Raising Software :: Marian Mihailescu

In our university network, the staff computers are part of a secure network that is only accessible through a VPN connection. Unfortunately, even if you connect to the VPN, there is a firewall that blocks most of the connections. I recently had to make several trips to helpdesk and show that in my building, not even SSH connection are allowed to pass through the firewall. After several days the firewall rules were updated and now SSH works.

From this setup arises my problem: I cannot print to my office printer, which is, of course, connected to my office computer. I could go again to helpdesk, explain my problem, wait until they forward the issue to the technical team, and hope that in a couple of days they will allow access to CUPS. Or, I could try and print over SSH. Fortunately, I am not the only one in this world that wanted the latter.

So here is how to do it in Mac OS X.

This guide follows my progress as I install and configure a private cloud using OpenNebula. The infrastructure that hosts the private cloud consists of three computers: one dual-core Core 2 Duo machine that acts as the front-end node and two dual-processor quad-core Xeon machines that act as the nodes hosting the virtual machines. The font-end machine has two network interfaces, one connected to the public network (and the Internet), and the other connected to the private network. The cluster nodes have only one network interface, connected to the private network.