Lines Matching +full:digital +full:- +full:input +full:- +full:threshold +full:- +full:mode +full:- +full:fixed
6 .\" It has been AutoGen-ed May 25, 2024 at 12:03:50 AM by AutoGen 5.18.16
8 .\" and the template file agmdoc-cmd.tpl
14 .Op Fl \-option\-name
15 .Op Fl \-option\-name Ar value
46 host addresses written in numeric, dotted\-quad form,
62 .Bl -bullet -offset indent
111 If the Basic Socket Interface Extensions for IPv6 (RFC\-2553)
139 .Bl -tag -width indent
188 be used and the mode in which to operate.
192 either a DNS name or an IP address in dotted\-quad notation.
199 .Bl -tag -width indent
202 client mode association with a number of remote servers.
203 In this mode the local clock can synchronized to the
208 client mode association with the specified remote server or local
210 In this mode the local clock can synchronized to the
219 persistent symmetric\-active mode association with the specified
221 In this mode the local clock can be synchronized to
231 command mobilizes a persistent broadcast mode association.
238 In broadcast mode the local server sends periodic broadcast
258 manycast client mode association for the multicast address
273 is to operate in client mode with the remote servers that are
290 .Bl -tag -width indent
360 It specifies the time\-to\-live
373 Versions 1\-4 are the choices, with version 4 the
380 modes only, this flag enables interleave mode.
389 .Bl -tag -width indent
396 server, then enters the broadcast client mode, in which it
399 to avoid accidental or malicious disruption in this mode, both the
400 server and client should operate using symmetric\-key or public\-key
412 accidental or malicious disruption in this mode, both the server
413 and client should operate using symmetric\-key or public\-key
422 exchange with the server, then enters the broadcast client mode, in
425 in order to avoid accidental or malicious disruption in this mode,
426 both the server and client should operate using symmetric\-key or
427 public\-key authentication as described in
449 specification RFC\-1305 defines a scheme which provides
453 operating in Cipher Block Chaining (CBC) mode, commonly called
454 DES\-CBC.
456 5 (MD5) algorithm using a private key, commonly called keyed\-MD5.
457 Either algorithm computes a message digest, or one\-way hash, which
559 is manycast mode, in which clients periodically troll
564 cryptographic authentication can be used in this mode.
566 of manycast mode is that potential servers need not be
578 .Ss Symmetric\-Key Cryptography
579 The original RFC\-1305 specification allows any one of possibly
580 65,535 keys, each distinguished by a 32\-bit key identifier, to
628 described in RFC\-1305 and in addition the Autokey protocol,
632 and verifies the source with digital signatures and any of several
656 All modes use in addition a variant of the S\-KEY scheme,
657 in which a pseudo\-random key list is generated and used
667 .Xr ntp\-keygen 1ntpkeygenmdoc
683 those based on RSA and DSA digital signatures.
797 Bob sends Cathy a thing called a crypto\-NAK, which tells her
821 .Xr ntp\-keygen 1ntpkeygenmdoc
854 .Bl -tag -width indent
869 protocol defined in RFC\-1305.
900 .Bl -tag -width indent
971 Specifies the interval between re\-randomization of certain
975 deflect brute\-force attacks on the algorithms of the scheme;
995 arguments are 32\-bit unsigned
1001 .Bl -tag -width indent
1071 .Bl -tag -width indent
1077 .Bl -tag -width indent
1084 .Bd -literal
1091 clock address in dotted\-quad notation.
1106 .Bd -literal
1113 address in dotted\-quad notation, The final message field includes the
1124 .Bd -literal
1131 show time offset (seconds), frequency offset (parts per million \-
1143 .Bd -literal
1144 48773 10847.650 127.127.4.1 9714 \-0.001605376 0.000000000 0.001424877 0.000958674
1150 show the peer address in dotted\-quad notation and status,
1157 Enables recording of raw\-timestamp statistics information.
1165 .Bd -literal
1173 in dotted\-quad notation.
1185 .Bd -literal
1194 .Bl -tag -width indent
1250 .Bl -tag -width indent
1263 .Bl -tag -width indent
1271 server, usually specified as a compile\-time constant.
1305 .Bl -tag -width indent
1337 is a 4\-digit year number (e.g., 1992).
1349 The term week is defined by computing day\-of\-year
1353 filename base: A dot, a 4\-digit year number, the letter
1355 and a 2\-digit week number.
1362 file name suffix consists of a dot, a 4\-digit year number, and
1363 a 2\-digit month.
1374 and an 8\-digit number.
1376 running at the start of the corresponding 24\-hour period.
1384 generation set by a fixed name.
1458 .Ss The Kiss\-of\-Death Packet
1466 for this purpose called the "kiss\-of\-death" (KoD) packet.
1468 to zero and the reference identifier field set to a four\-byte
1494 .Bl -tag -width indent
1512 and a kiss\-o'\-death packet returned if enabled.
1562 where a value of \-1 means "unlimited", the current default.
1577 restrict informational queries and attempts to do run\-time
1581 .Bl -tag -width indent
1589 If this flag is set when a rate violation occurs, a kiss\-o'\-death
1628 to become the default in ntp\-4.4.
