I have some colleagues who need to go to China for work, however while they're there, they can't access a lot of sites. One of which is GMail (Google Apps), which they need for work. We have a UK based Ubuntu server, which I have root access for.
What can I do for them? I thought about a Squid proxy, but it might rely on their hotel having port 8080 open, so, not ideal. Are there any workarounds or other solutions?