I'm looking for a better firewall test than ShieldsUp to recommend to others who worship GRC. Shouldn't be too hard. I'm just wondering what others (with more security testing experience) find most thorough. I checked the ones listed here (http://www.wilders.org/free_services.htm) but am curious if there are other good ones not listed. Maybe something fairly new? So far my fav is DSL Reports (http://www.dslreports.com/tools).