I understand OS X has the Application Firewall which allows you to control connections on a per-application basis, rather than a per-port basis. I have developed an application that utilizes UDP and ...
I don't want others on the same network (or any network!) to be able to access my machine at port 80, where I have dev websites. I've tried adding this rule to ipfw: deny tcp from any to any ...
I currently use Little Snitch to control network traffic on my Macbook Pro, and see what my apps are connecting to. Unfortunately, Little Snitch only shows you the hostname that an app is connecting ...