Lines Matching +full:acquisition +full:- +full:time +full:- +full:ns
1 /* -*- Mode: Text -*- */
7 // We want the synopsis to be "/etc/ntp.conf" but we need the prog-name
8 // to be ntp.conf - the latter is also how autogen produces the output
10 prog-name = "ntp.conf";
11 file-path = "/etc/ntp.conf";
12 prog-title = "Network Time Protocol daemon (ntpd) configuration format";
15 explain = <<- _END_EXPLAIN
18 doc-section = {
19 ds-type = 'DESCRIPTION';
20 ds-format = 'mdoc';
21 ds-text = <<- _END_PROG_MDOC_DESCRIP
48 host addresses written in numeric, dotted-quad form,
64 .Bl -bullet -offset indent
113 If the Basic Socket Interface Extensions for IPv6 (RFC-2553)
141 .Bl -tag -width indent
189 These five commands specify the time server name or address to
194 either a DNS name or an IP address in dotted-quad notation.
201 .Bl -tag -width indent
221 persistent symmetric-active mode association with the specified
228 the better source of time.
284 providing the best time and continues as with the
292 .Bl -tag -width indent
309 acquisition with the
362 It specifies the time-to-live
375 Versions 1-4 are the choices, with version 4 the
392 .Bl -tag -width indent
397 the first time, the broadcast client measures the nominal server
403 server and client should operate using symmetric-key or public-key
416 and client should operate using symmetric-key or public-key
423 a message for the first time, the multicast client measures the
429 both the server and client should operate using symmetric-key or
430 public-key authentication as described in
434 after we have synched for the first time
452 specification RFC-1305 defines a scheme which provides
457 DES-CBC.
459 5 (MD5) algorithm using a private key, commonly called keyed-MD5.
460 Either algorithm computes a message digest, or one-way hash, which
581 .Ss Symmetric-Key Cryptography
582 The original RFC-1305 specification allows any one of possibly
583 65,535 keys, each distinguished by a 32-bit key identifier, to
631 described in RFC-1305 and in addition the Autokey protocol,
659 All modes use in addition a variant of the S-KEY scheme,
660 in which a pseudo-random key list is generated and used
670 .Xr ntp-keygen 1ntpkeygenmdoc
745 The cryptotype of an association is determined at the time
746 of mobilization, either at configuration time or some time
774 Following the principle that time is a public value,
800 Bob sends Cathy a thing called a crypto-NAK, which tells her
813 all the girls at the same time, as long as he has compatible
824 .Xr ntp-keygen 1ntpkeygenmdoc
857 .Bl -tag -width indent
872 protocol defined in RFC-1305.
903 .Bl -tag -width indent
907 .Pa ntpkey_cert_ Ns Ar hostname
913 .Pa ntpkey_gq_ Ns Ar hostname
919 .Pa ntpkey_key_ Ns Ar hostname
924 .Pa ntpkey_iff_ Ns Ar hostname
934 .Pa ntpkey_mv_ Ns Ar hostname
974 Specifies the interval between re-randomization of certain
978 deflect brute-force attacks on the algorithms of the scheme;
998 arguments are 32-bit unsigned
1004 .Bl -tag -width indent
1011 This could be due to a replay or a server clock time step.
1074 .Bl -tag -width indent
1080 .Bl -tag -width indent
1087 .Bd -literal
1091 The first two fields show the date (Modified Julian Day) and time
1094 clock address in dotted-quad notation.
1109 .Bd -literal
1113 The first two fields show the date (Modified Julian Day) and time
1116 address in dotted-quad notation, The final message field includes the
1127 .Bd -literal
1132 time (seconds and fraction past UTC midnight).
1134 show time offset (seconds), frequency offset (parts per million -
1136 discipline time constant.
1146 .Bd -literal
1147 48773 10847.650 127.127.4.1 9714 -0.001605376 0.000000000 0.001424877 0.000958674
1151 time (seconds and fraction past UTC midnight).
1153 show the peer address in dotted-quad notation and status,
1160 Enables recording of raw-timestamp statistics information.
1168 .Bd -literal
1173 time (seconds and fraction past UTC midnight).
1176 in dotted-quad notation.
1188 .Bd -literal
1192 The first two fields show the date (Modified Julian Day) and time
1197 .Bl -tag -width indent
1198 .It Time since restart Cm 36000
1199 Time in hours since the system was last rebooted.
1240 At any time at most one element
1253 .Bl -tag -width indent
1266 .Bl -tag -width indent
1274 server, usually specified as a compile-time constant.
1308 .Bl -tag -width indent
1340 is a 4-digit year number (e.g., 1992).
1348 .Ar filename Ns .19921210 .
1352 The term week is defined by computing day-of-year
1356 filename base: A dot, a 4-digit year number, the letter
1358 and a 2-digit week number.
1361 .No . Ns Ar 1992W1 .
1365 file name suffix consists of a dot, a 4-digit year number, and
1366 a 2-digit month.
1377 and an 8-digit number.
1379 running at the start of the corresponding 24-hour period.
1434 time servers.
1461 .Ss The Kiss-of-Death Packet
1469 for this purpose called the "kiss-of-death" (KoD) packet.
1471 to zero and the reference identifier field set to a four-byte
1497 .Bl -tag -width indent
1515 and a kiss-o'-death packet returned if enabled.
