The My Surveillance app supports the DCS-942L. Yes, you can setup FTP, but I believe you will find it much easier and much more flexible to use the DNS-327L to manage recordings rather than manually configuring FTP. I use a similar app native to the DNS-345 -- and given the functionality and power of the app, I wouldn't even bother with FTP unless you absolutely have to.
A side benefit is that if you purchase multiple cameras, you can manage all of them, along with archived recordings, from a centralized application rather than saved files in an FTP directory.