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alonig1

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Crypto Locker

What do I need to get for an office environment to keep in clean from viruses such as Crypto locker and other malware that encrypts the files.

So even if a workstation receives an email an try's to open it , it won't let him.  

I firewall with filtering, this office has an AV installed on the server and on the client and still all of the computer got infected.
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Mal Osborne
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There is  no "magic bullet" here. New or polymorphic malware will not be picked up by antivirus software. Keeping Outlook's restrictions on executing attachments helps, as does all the other stuff you have in place.

You still need backups, so in the event of an attack, a restore can be done.
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alonig1

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So those firewalls with AV that filters every packet won't help?
They help a lot. Might filter 99% of the nasties out.  

Until malicious software has been discovered, sent to the AV provider, analysed, and new patterns created and distributed, it cannot be detected. This might take a week or more.
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There is no 100% but 99% is sure something that can help.

Which product would you recommend ?
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Andy S

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If cryptolocker has taught us one thing, then it is that relying on AV can cause a lot of trouble.
Look at the concept of application whitelisting as in Applocker https://technet.microsoft.com/en-us/library/dd723678(v=ws.10).aspx or its predecessor, Software restriction policies https://technet.microsoft.com/en-us/library/hh831534.aspx

In short: only what you put on a list will run. Nothing else, no virus, network wide.
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