Do I need TMG to publish Exchange 2010 securely

I am moving from Exchange 2003 to Exchange 2010, and I will need to publish OWA and Active Sync.

Is there an alternative way to do this securely without using TMG 2010?
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AkhaterConnect With a Mentor Commented:
you can simply reverse NAT directly on your firewall port 443 to the exchange server. of course the security will be less than having it through TMG since connections will be terminiated on the exchange server and not on the TMG but for most setups this might be good enough.

alternatively you don't need TMG, any reverse proxy will do (apache will do for example)
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