[pkg-ntp-maintainers] Bug#678955: /etc/ntp.conf: Add discard and limited commands to default configuration
Roger Lynn
roger at rilynn.me.uk
Tue Jun 26 16:32:42 UTC 2012
Package: ntp
Version: 1:4.2.6.p2+dfsg-1+b1
Severity: normal
File: /etc/ntp.conf
Hi,
In addition to adding the "limited" option to the restrict command, I would
suggest adding a discard command to override the default minimum request
period of 2 seconds, which will block ntpdate clients older than 4.2.7p22.
I use:
discard average 6 minimum 1
restrict default kod notrap nomodify nopeer noquery limited
A discard average of 6 (64 seconds) is possibly too aggressive for a default
setting and this could be left at its default of 3 (8 seconds).
This is mentioned in http://lists.ntp.org/pipermail/pool/2012-June/005885.html
Thanks,
Roger
-- System Information:
Debian Release: 6.0.5
APT prefers stable-updates
APT policy: (500, 'stable-updates'), (500, 'proposed-updates'), (500, 'stable'), (150, 'testing')
Architecture: i386 (i686)
Kernel: Linux 2.6.32-5-686 (SMP w/1 CPU core)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages ntp depends on:
ii adduser 3.112+nmu2 add and remove users and groups
ii dpkg 1.15.8.12 Debian package management system
ii libc6 2.11.3-4 Embedded GNU C Library: Shared lib
ii libcap2 1:2.19-3 support for getting/setting POSIX.
ii libedit2 2.11-20080614-2 BSD editline and history libraries
ii libopts25 1:5.10-1.1 automated option processing librar
ii libssl0.9.8 0.9.8o-4squeeze13 SSL shared libraries
ii lsb-base 3.2-23.2squeeze1 Linux Standard Base 3.2 init scrip
ii netbase 4.45 Basic TCP/IP networking system
Versions of packages ntp recommends:
ii perl 5.10.1-17squeeze3 Larry Wall's Practical Extraction
Versions of packages ntp suggests:
pn ntp-doc <none> (no description available)
-- Configuration Files:
/etc/ntp.conf changed [not included]
-- no debconf information
More information about the pkg-ntp-maintainers
mailing list