Monitoring Internet traffic of other companies?

What ways are there to monitor increased internet usage from a company (like emails sent and general internet usage) without being inside that company?

In general, I am looking to monitor internet chatter from a specific company and its employees.  

I guess I am looking for specific Google queries or other sources of open information (Twitter, etc.) that you could search daily for traffic counts.

Any ideas?

cerkseesAsked:
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rindiConnect With a Mentor Commented:
You either need a PC with monitoring tools inside that company, or you need to to be the ISP of that company. Otherwise there is no chance of getting to that info (at least not legally).
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cerkseesAuthor Commented:
I want to be clear - I do NOT want to see the emails or internet traffic of another company.  I simply want to know when there is a spike (or lull) in internet communications coming from the company.  

What is in the internet communications is of no concern to me.
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gheistConnect With a Mentor Commented:
You need to get SNMP access and run monitoring tool like MRTG/routers2/smokeping
This way you get saturated wires identified

Next step is to dump the traffic, make some assessment of what goes wrong and how to tame it. For that you need a good machine to dump everything on the wire. This neeeds fast  disks and good netcards.

As previous experts advised - there are data protection issues bringing private or internal data physically or logically outside the company, so consider yourself limited to gathering enough of "evidence" being inside company's office.

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cerkseesAuthor Commented:
Oops....re-awarding points....
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cerkseesAuthor Commented:
Thanks guys....The concept was to monitor a company internet usage and see if increases in usage would give early indicators of news or events that may affect stock price.  

Oh well....on to the next concept.....
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