I had another look at the challenge and was able to work my way through it. I’ve been looking over level 3 and comparing it to various peoples notes. These challenges were great. Have you ever done any of Ed Skoudis’s hacker challenges? the most recent one was created by Mike Poor. They’re usually good, and there’s usually an autographed copy of one of Ed’s books for the prize. I entered the last one and am still waiting for the winners to be selected.