Sniffing the Corporate and Institutional Network
by Embedded
12 December 1998
Corporate and Institutional Survival Techniques
Sniffing the Corporate and Institutional Network
(You unix gurus, no laughing! ;)
This essay will talk about using a little piece of software called
Sniffer Pro 1.0 by Network
Associates (used to be called Net X-Ray before it was bought out). We
will discuss how to
extract data at the lowest level as far as the internet/intranet is
concerned.
I hope you've all been reading Fravia+ pages and learned that the
internet is such a large
collection of information. However, how many of us have thought about
the basics of the internet.
It is like learning to program in assembler. We should understand how
the fundamentals work. We
have these little packets that contain data flying everywhere. It would
make sense that if
we could look at these little gold nuggets, we could extract the
information we wanted right
out of them. Security, not much left after this... then again I think
that's what that whole
SSL thing is all about (if someone would like to talk about Secure
Sockets... please send me a copy).
Imagine a phone line with a tap in it. Heck imagine a whole building of
phone lines and your
at the switchboard... and then you realize the possibilities.
Your network card sees all the traffic on the hub its connected too. If
several hubs are daisy
chained together, heck all the better. I hope we all know that telnet
and ftp are both inherently
unsecure. Meaning all data transferred is in plain text. That is, when
y