How to access from anywhere?

Server
1

Hi. I installed owncloud on ubuntu server 14.04 (in virtualbox) and it works great, but I can't figure out how to access it outside of my home network. Can anybody help?

2

As this is unrelated to ownCloud some keywords for a short research:

NAT
Port Forwarding
Bridged Mode (virtualbox)

Pages like https://portforward.com/ might also give additional info / help.