I'm new to the product, and we are currently doing a POC using Citrix to push out PWB to thin clients for inmates to use for access to some very specific websites.
I have PWB locked down fairly well by use of some Group Policies and firewall rules, however I am looking for ways to lock it down even further. Things that I am looking for:
1. Is it possible to disallow key combinations all-together? For example, CTRL+E gives us an error message saying the the "Address is not valid", but we would prefer that there is no way for them to even attempt to go to another address

2. I was able to disallow pop-up windows, but even though I changed the security levels in Internet Explorer, I am still unable to rid PWB of the "Do you want to display nonsecure items" pop-up. This pop-up can potentially allow the users access that we wouldn't want them to have, even though we locked things down at the firewall level. The more layers of restriction the better.
Any input and ideas are welcome. Like I said, this is merely a POC at the moment, but right now PWB is looking promising. We just have some kinks to work out.