Ghosts of Marburg?

A strange postscript to my earlier post on pornography: I am currently staying on a campsite owned by the Lutheran Church - Missouri Synod.  Last night I tried to access the Presbyterian website, the Aquila Report via the wireless network and received this message from whatever security filters the campsite uses:

This is a known pornography website, which is blocked as specified in your defense plan.
I know that the Lutherans don't like the Reformed position on the communication of attributes, but regarding such as pornography?  I say, chaps, steady on......