It has come to our notice that a fresh install of Symantec Endpoint Protection, following all the configuration steps suggested in <http://www.dartmouth.edu/comp/soft-comp/software/downloads/windows/sav.html>, can result in a system blocking the traffic used for authentication. It can be fixed by creating a new rule explicitly allowing UDP traffic from the applications "afscreds.exe" and "klog.exe". Other OpenAFS utilities and the core client functionality don't seem to need any special configuration. If you use OpenAFS on Windows and have Symantec Endpoint Protection installed, please let us know if you have encountered problems. It will be very obvious -- the authentication tools will complain that they cannot reach any authentication servers. This situation seems to have arisen some time in the last few months. Richard -- Richard Brittain, Research Computing Group, Computing Services, 37 Dewey Field Road, HB6219 Dartmouth College, Hanover NH 03755 [log in to unmask] 6-2085