Vincent Lefevre writes: > Unfortunately none of them is secure, I mean: some attacker won't tend > to make the date on your machine incorrect because of lack of > authentication. http://www.ntp.org/ntpfaq/NTP-s-config-adv.htm See section 6.6.2, Authentication Even without it, though, sucessfully spoofing all four of the servers you use would be challenging. -- John Hasler jhasler@newsguy.com Elmwood, WI USA