Remote access

Hey there,
I work in a school as an ICT technician and I sometimes need to log onto my computer at my home network.

I currently use LogMeIn but it is kind of slow and very limited.

Is there any way of maybe using OpenVPN or VNC to access my home network of the internet?
Taking into account that my internet is restricted at work due to the proxy and Webserve
Hope to hear from you

Tim