security

[michael <linux@networkingnewsletter.org.uk>]

I notice that frequently many machines around here get attacked by a
potential hacker (a prog I guess) trying lots of usernames to get in to
all the machines, using the same set of usernames at the same time. Have
people seen this on their machines? I'm guessing it's a virus/worm on a
Windows box doing this but does anybody know more? 

I've followed & done most of the suggestions listed in chpts 4 & 5 of
"Securing Debian" HowTo/Manual although I will admit to not following
and therefore not having got around to firewalling. Other suggestions
most welcome.

Thanks
-- 
Michael Bane
Atmospheric Physics Group
University of Manchester