Date: Thu, 30 Jul 2020 17:23:23 -0400 From: Jon Radel <jon@radel.com> To: freebsd-questions@freebsd.org Subject: Re: Q. ntp pseudo service in a jail Message-ID: <68690da5-4a02-b3fc-896a-350b9d78f7a8@radel.com> In-Reply-To: <CAHu1Y73FLVBDsrd1f=LSFmpd8q-3VUjoLsYN07nEFgD2cBGxLg@mail.gmail.com> References: <62693624b2f310cc9683ed6b05d246b6.squirrel@webmail.harte-lyne.ca> <c20c3684-062c-afb0-fc14-d124e6ca81fc@radel.com> <CAHu1Y73FLVBDsrd1f=LSFmpd8q-3VUjoLsYN07nEFgD2cBGxLg@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
This is a cryptographically signed message in MIME format. --------------ms000507030502000007030204 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On 7/30/20 16:53, Michael Sierchio wrote: > On Thu, Jul 30, 2020 at 1:45 PM Jon Radel <jon@radel.com> wrote: > >> On 7/30/20 16:03, James B. Byrne via freebsd-questions wrote: >>> I need a jail to provide responses to ntp queries. I do not need (or= >> want) the >>> jail to adjust the system time. I just need it to provide whatever t= ime >> the >>> host OS has whenever it is queried. Can this requirement be met? >>> >>> >>> >> You can probably do what you want with the reference ntpd code if you >> set it up to have only a LOCAL driver. This takes the system clock as= >> the source of truth. > > server 127.127.1.0 > fudge 127.127.1.0 stratum 5 Higher than 5 is smiled upon; see https://support.ntp.org/bin/view/Support/UndisciplinedLocalClock where server 127.127.1.0 fudge 127.127.1.0 stratum 10 is suggested. > > >> Make sure to set a really high stratum with fudge so that people don't= >> have to hate on you if you leak the quite possibly crap time further >> than you expect. >> >> > LOCAL is going to get time from the host, right? Clocks are shared. I'm probably missing the point of what you're saying.... My point is that is that the OP appears to wish to setup a local ntp server with undisciplined time.=C2=A0 (No Internet access & no local hard= ware clock???)