SQL server is using most of our bandwidth

Our SQL server is using most of our bandwidth.  I'm not that familiar with SQL so please give me as much detail as possible.

See attachment.  We saw this activity, what could it be?

Where should I begin looking for the cause?
J.R. SitmanIT DirectorAsked:
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Dave BaldwinFixer of ProblemsCommented:
Technically, it is the applications that are using the SQL Server functions that are causing the bandwidth to be used.  On this computer, those two programs / services are not using any bandwidth at all because I do not have any applications connecting to them at this time.  You need to find out what is accessing your SQL Server.
Remember that its best Practice to allocate a server that will be used for Nothing other than SQL server itself, the power of SQL server is as powerful as the processor and Memory of the machine that runs it.
J.R. SitmanIT DirectorAuthor Commented:

On the resource monitor it showed 6.8 MBPS.  I think we read it wrong as it was using 6.8 of our bandwidth.  Does this make sense?
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J.R. SitmanIT DirectorAuthor Commented:
So we should monitor the TCP connections to see what is accessing the server, correct?
that would be a good start :)

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J.R. SitmanIT DirectorAuthor Commented:
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Microsoft SQL Server 2008

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