2316 208440 ===========================================The query language is pretty bizarre and protocol specific but there are some useful analysis tools. There's also the proto,colinfo option which lets you select out arbitrary protocol columns to print in the text dump from tethereal. |