UK2, Rails and Firewalls
I’ve just started using UK2.net for some web hosting tasks. Thus far the experience has been a positive one, and in any case I’m not one to publicly slag off companies.
One wrinkle I did discover yesterday, though – their firewall is remarkably sensitive to any unexpected traffic, and will block an IP for any activity it deems to be unusual. This has implications for using their Ruby on Rails setup.
When you create a Ruby on Rails app, it is set to run on your domain on a high port (12000+). Their system does allow you to set up a redirect, so that accessing a specific URL or subdomain will be seamlessly passed through to the Rails app. Actually, this turns out to be mandatory – if you try to access the app directly through its high port, the UK2 firewall will deem this to be malicious traffic and instantly block your IP address.