1670 Decline to provide mode 6 control message trap service to matching
1716 Remove a previously\-set restriction. This is useful for
1743 with the anycast paradigm described in RFC\-1546,
1775 and minimum feasible time\-to\-live (TTL) hops, depending
1802 in burst mode in order to reliably set the host clock
1805 in a volley of eight client/server at 2\-s intervals
1814 in ordinary client/server mode.
1818 and the effects of implosion due to near\-simultaneous
1986 re\-associate accordingly.
2010 Each time a manycast client sends a client mode packet
2025 This is in general transparent in client/server mode.
2040 .Bl -tag -width indent
2055 broadcast mode, attempts to perform a replay attack are possible.
2060 .Bl -tag -width indent
2074 and is most useful in manycast mode.
2077 .Bl -tag -width indent
2127 In manycast mode these values are used in turn
2128 in an expanding\-ring search.
2134 satellite and modem reference clocks plus a special pseudo\-clock
2154 .Qq Pulse\-per\-second (PPS) Signal Interfacing
2204 number in the range 0\-3.
2223 .Cm mode
2264 device\-dependent time offsets and four flags that can be included
2281 involving both a reference clock and a pulse\-per\-second (PPS)
2290 .Bl -tag -width indent
2296 .Op Cm mode Ar int
2303 .Bl -tag -width indent
2316 .It Cm mode Ar int
2317 Specifies a mode number which is interpreted in a
2318 device\-specific fashion.
2348 .Op Cm mode Ar int
2365 .Bl -tag -width indent
2368 the driver, a fixed\-point decimal number in seconds.
2396 Specifies a fixed\-point decimal number in seconds, which is
2397 interpreted in a driver\-dependent way.
2416 .It Cm mode Ar int
2417 Specifies a mode number which is interpreted in a
2418 device\-specific fashion.
2447 .Bl -tag -width indent
2481 in parts\-per\-million (PPM).
2492 a 6\-bit code.
2520 .Bl -tag -width indent
2548 Enables processing of NTP mode 7 implementation\-specific requests
2559 using standard mode 6 requests.
2582 receives a crypto\-NAK packet that
2587 a properly forged and appropriately delivered crypto\-NAK packet
2630 receives a crypto\-NAK packet that
2635 a properly forged and appropriately delivered crypto\-NAK packet
2693 opens, and whether input is dropped without processing.
2715 .Fl \-interface ,
2718 .Fl \-novirtualips
2719 command\-line options are specified in the configuration file,
2730 .Li https://hpiers.obspm.fr/iers/bul/bulc/ntp/leap\-seconds.list
2732 .Li ftp://hpiers.obspm.fr/iers/bul/bulc/ntp/leap\-seconds.list .
2747 .Xr update\-leap 1update_leapmdoc
2755 .Cm \-\-enable\-leap\-smear
2762 .Sy DO NOT USE THIS OPTION ON PUBLIC\-ACCESS SERVERS!
2778 .Ql \- ,
2786 .Ql \-
2830 .Bd -literal
2839 .Bd -literal
2867 .Bl -tag -width indent
2911 .It Ic nonvolatile Ar threshold
2913 .Ar threshold
2916 (frequency file) will be written, with a default value of 1e\-7 (0.1 PPM).
2919 exceeds the threshold, the file is written and the
2920 .Cm threshold
2921 becomes the new threshold value.
2922 If the threshold is not exceeeded, it is reduced by half.
2928 or the JJY driver (type 40, mode 100 \- 180).
2932 For the JJY driver (type 40 mode 100 \- 180), the argument is
2955 The next two numbers must be between 0 and one\-half of the poll interval,
2999 .Bl -tag -width indent
3007 The default is 32 megabytes on non\-Linux machines, and \-1 under Linux.
3008 -1 means "do not lock the process into memory".
3036 .Cm config\-from\-file
3053 .Cm saveconfig\ ntp\-%Y%m%d\-%H%M%S.conf .
3130 .Bl -tag -width indent
3142 parts\-per\-million.
3147 huff\-n'\-puff filter span, which determines the most recent interval
3155 The argument is the panic threshold, normally 1000 s.
3160 The argument is the step threshold, which by default is 0.128 s.
3166 disabled if the step threshold is set to zero or greater than the
3169 The argument is the step threshold for the backward direction,
3177 each direction of step threshold are either
3219 mode these values are used in\-turn in an expanding\-ring search.
3231 In manycast mode these values are used in turn in
3232 an expanding\-ring search.
3237 .Bl -tag
3238 .It Fl \-help
3240 .It Fl \-more\-help
3242 .It Fl \-version Op Brq Ar v|c|n
3243 Output version of program and exit. The default mode is `v', a simple
3244 version. The `c' mode will print copyright information and `n' will
3251 \fBNTP_CONF_<option\-name>\fP or \fBNTP_CONF\fP
3257 .Bl -tag -width /etc/ntp.drift -compact
3267 Diffie\-Hellman agreement parameters
3271 .Bl -tag
3278 it to autogen\-users@lists.sourceforge.net. Thank you.
3299 Copyright (C) 1992\-2024 The University of Delaware and Network Time Foundation all rights reserved.
3308 files are really digital
3317 This manual page was \fIAutoGen\fP\-erated from the \fBntp.conf\fP