Looking for help configuring Filter Rules and MD5 settings under "Administration > "Advanced" in Kerio 2.1. This stuff is way above my level of understanding. Any ideas on a standard configuration for the average novice user or items of major concern (critical settings). This firewall seems to be blocking some unauthorized connections, but I am worried that I am missing something. I am running the middle setting "Ask Me First" under Administration, and have set some rules for using programs like Outlook Express for example, but other than this... things get really fuzzy. Thanks for any suggestions.