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Diffstat (limited to 'contrib/ntp/ntpd/ntp.conf.def')
| -rw-r--r-- | contrib/ntp/ntpd/ntp.conf.def | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/contrib/ntp/ntpd/ntp.conf.def b/contrib/ntp/ntpd/ntp.conf.def index a62e976..5ae8c38 100644 --- a/contrib/ntp/ntpd/ntp.conf.def +++ b/contrib/ntp/ntpd/ntp.conf.def @@ -1997,6 +1997,25 @@ At the same time, the manycast scheme starts all over from the beginning and the expanding ring shrinks to the minimum and increments from there while collecting all servers in scope. +.Ss Broadcast Options +.Bl -tag -width indent +.It Xo Ic tos +.Oo +.Cm bcpollbstep Ar gate +.Oc +.Xc +This command provides a way to delay, +by the specified number of broadcast poll intervals, +believing backward time steps from a broadcast server. +Broadcast time networks are expected to be trusted. +In the event a broadcast server's time is stepped backwards, +there is clear benefit to having the clients notice this change +as soon as possible. +Attacks such as replay attacks can happen, however, +and even though there are a number of protections built in to +broadcast mode, attempts to perform a replay attack are possible. +This value defaults to 0, but can be changed +to any number of poll intervals between 0 and 4. .Ss Manycast Options .Bl -tag -width indent .It Xo Ic tos |
