On 22/08/2015 14:08, Gert Doering wrote: > able to provide time to others, etc. - and on 1900s with 15.2(4)M6a > (NTP ACLs not working at all) sounds like CSCuj66318: http://tools.cisco.com/security/center/viewAlert.x?alertId=34884 Fixed in 15.2(4)M6.3. As this is a security vulnerability, there is a FoC upgrade available. Nick