Reading CSV file in FTP Server

I've been trying to access a CSV file filled with data that's on a flash drive connected to my router through an FTP server. I know how to parse the data with loadStrings() and I've set up FTP on my router, I can view the file with the address through chrome, etc. The trouble comes when accessing it through Processing, I've tried something like data = loadStrings("ftp://[FTPAddress]/[Directory]/data.csv"); but it says it doesn't exist/is inaccessible. Am I using the wrong method? Is there something else I need to set on my router? Do I need some obscure library? Any help is appreciated. :)