=C2=A0 If there is no connection of any sort to the rest of the world, nobody will much care, but if there is any risk of any external device trusting this ntp server, or any of its downstream ntp servers, then it is far better that the time be associated with a very high stratum number, to greatly reduce the risk that any device mistake this time as being accurate.=C2=A0 I'm unclear on what this has to do with sha= red clocks, whatever that may be. --=20 --Jon Radel jon@radel.com --------------ms000507030502000007030204 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgEFADCABgkqhkiG9w0BBwEAAKCC C9owggXmMIIDzqADAgECAhBqm+E4O/8ra58B1dm4p1JWMA0GCSqGSIb3DQEBDAUAMIGFMQsw CQYDVQQGEwJHQjEbMBkGA1UECBMSR3JlYXRlciBNYW5jaGVzdGVyMRAwDgYDVQQHEwdTYWxm b3JkMRowGAYDVQQKExFDT01PRE8gQ0EgTGltaXRlZDErMCkGA1UEAxMiQ09NT0RPIFJTQSBD ZXJ0aWZpY2F0aW9uIEF1dGhvcml0eTAeFw0xMzAxMTAwMDAwMDBaFw0yODAxMDkyMzU5NTla MIGXMQswCQYDVQQGEwJHQjEbMBkGA1UECBMSR3JlYXRlciBNYW5jaGVzdGVyMRAwDgYDVQQH EwdTYWxmb3JkMRowGAYDVQQKExFDT01PRE8gQ0EgTGltaXRlZDE9MDsGA1UEAxM0Q09NT0RP IFJTQSBDbGllbnQgQXV0aGVudGljYXRpb24gYW5kIFNlY3VyZSBFbWFpbCBDQTCCASIwDQYJ KoZIhvcNAQEBBQADggEPADCCAQoCggEBAL6znlesKHZ1QBbHOAOY08YYdiFQ8yV5C0y1oNF9 Olg+nKcxLqf2NHbZhGra0D00SOTq9bus3/mxgUsg/Wh/eXQ0pnp8tZ8XZWAnlyKMpjL+qUBy RjXCA6RQyDMqVaVUkbIr5SU0RDX/kSsKwer3H1pT/HUrBN0X8sKtPTdGX8XAWt/VdMLBrZBl gvnkCos+KQWWCo63OTTqRvaq8aWccm+KOMjTcE6s2mj6RkalweyDI7X+7U5lNo6jzC8RTXtV V4/Vwdax720YpMPJQaDaElmOupyTf1Qib+cpukNJnQmwygjD8m046DQkLnpXNCAGjuJy1F5N ATksUsbfJAr7FLUCAwEAAaOCATwwggE4MB8GA1UdIwQYMBaAFLuvfgI9+qbxPISOre44mOzZ MjLUMB0GA1UdDgQWBBSCr2yM+MX+lmF86B89K3FIXsSLwDAOBgNVHQ8BAf8EBAMCAYYwEgYD VR0TAQH/BAgwBgEB/wIBADARBgNVHSAECjAIMAYGBFUdIAAwTAYDVR0fBEUwQzBBoD+gPYY7 aHR0cDovL2NybC5jb21vZG9jYS5jb20vQ09NT0RPUlNBQ2VydGlmaWNhdGlvbkF1dGhvcml0 eS5jcmwwcQYIKwYBBQUHAQEEZTBjMDsGCCsGAQUFBzAChi9odHRwOi8vY3J0LmNvbW9kb2Nh LmNvbS9DT01PRE9SU0FBZGRUcnVzdENBLmNydDAkBggrBgEFBQcwAYYYaHR0cDovL29jc3Au Y29tb2RvY2EuY29tMA0GCSqGSIb3DQEBDAUAA4ICAQB4XLKBKDRPPO5fVs6fl1bsj6JrF/bz 9kkIBtTYLzXN30D+03Hj6OxCDBEaIeNmsBhrJmuubvyE7HtoSmR809AgcYboW+rcTNZ/8u/H v+GTrNI/AhqX2/kiQNxmgUPt/eJPs92Qclj0HnVyy9TnSvGkSDU7I5Px+TbO+88G4zipA2ps ZaWeEykgzClZlPz1FjTCkk77ZXp5cQYYexE6zeeN4/0OqqoAloFrjAF4o50YJafX8mnahjp3 