Computer A - my webserver with one sql table only holding encrypted data for connection to Computer B which contains the data needed to populate the website on Computer A via returned XML. Computer B is external to the domain of Computer A. Computer A is in a DMZ zone.
Computer B has incoming 1433 open only to the ip address of Computer A. Is the round trip data, sql from Computer A to Computer B and xml results from Computer B returning to Computer A secure?