How to set up a file server for remote access?

[kylera]

I have a 2011 iMac 27-inch running Yosemite. I'd like to designate a folder on my external hard drive that's connected to it so I can access the files on it while I'm out and about. I also have an Airport Extreme - the model before Apple came out with the tower-shaped model.

Can someone point me to a tutorial or tutorials that can help me deal with things like port forwarding and all that?

 

[BrianBaughn]

You have many options. I'll throw this one out there because the instructions are all in one place: OwnCloud

Strike that...on second thought probably not a good idea for you.

 

[satcomer]

Maybe this: http://www.greenworldsoft.com/product-vpn-server-agent-help.php