First Application to be exposed to the internet

[MAM]

Hello,

I've done several .NET web applications, for intranet enviroments. I am
working right now in what will be my first app. to be exposed to the
internet. I have had some conversations with other programmers and the
Network Administrator, and they are concerned for the security, they want be
to create text files that will be transfered to the internal network instead
of using SQL Server. I have the feeling they must a better way to do so in a
secure way. So I'm looking for best practices related to security for we
application using .NET.

Were can I find this information,


Thanks