nanog mailing list archives
Re: ntp config tech note
From: John Kristoff <jtk () northwestern edu>
Date: Thu, 20 May 2004 20:18:10 -0500
On Thu, 20 May 2004 17:33:22 -0400 Jared Mauch <jared () puck nether net> wrote:
I'm also wondering, how many people are using the ntp.mcast.net messages to sync their clocks? what about providing ntp
We have had one user that I know of who was receiving time sync info via multicast announcements, but personally I don't care for doing NTP this way. In my experience systems/users don't bother to do any sort of authentication or filtering on NTP sources. Most server admins and some implementations do not support authentication either. I'm pretty sure I don't want to get time from just anyone who sends to 224.0.1.1 especially on networks connected to the multicast-enabled Internet. That group address I might note is one I tend to scope at admin boundaries for just that reason. John
Current thread:
- Re: ntp config tech note, (continued)
- Re: ntp config tech note Adrian Chadd (May 20)
- Re: ntp config tech note Randy Bush (May 20)
- Re: ntp config tech note sthaug (May 21)
- Re: ntp config tech note C. Jon Larsen (May 21)
- Re: ntp config tech note Eric A. Hall (May 21)
- Re: ntp config tech note Mike Leber (May 24)
- Re: ntp config tech note Crist Clark (May 21)
- Re: ntp config tech note james edwards (May 21)
- Re: ntp config tech note Charles Sprickman (May 20)
- Re: ntp config tech note Pekka Savola (May 21)
- Re: ntp config tech note John Kristoff (May 20)
- Re: ntp config tech note Michael Sinatra (May 20)
- Re: ntp config tech note John Kristoff (May 21)
- Re: ntp config tech note Michael Sinatra (May 21)
- Re: ntp config tech note Stephen J. Wilcox (May 23)
- Re: ntp config tech note Tony Li (May 23)
- Re: ntpd config tech note redux Steven M. Bellovin (May 20)
- Re: ntpd config tech note redux Petri Helenius (May 20)