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Diffstat (limited to 'html/sntp.html')
| -rw-r--r-- | html/sntp.html | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/html/sntp.html b/html/sntp.html index 0c270cb..84c6f29 100644 --- a/html/sntp.html +++ b/html/sntp.html @@ -3,6 +3,7 @@ <head> <meta http-equiv="content-type" content="text/html;charset=iso-8859-1"> <title>sntp - Simple Network Time Protocol (SNTP) Client</title> +<!-- Changed by: Harlan &, 07-Dec-2014 --> <link href="scripts/style.css" type="text/css" rel="stylesheet"> </head> <body> @@ -10,7 +11,7 @@ <img src="pic/dogsnake.gif" alt="gif" align="left"><a href="http://www.eecis.udel.edu/~mills/pictures.html">from <i>Alice's Adventures in Wonderland</i>, Lewis Carroll</a> <p>S is for snakeoil.</p> <p>Last update: - <!-- #BeginDate format:En2m -->3-Oct-2011 21:51<!-- #EndDate --> + <!-- #BeginDate format:En2m -->1-Apr-2015 11:05<!-- #EndDate --> UTC</p> <br clear="left"> <hr> @@ -19,8 +20,8 @@ <h4>Description</h4> <p>This program is a Simple Network Time Protocol (SNTP) client that can be used to query a Network Time Protocol (NTP) server and display the time offset of the system clock relative to the server clock. Run as root it can correct the system clock to this offset as well. It can be run as an interactive command or from a script by a <tt>cron</tt> job. The program implements the SNTP client protocol defined in RFC 5905, including the full on-wire protocol but does not provide the sanity checks, access controls, security functions and mitigation algorithms as in the full NTP version 4 specification, also defined in RFC 5905.</p> <p>By default, <tt>sntp</tt> writes the local date and time (i.e., not UTC) to the standard output in the format</p> -<p><tt>2011-08-04 00:40:36.642222 (+0000) +0.006611 +/- 0.041061 psp-os1 149.20.68.26</tt></p> -<p>where the <tt>+0.006611 +/- 0.041061</tt> indicates the time offset and error bound of the system clock relative to the server clock, in seconds.</p> +<p><tt>2011-08-04 00:40:36.642222 (+0000) +0.006611 +/- 0.041061 psp-os1 149.20.68.26 s3 no-leap</tt></p> +<p>where the <tt>+0.006611 +/- 0.041061</tt> indicates the time offset and error bound of the system clock relative to the server clock, in seconds. The hostname and/or the IP is displayed, as is the stratum of the server. Finally, the leap indicator status is displayed.</p> <p>If -b <i>bcaddress</i> is not specified, the program sends a single message to each address and waits up to <i>uctimeout</i> (default 5) seconds for a unicast server response. Otherwise, it sends no message and waits up to <i>bctimeout</i> (default 68) seconds for a broadcast NTP message.</p> <h4>Options</h4> <p><tt>sntp</tt> recognizes the following options:</p> @@ -46,7 +47,7 @@ <dt><tt>-g <i>delay</i>, --gap <i>delay</i></tt></dt> <dd>Specify the <i>delay</i> in milliseconds between outgoing queries, defaulting to 50. <tt>sntp</tt> sends queries to all provided hostnames/addresses in short succession, and by default terminates once the first valid response is received. With multiple time sources provided, all but one will not be used. To limit the number of queries whose responses will not be used, each query is separated from the preceding one by <i>delay</i> milliseconds, to allow time for responses to earlier queries to be received. A larger <i>delay</i> reduces the query load on the time sources, increasing the time to receive a valid response if the first source attempted is slow or unreachable.</dd> <dt><tt>-K <i>kodfile</i>, --kod <i>kodfile</i></tt></dt> - <dd>Specifies the filename <i>kodfile</i> to be used for the persistent history of KoD (Kiss Of Death, or rate-limiting) responses received from servers. The default is <tt>/var/db/ntp-kod</tt>. Note that the short option is <tt>-K</tt>, an uppercase letter K.</dd> + <dd>Specifies the filename <i>kodfile</i> to be used for the persistent history of KoD (Kiss Of Death, or rate-limiting) responses received from servers. The default is <tt>/var/db/ntp-kod</tt>. If the file does not exist, a warning message will be displayed. The file will not be created. Note that the short option is <tt>-K</tt>, an uppercase letter K.</dd> <dt><tt>-k <i>keyfile</i>, --keyfile <i>keyfile</i></tt></dt> <dd>Specifies the filename <i>keyfile</i> used with the <tt>-a</tt>/<tt>--authentication</tt> option. The format of the file is described on the <a href="keygen.html"><tt>ntp-keygen</tt> page</a>.</dd> <dt><tt>-l <i>logfile</i>, --filelog <i>logfile</i></tt></dt> |