diff options
Diffstat (limited to 'usr.sbin/xntpd/doc/xntpdc.8')
| -rw-r--r-- | usr.sbin/xntpd/doc/xntpdc.8 | 38 |
1 files changed, 33 insertions, 5 deletions
diff --git a/usr.sbin/xntpd/doc/xntpdc.8 b/usr.sbin/xntpd/doc/xntpdc.8 index 20209b5..65450e3 100644 --- a/usr.sbin/xntpd/doc/xntpdc.8 +++ b/usr.sbin/xntpd/doc/xntpdc.8 @@ -20,13 +20,13 @@ ''' ''' Set up \*(-- to give an unbreakable dash; ''' string Tr holds user defined translation string. -''' Bell System Logo is used as a dummy character. +''' Greek uppercase omega is used as a dummy character. ''' -.tr \(bs-|\(bv\*(Tr +.tr \(*W-|\(bv\*(Tr .ie n \{\ -.ds -- \(bs- -.if (\n(.H=4u)&(1m=24u) .ds -- \(bs\h'-12u'\(bs\h'-12u'-\" diablo 10 pitch -.if (\n(.H=4u)&(1m=20u) .ds -- \(bs\h'-12u'\(bs\h'-8u'-\" diablo 12 pitch +.ds -- \(*W- +.if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch +.if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch .ds L" "" .ds R" "" .ds L' ' @@ -539,6 +539,17 @@ requests) from the source. Time service is not affected. Ignore all NTP mode 7 packets which attempt to modify the state of the server (i.e. run time reconfiguration). Queries which return information are permitted. +.Ip notrap 10 +Decline to provide mode 6 control message trap service to matching +hosts. The trap service is a subsystem of the mode 6 control message +protocol which is intended for use by remote event logging programs. +.Ip lowpriotrap 10 +Declare traps set by matching hosts to be low priority. The number +of traps a server can maintain is limited (the current limit is 3). +Traps are usually assigned on a first come, first served basis, with +later trap requestors being denied service. This flag modifies the +assignment algorithm by allowing low priority traps to be overridden +by later requests for normal priority traps. .Ip noserve 10 Ignore NTP packets whose mode is other than 7. In effect, time service is denied, though queries may still be permitted. @@ -549,6 +560,23 @@ useful as future synchronization partners. .Ip notrust 10 Treat these hosts normally in other respects, but never use them as synchronization sources. +.Ip limited 10 +These hosts are subject to limitation of number of clients from the +same net. Net in this context refers to the IP notion of net (class A, +class B, class C, etc.). Only the first \*(L"client_limit\*(R" hosts +that have shown up at the server and that have been active during the +last \*(L"client_limit_period\*(R" seconds are accepted. Requests from +other clients from the same net are rejected. Only time request +packets are taken into account. \*(L"Private\*(R", \*(L"control\*(R", +and \*(L"broadcast\*(R" packets are not subject to client limitation +and therefore are not contributing to client count. History of clients +is kept using the monitoring capability of +.IR xntpd. +Thus, monitoring is active as long as there is a restriction entry +with the \*(L"limited\*(R" flag. The default value for +\*(L"client_limit\*(R" is 3. The default value for +\*(L"client_limit_period\*(R" is 3600 seconds. Currently both +variables are not runtime configurable. .Ip ntpport 10 This is actually a match algorithm modifier, rather than a restriction flag. Its presence causes the restriction entry to be matched only if |
