This is a ton of fun! Small suggestions:

    - A way to copy (or better yet, email) a session link so I can switch between devices while maintaining my progress
    - Allow 1 and 2 to function as hotkeys for Allow and Block, so I don't have to move between "a" and "b" for Allow and Block, and then the number keys for the block reason

Only tested the first round but identifying SQL injections and XSS brings back memories. Fun project!

So, it's "Papers, Please" but you're a firewall? I like it. Pretty cool.

This is really fun, I enjoyed it a ton!