After noticing a string of bogus login attempts on my router, I went around tightening up the security as best I could, and I managed to lock myself out of the web administration form. I can still connect over SSH, I just have no idea where the config file I need is or where to even begin looking.
I put in a range of IPs into what I believe was an allowed login form, but either I was mistaken, or I made a typo. I'm almost certain it was under the Administration grouping. I'm sorry I can't give a more direct explanation of what I managed to break, seeing as I can't really get back into it to accurately find where I was. Help much appreciated!