1565 where a value of -1 means "unlimited", the current default.
1579 categories, those which restrict time service and those which
1580 restrict informational queries and attempts to do run-time
1584 .Bl -tag -width indent
1592 If this flag is set when a rate violation occurs, a kiss-o'-death
1631 to become the default in ntp-4.4.
1638 server (i.e., run time reconfiguration).
1647 Time service is not affected.
1719 Remove a previously-set restriction. This is useful for
1726 template at the time
1738 and evaluate their time values with respect to other servers
1746 with the anycast paradigm described in RFC-1546,
1778 and minimum feasible time-to-live (TTL) hops, depending
1808 in a volley of eight client/server at 2-s intervals
1821 and the effects of implosion due to near-simultaneous
1988 will time out the corresponding association and
1989 re-associate accordingly.
2013 Each time a manycast client sends a client mode packet
2038 At the same time, the manycast
2043 .Bl -tag -width indent
2051 believing backward time steps from a broadcast server.
2052 Broadcast time networks are expected to be trusted.
2053 In the event a broadcast server's time is stepped backwards,
2063 .Bl -tag -width indent
2080 .Bl -tag -width indent
2131 in an expanding-ring search.
2137 satellite and modem reference clocks plus a special pseudo-clock
2157 .Qq Pulse-per-second (PPS) Signal Interfacing
2175 time such as the services offered by the NRC in Canada and NIST and
2207 number in the range 0-3.
2267 device-dependent time offsets and four flags that can be included
2284 involving both a reference clock and a pulse-per-second (PPS)
2293 .Bl -tag -width indent
2306 .Bl -tag -width indent
2321 device-specific fashion.
2363 is possible at run time using the
2368 .Bl -tag -width indent
2370 Specifies a constant to be added to the time offset produced by
2371 the driver, a fixed-point decimal number in seconds.
2373 as a calibration constant to adjust the nominal time offset of a
2399 Specifies a fixed-point decimal number in seconds, which is
2400 interpreted in a driver-dependent way.
2421 device-specific fashion.
2450 .Bl -tag -width indent
2478 frequency of zero and creates the file when writing it for the first time.
2484 in parts-per-million (PPM).
2495 a 6-bit code.
2523 .Bl -tag -width indent
2544 Enables the kernel time discipline, if available.
2551 Enables processing of NTP mode 7 implementation-specific requests
2575 Enables time and frequency discipline.
2585 receives a crypto-NAK packet that
2590 a properly forged and appropriately delivered crypto-NAK packet
2633 receives a crypto-NAK packet that
2638 a properly forged and appropriately delivered crypto-NAK packet
2718 .Fl -interface ,
2721 .Fl -novirtualips
2722 command-line options are specified in the configuration file,
2731 time, and TAI offset.
2733 .Li https://hpiers.obspm.fr/iers/bul/bulc/ntp/leap-seconds.list
2735 .Li ftp://hpiers.obspm.fr/iers/bul/bulc/ntp/leap-seconds.list .
2750 .Xr update-leap 1update_leapmdoc
2758 .Cm --enable-leap-smear
2765 .Sy DO NOT USE THIS OPTION ON PUBLIC-ACCESS SERVERS!
2781 .Ql - ,
2789 .Ql -
2833 .Bd -literal
2842 .Bd -literal
2870 .Bl -tag -width indent
2906 Initial memory allocation at the time the monitoringfacility is first enabled,
2919 (frequency file) will be written, with a default value of 1e-7 (0.1 PPM).
2931 or the JJY driver (type 40, mode 100 - 180).
2934 time service.
2935 For the JJY driver (type 40 mode 100 - 180), the argument is
2958 The next two numbers must be between 0 and one-half of the poll interval,
3002 .Bl -tag -width indent
3010 The default is 32 megabytes on non-Linux machines, and -1 under Linux.
3011 -1 means "do not lock the process into memory".
3039 .Cm config-from-file
3054 format directives to substitute the current date and time,
3056 .Cm saveconfig\ ntp-%Y%m%d-%H%M%S.conf .
3133 .Bl -tag -width indent
3145 parts-per-million.
3150 huff-n'-puff filter span, which determines the most recent interval
3168 Note: The kernel time discipline is
3178 Note: The kernel time discipline is
3216 interface used may vary from time to time with routing changes.
3222 mode these values are used in-turn in an expanding-ring search.
3235 an expanding-ring search.
3242 doc-section = {
3243 ds-type = 'FILES';
3244 ds-format = 'mdoc';
3245 ds-text = <<- _END_MDOC_FILES
3246 .Bl -tag -width /etc/ntp.drift -compact
3253 .It Pa ntpkey_ Ns Ar host
3256 Diffie-Hellman agreement parameters
3261 doc-section = {
3262 ds-type = 'SEE ALSO';
3263 ds-format = 'mdoc';
3264 ds-text = <<- _END_MDOC_SEE_ALSO
3277 .%T Network Time Protocol (Version 4)
3283 doc-section = {
3284 ds-type = 'BUGS';
3285 ds-format = 'mdoc';
3286 ds-text = <<- _END_MDOC_BUGS
3292 .Pa ntpkey_ Ns Ar host
3300 doc-section = {
3301 ds-type = 'NOTES';
3302 ds-format = 'mdoc';
3303 ds-text = <<- _END_MDOC_NOTES