I2Y2mkjhk0xQfhNqbzlLWPoT3m7j7U26u7zg6swjOq8hITYc3/np5tM5aVyu6t99p17bTbY7 +1RTWBviN9YJzK8HxzObXYWBf/L+VGOYNsQDTxAk0Hbvb1j6KjUhg7fO294F29QIhhmiNOr8 4JHoy+fNLpfvYc/Q9EtFOI5ISYgOxLk3nD/whbUe9rmEQXLp8MB933Ij474gwwCPUpwv9mj2 PMnXoc7mbrS22XUSeTwxCTP9bcmUdp4jmIoWfhQm7X9w/Zgddg+JZ/YnIHOwsGsaTUgj7fIv xqith7DoJC91WJ8Lce3CVJqb1XWeKIJ84F7YLXZN0oa7TktYgDdmQVxYkZo1c5noaDKH9Oq9 cbm/vOYRUM1cWcef20Wkyk5S/GFyyPJwG0fR1nRas3DqAf4cXxMiEKcff7PNa4M3RGTqH0pW R8p6EjCCBewwggTUoAMCAQICEHQDryTAYaEsgncP8aGW6o4wDQYJKoZIhvcNAQELBQAwgZcx CzAJBgNVBAYTAkdCMRswGQYDVQQIExJHcmVhdGVyIE1hbmNoZXN0ZXIxEDAOBgNVBAcTB1Nh bGZvcmQxGjAYBgNVBAoTEUNPTU9ETyBDQSBMaW1pdGVkMT0wOwYDVQQDEzRDT01PRE8gUlNB IENsaWVudCBBdXRoZW50aWNhdGlvbiBhbmQgU2VjdXJlIEVtYWlsIENBMB4XDTE4MDMwNDAw MDAwMFoXDTIxMDMwMzIzNTk1OVowgfoxCzAJBgNVBAYTAlVTMQ4wDAYDVQQREwUyMjE1MDEL MAkGA1UECBMCVkExFDASBgNVBAcTC1NwcmluZ2ZpZWxkMRowGAYDVQQJExE2OTE3IFJpZGdl d2F5IERyLjEVMBMGA1UEChMMSm9uIFQuIFJhZGVsMTIwMAYDVQQLEylJc3N1ZWQgdGhyb3Vn aCBKb24gVC4gUmFkZWwgRS1QS0kgTWFuYWdlcjEfMB0GA1UECxMWQ29ycG9yYXRlIFNlY3Vy ZSBFbWFpbDESMBAGA1UEAxMJSm9uIFJhZGVsMRwwGgYJKoZIhvcNAQkBFg1qb25AcmFkZWwu Y29tMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAtK/dFQxMTnVPcP1TI09m30v8 rSG/VWSFWfFvu/2jzPkNL+ivx6A4LNUbqw4CS73GIKcbp8IrpNQz2oQV6mTv+KVJzJMf8GjA y8EzZjhc2tAXL+Q57omCTuAc6cw2KDYFL0aNWX4CEe/LqfoBDKpJF7HCrwwus55+tTEkAY8j tRkQRMHf47YQVJjD/4pdC/h+7jjI0oSgh1npT7Q3K47g6IkVzjhiH8LCsCSVYaLzRZfgcl3s 0GLE858PV/84l5d/hUVD0u9J2EdKpf+hnFqZnA3qw9R0xFQIE6yOkUvhALw1zxXaiGj0047a gBE2Bhv2UIlj6Q0zPa5kRYDy9vBI6QIDAQABo4IBzTCCAckwHwYDVR0jBBgwFoAUgq9sjPjF /pZhfOgfPStxSF7Ei8AwHQYDVR0OBBYEFHS/Ewun4pYC9Lla5kkmj4zo7tKcMA4GA1UdDwEB /wQEAwIFoDAMBgNVHRMBAf8EAjAAMB0GA1UdJQQWMBQGCCsGAQUFBwMEBggrBgEFBQcDAjBG BgNVHSAEPzA9MDsGDCsGAQQBsjEBAgEDBTArMCkGCCsGAQUFBwIBFh1odHRwczovL3NlY3Vy ZS5jb21vZG8ubmV0L0NQUzBaBgNVHR8EUzBRME+gTaBLhklodHRwOi8vY3JsLmNvbW9kb2Nh LmNvbS9DT01PRE9SU0FDbGllbnRBdXRoZW50aWNhdGlvbmFuZFNlY3VyZUVtYWlsQ0EuY3Js MIGLBggrBgEFBQcBAQR/MH0wVQYIKwYBBQUHMAKGSWh0dHA6Ly9jcnQuY29tb2RvY2EuY29t L0NPTU9ET1JTQUNsaWVudEF1dGhlbnRpY2F0aW9uYW5kU2VjdXJlRW1haWxDQS5jcnQwJAYI