Date: Tue, 18 Dec 2018 18:14:25 -0700 From: Warner Losh <imp@bsdimp.com> To: "Julian H. Stacey" <jhs@berklix.com> Cc: "Rodney W. Grimes" <freebsd-rwg@pdx.rh.cn85.dnsmgr.net>, "freebsd-arch@freebsd.org" <arch@freebsd.org>, George Neville-Neil <gnn@neville-neil.com> Subject: Re: A proposal for code removal prior to FreeBSD 13 Message-ID: <CANCZdfq4pB8eDhrmfcNsJXDQZoa9iSRykjc%2Bo%2Bem5kozGFdx_w@mail.gmail.com> In-Reply-To: <201812182338.wBINcHKi057605@fire.js.berklix.net> References: <CANCZdfqK9T3x8=z14pPbg7pLNfUz4JcErhSEEsJMvU5h_EnZFw@mail.gmail.com> <201812182338.wBINcHKi057605@fire.js.berklix.net>
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On Tue, Dec 18, 2018 at 4:38 PM Julian H. Stacey <jhs@berklix.com> wrote: > > And you are trying to conflate two different issues. timed is not useful. > > Exageration is not useful ;-) Timed is useful. > It has an extremely use usefulness index to the vast majority of our user base. Absent good metric data about what our users have deployed, I can't say that with certainty. But given the difficulty of running a timed network, both in terms of setup and operations, as well as its severe technical limitations wrt to competitors (ntp, ptp, openntp, etc) I'd be very very surprised if the number of current deployments are in double digits. > > Technically, it's a crappy solution. > > OK. But in a heterogenous net, it's nice to retain flexibility. > I'm not sure I understand how that helps. timed is a bit of a niche thing, that works only on a local area segment over ICMP. ntp, on the other hand, is widely implemented and deployed and gets through most firewalls. > > The data is also > > unencrypted / unauthenticated, with no provision to change that. This > makes > > it spoofable. > > Some suggested years past: Run over a ssh. Not tried as here it's inside a > wall. > >From the timed man page: "The average network time is computed from measurements of clock differences using the ICMP timestamp request message." How are you going to run that on top of ssh? I didn't think ssh had a ICMP mode... However, having said all that, there's a volunteer who will package up timed into a port. I'm working with him right now to fix some minor issues in the straight copy of the timed stuff into my repo and that should be live shortly after that, so anybody that needs it can do 'pkg add timed' Warner
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