Internal Encryption?

I have a customer who is renewing a contract with a bank an they have gotten some suggestions that are recommended and I do not know what they want with this one. Can someone please explain this and some possible solutions?

Suggested Requirement = Consider encrypting data using a strong, commercially-proven algorithm, while in transport on your internal network and in storage.

I understand the requirements that they listed but this. It is not that I do not understand. I know what they want but is it possible to encrypt data transfer on an internal network? What is used to do this? The network consistes of 3 PC's and a 2000 server. Not a domain, this is a workgroup setup. Hopefully I will be able to get a Small Business Server in there soon to set up a domain envrionment.

Thank experts. This one has just stumped me for some reason.
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maderosiaAsked:
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Juan OcasioApplication DeveloperCommented:
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rsivanandanCommented:
What kind of internal data? and by what means? The 3PCs talk to Windows 2000 server and if you can explain what kind of traffic, we may be in a better understanding.

Cheers,
Rajesh
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jhanceCommented:
Windows supports IPSEC which would meet the above requirement.  It's standard with Windows (i.e. doesn't require 3rd party tools) and fairly easy to setup.

See:

http://www.microsoft.com/technet/itsolutions/network/ipsec/default.mspx
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maderosiaAuthor Commented:
Thanks all
jhance found what I was looking for but I am splitting the points because you both jocasio and jhance provided me info for what I ws looking for.
I did not know that you could use IPsec on interdomain traffic.

Rajesh - I am guessing that by the suggested requirement that they mean all network traffic. The 3 pc's users use Microsoft Access to sort data and store everything on their 2000 server. That is all the traffic. besides printing out reports.


Thanks again,
Mark
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