KwYBBQUHMAGGGGh0dHA6Ly9vY3NwLmNvbW9kb2NhLmNvbTAYBgNVHREEETAPgQ1qb25AcmFk ZWwuY29tMA0GCSqGSIb3DQEBCwUAA4IBAQBUNLBptNFZRBkOUPOCI9TPM6QauLK6jojtbxZO XWvZfKvq8ukWUZTPtaDS5UjsMhlxLf/Crv8HkiVXSzC36cVQyjNjl1u+u/Sbl/6q/TfQk+aK 5jzDd4onQVzlfE33ymtZJgh+4dMPWKuXjRS0OyMLzv3mYCvFO83l1G9rBiaCEfFJHKgVGY1z 3ZU/gsPCQ2a0xf3908lwl5H3SPB3ZzLWDf41o5zV70HXfsgP862KzxU9t46XBGZ8TRl/5fl+ Xj2KQdpyWlNZUS00/UHznxeFO5+bkNaOg24BjwfBOWi0D47CE+6BRWvtrmgciWxefUuYeeIy Qr58KK8DlBCkVF06MYIENTCCBDECAQEwgawwgZcxCzAJBgNVBAYTAkdCMRswGQYDVQQIExJH cmVhdGVyIE1hbmNoZXN0ZXIxEDAOBgNVBAcTB1NhbGZvcmQxGjAYBgNVBAoTEUNPTU9ETyBD QSBMaW1pdGVkMT0wOwYDVQQDEzRDT01PRE8gUlNBIENsaWVudCBBdXRoZW50aWNhdGlvbiBh bmQgU2VjdXJlIEVtYWlsIENBAhB0A68kwGGhLIJ3D/GhluqOMA0GCWCGSAFlAwQCAQUAoIIC WTAYBgkqhkiG9w0BCQMxCwYJKoZIhvcNAQcBMBwGCSqGSIb3DQEJBTEPFw0yMDA3MzAyMTIz MjNaMC8GCSqGSIb3DQEJBDEiBCC/Pbx6ObHwJYZVhxKt6fgmnSjQ1L3la6X9RSfd/sryHTBs BgkqhkiG9w0BCQ8xXzBdMAsGCWCGSAFlAwQBKjALBglghkgBZQMEAQIwCgYIKoZIhvcNAwcw DgYIKoZIhvcNAwICAgCAMA0GCCqGSIb3DQMCAgFAMAcGBSsOAwIHMA0GCCqGSIb3DQMCAgEo MIG9BgkrBgEEAYI3EAQxga8wgawwgZcxCzAJBgNVBAYTAkdCMRswGQYDVQQIExJHcmVhdGVy IE1hbmNoZXN0ZXIxEDAOBgNVBAcTB1NhbGZvcmQxGjAYBgNVBAoTEUNPTU9ETyBDQSBMaW1p dGVkMT0wOwYDVQQDEzRDT01PRE8gUlNBIENsaWVudCBBdXRoZW50aWNhdGlvbiBhbmQgU2Vj dXJlIEVtYWlsIENBAhB0A68kwGGhLIJ3D/GhluqOMIG/BgsqhkiG9w0BCRACCzGBr6CBrDCB lzELMAkGA1UEBhMCR0IxGzAZBgNVBAgTEkdyZWF0ZXIgTWFuY2hlc3RlcjEQMA4GA1UEBxMH U2FsZm9yZDEaMBgGA1UEChMRQ09NT0RPIENBIExpbWl0ZWQxPTA7BgNVBAMTNENPTU9ETyBS U0EgQ2xpZW50IEF1dGhlbnRpY2F0aW9uIGFuZCBTZWN1cmUgRW1haWwgQ0ECEHQDryTAYaEs gncP8aGW6o4wDQYJKoZIhvcNAQEBBQAEggEAXRwgD9KZnKbzykZyIP7JXTGdVk+NnG/3rhDg +PQtHNKzpGYdu2W/xm+IrZro/KFlzBFJtr1OGFFyl87udEpE5NkSx20GzJiz4Zw76q9nVCMB P2VxZVy0FZ4ImrpctJlDHH7glOKOn5hojeMS+5LiCUbMDFZFZiwBC2JWKC/I+wrNd7GisD6h 6ZaK+0fA9WLgk9Ff6pt97Z7h5LIqo0BUhTUpM53sytZLIfxKHa4E8AyvlkR+p8YJtaJlSfle EdrnxhLtOvUHvmb07EhCxEh5JFGg/PBDTmJ7GOT3iHtDpF5nc1rbTfP003XI/3i8zOpPLumA stLCXz6X1AcPUuwgsQAAAAAAAA== --------------ms000507030502000007030204--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?68690da5-4a02-b3fc-896a-350b9d78f7a8>