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authorXin LI <delphij@FreeBSD.org>2016-12-22 16:19:05 +0000
committerXin LI <delphij@FreeBSD.org>2016-12-22 16:19:05 +0000
commitb06b7e647fe7b4eefbd29369cf0c24e1902bf72a (patch)
treed18590df36faea870c6827c64a75516475938e4d /usr.sbin/ntp/doc/ntp.conf.5
parent8c7ff71d356bdceffa6cd5b5017c65d0d63d9abc (diff)
downloadsrc-releng/9.3.tar.gz
src-releng/9.3.zip
Fix multiple vulnerabilities of ntp.releng/9.3
Approved by: so
Notes
Notes: svn path=/releng/9.3/; revision=310419
Diffstat (limited to 'usr.sbin/ntp/doc/ntp.conf.5')
-rw-r--r--usr.sbin/ntp/doc/ntp.conf.523
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 42af4a5eb713..8a79f672e751 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