Not super criticial but it seems that the DPI definition for iMessage is not up-to-date or is no longer working when I use it in a firewall rule for Apple iMessage both on the iphone and OSX. For example, when I make a firewall rule to drop all iMessage packets, I am still able to send and recieve texts via iMessage (not SMS). I know this is a moving target but I just wanted to give you a heads up!
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