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Leif, I agree with you 100%. Security through powerful keyed encryption algorithms is the best (although of course a determined intruder gets in by simply compromising your keys, perhaps through good old-fashioned espionage). However, a proprietary protocol between machines is a step up from standardized, non-secure access. When two machines on the internal network are communicating, which is the case I am addressing - DMZ to production machines - then a proprietary protocol is a good additional security measure. Certainly better than straight ODBC access. Do you agree or disagree with that statement? Encrypted communication between DMZ and production machines would be the next level, and using it would depend on the sensitivity of your data, the level of perceived threat, and the expense you're willing to shoulder. How easy is it to implement a triple-DES connection between two machines? How expensive? Joe
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