diff options
Diffstat (limited to 'usr.sbin/ntp/doc/ntp.conf.5')
| -rw-r--r-- | usr.sbin/ntp/doc/ntp.conf.5 | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/usr.sbin/ntp/doc/ntp.conf.5 b/usr.sbin/ntp/doc/ntp.conf.5 index 42af4a5..8a79f67 100644 --- a/usr.sbin/ntp/doc/ntp.conf.5 +++ b/usr.sbin/ntp/doc/ntp.conf.5 @@ -1,11 +1,11 @@ -.Dd June 2 2016 +.Dd November 21 2016 .Dt NTP_CONF 5 File Formats .Os .\" EDIT THIS FILE WITH CAUTION (ntp.mdoc) .\" .\" $FreeBSD$ .\" -.\" It has been AutoGen-ed June 2, 2016 at 07:36:16 AM by AutoGen 5.18.5 +.\" It has been AutoGen-ed November 21, 2016 at 08:02:03 AM by AutoGen 5.18.5 .\" From the definitions ntp.conf.def .\" and the template file agmdoc-cmd.tpl .Sh NAME @@ -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 |
