I like that there are many options to choose between when setting my firewall rules, as well as being able to make customizations for each program separately using categories or lists instead of just one big list. Sometimes programs will have an option available in their preferences but not under "Firewalls" which is great because then those can be added with ease through this application. It's also really easy to use once you've got used to how things work. Sometimes new features require additional updates/upgrades to existing plugins, so sometimes older versions may need some tweaking before they'll allow access without asking for admin password. This usually isn't too bad though since updating software often comes bundled together if needed anyway (like Adobe CS6). We're trying out several different applications at our office currently including Evernote, Dropbox, Google Drive etc., none of them providing us with everything we want in terms of security. So far MacShine has been pretty.