It’s always better to Read The Fine Manual (or run perl afterglow.pl -h for the more updated helpfile)…though it’s not really that well documented 😛 Afterglow allows for two column inputs, rather than us having to do weird tricks to make them 3-column.
(Note to self: get the raw data with fields in the order that you want where possible/faster, rather than pumping it through sed. Makes for good practice though.)
Using the csv file containing userids (visualized in yellow) and IPs (visualized in green) over the past few months from Splunk, here’re the results of some of the experiments.
Oh, for the Windows users, you can use type instead of cat 😉
Seems like very little overlap in the userids that were attempted (with the exception of the few favourites like root, guest, test). A coordinated/distributed attack perhaps? Haven’t dug more into the IPs in question, but I’m pretty sure that they’d be broadband addresses, meaning that they are bots.
Of course we could try with a larger timespan, but the result isn’t really readable… The resulting 1MB file (1813 x 1704 px) for over all time in Splunk only looks pretty, and not readable.