Connection and security

[quwiltw]

This question isn't really ADO.NET specific, I just never questioned it with regular ADO. My question is how secure is the connection to a database using ADO.NET? There are numerous articles on authentication (best approaches, etc), but I'm curious as to the actual data communication over the wire. If some cracker had a packet sniffer, what info could they get? Specifically, when I create a parameter object and add it to the command and execute it, if someone was looking at the network traffic could they get that data or is it encrypted or what? Any answers or articles would be appreciated.