No, it's not about rule configuration. I'm actually trying Comodo at the moment and have already created/prioritized the rule for allowing traffic on my non-default RDC port. When I was using Kerio, though - and that was for a LONG time (and I might still switch back) - something weird would happen from time to time. I use remote desktop connections quite frequently, and when I would connect, the taskbar would quite literally be filled 3/4ths across, right to left, with the Kerio tray icon. No popups/prompts; just a flood of little blue shields. I don't remember if this happened with versions prior to 4.3.268. As with the behavior you'd expect to see with an icon for an application that crashed, mousing over these removed them. Kerio, however, was just fine (although I have, on different occasions, had a crash or two for reasons unknown). It's strange. Just wondering if anyone has any idea as to why this is.