I have used Kerio for a long time... I recently uninstalled it due to it's nagging and some bug issues was getting with the new version. I tried out a few different softwares, including Comodo. Comodo seems to be the best replacement I have found so far, but I really do not feel safe with it. I have witnessed Comodo allowing programs to use my connection without it prompting and I have double checked my configuration to ensure that I have no settings that would allow such. I am looking for a solid replacement for Kerio that will provide me with bi-directional protection and if possible application execution protection. I am looking for a free solution.