Set up ad-hoc FTP server? A client wants to send me a very large file (3+ GB), but I'm kind of at a loss on how to receive it. My Dropbox is full, and I don't have any other kind of file sharing service. Sites like WeTransfer.com have a file size limit.

So, I looked into using Homebrew to install vsftpd or proftpd, but they're not that straightforward to set up. I really just want a simple FTP server I can launch, make up a username and password, and have my client FTP in to upload the file directly to my Mac. 

I need something that will let me specify a different port number other than the standard FTP port.

How can I do this?

I'm using Mac OS 10.9.5, BTW.
You could install OS X Server. Then you will be able to start a ftp server in few clicks.