This page explains how to use the Informatics OpenVPN service on a Mac.
(Summary: get admin rights; install the software; add the configuration files; connect.)
Before going further, you will need to have admin rights on your Mac.
The available Informatics client configuration consists of several short files, described below, which you should download and save as appropriate for your system. If you have AFS available you can copy these directly from /afs/inf.ed.ac.uk/group/inf-unit/OpenVPN/Config/; if not, you can download them from here (we recommend that you right-click on the individual links and 'save link as'). You may also find that emailing the files to yourself as attachments works as a way to download them to phones or other similar devices.
If there are platform-specific versions of the configurations you should use those in preference to the generic versions, as there may be additional tweaks intended to improve your experience.
If you simply need a VPN, you should use the University VPN, and you can find out more here:
To get the Informatics OpenVPN up and running, see these detailed instructions: