Eric and Jim Batch Eric wrote to Jim on Aug 10: The ability to access EPICS channels appears to have disappeared at LHO when connected to h1hwinj: [hinj@h1hwinj1 eric.thrane]$ ezcaread H1:CAL-INJ_TINJ_STATE channel H1:CAL-INJ_TINJ_STATE not accessible However, the same command works fine from cdsssh: eric.thrane@cdsssh:~$ ezcaread H1:CAL-INJ_TINJ_STATE H1:CAL-INJ_TINJ_STATE = 1 This problem appears to have occurred after ER7 since we would have seen errors during transient injections otherwise. Your assistance would be greatly appreciated. Jim wrote back on Aug 11: The problem has been resolved. An update turned on some rather restrictive network filtering.