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openntpd-openssl
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OpenNTPD daemon with OpenSSL implementation & flexible configurability
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openntpd-openssl/patches/8-patch_update-conf.patch

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From: Pekka Helenius <fincer89@hotmail.com>
Date: Tue, 04 Aug 2020 01:52:17 +0300
Subject: Update default configuration file
--- a/ntpd.conf 2020-07-31 23:00:50.000000000 +0300
+++ b/ntpd.conf 2020-08-03 23:19:18.951338773 +0300
@@ -1,11 +1,321 @@
-# $OpenBSD: ntpd.conf,v 1.16 2019/11/06 19:04:12 deraadt Exp $
-#
# See ntpd.conf(5) and /etc/examples/ntpd.conf
+# BASIC KEYWORDS
+
+# listen on 127.0.0.1 port 123
+
servers pool.ntp.org
-server time.cloudflare.com
-sensor *
+server time.cloudflare.com
+sensor *
-constraint from "9.9.9.9" # quad9 v4 without DNS
-constraint from "2620:fe::fe" # quad9 v6 without DNS
+constraint from "9.9.9.9" # quad9 v4 without DNS
+constraint from "2620:fe::fe" # quad9 v6 without DNS
constraints from "www.google.com" # intentionally not 8.8.8.8
+
+constraints from "https://www.duckduckgo.com" port 443
+
+# ADVANCED KEYWORDS
+
+# During OpenNTPD initialization, all NTP peers get
+# automatic time offset value, if pre-conditions for
+# automatic interval adjustment are being met.
+# The conditions are as follows: OpenNTPD configuration
+# has constraints, trusted NTP peers or trusted sensors
+# and current internally defined process security level
+# is 0. In this case, initial time offset value is set
+# to 1 which, in return, triggers automatic offset calculation.
+#
+# In the automatic offset calculation, a trusted NTP
+# peer offset values are being counted for each peer.
+# For each peer an independent pool size is determined
+# by auto_replies value, ignoring the last value.
+# For instance, with auto_replies value 4, first
+# 3 NTP peer offset values are considered for a single
+# NTP peer, and a median offset value of these collected
+# 3 offset values is calculated and used for time adjustment.
+#
+# auto_replies 4
+
+# In OpenNTPD initial automatic time offset calculation,
+# three conditions are being considered for NTP peers:
+# is a NTP peer trusted and current overall constraint-based
+# median offset not 0, and whether an initial NTP peer
+# time offset exceeds value of auto_threshold . If these
+# conditions are met, then auto_threshold value may be
+# considered. If NTP peer current time offset value is
+# less than auto_threshold , then the system time offset
+# value is considered to be already OK, and OpenNTPD stops
+# calculating automatic offset value from further NTP peer
+# queries. In this case, median offset value is not calculated.
+#
+# auto_threshold 60
+
+# In automatic NTP peer offset calculation mode (during OpenNTPD
+# initialization), if NTP peer IP address is still unresolved
+# (unknown), the next query is attempted in interval_auto_dnsfail
+# seconds. Applies to unresolved constraint IP addresses, as well.
+#
+# interval_auto_dnsfail 1
+
+# Maximum number of attempts to resolve a constraint IP address(es)
+# with a DNS query before falling back from constraint_retry_interval
+# to interval_auto_dnsfail in constraint initialization.
+#
+# tries_auto_dnsfail 4
+
+# PEM-formatted certificate bundle file
+# for constraint HTTPS connections.
+#
+# constraint_ca /etc/ssl/cert.pem
+
+# Whether to validate constraint HTTPS
+# server certificate.
+#
+# constraint_ca_validation true
+
+# Use either LibreSSL (libressl) or OpenSSL (openssl)
+# for constraint HTTPS server connections. To
+# support chosen TLS engine, ntpd(8) must be
+# compiled and run with proper libraries installed
+# on the system. Only LibreSSL and OpenSSL are
+# supported.
+#
+# constraint_engine libressl
+
+# Accepted number of errors during constraint
+# process. If error count exceeds this value
+# multiplied by calculated peer count,
+# constraint connection will be reseted and
+# a new constraint is retrieved.
+#
+# constraint_error_margin 4
+
+# Acceptable time difference between retrieved
+# HTTP header time value and calculated time
+# value in seconds. HTTP header time values
+# exceeding this margin value will be ignored.
+#
+# constraint_margin 120
+
+# Maximum allowed HTTP header length of constraint
+# HTTPS server reply to be fetched in bytes. If
+# the value is exceeded during processing, nothing
+# is returned and constraint check fails.
+#
+# constraint_max_headerlength 8192
+
+# Constraint HTTPS servers scan interval in seconds.
+#
+# constraint_scan_interval 900
+
+# Maximum connection establishment time to a
+# constraint HTTPS server in seconds.
+#
+# constraint_scan_timeout 10
+
+# ntpd(8) socket file path.
+#
+# ctlsocket /var/run/ntpd.sock
+
+# ntpd(8) drift file path.
+#
+# driftfile /var/db/ntpd.drift
+
+# Whether to reset frequency filters after
+# frequency adjustment.
+#
+# filter_adjfreq true
+
+# Number of frequency samples for estimating
+# permanent drift value.
+#
+# frequency_samples 8
+
+# Initial trust level for a new, timed out or
+# erroneous remote NTP server. Every received
+# and non-discarded reply increases trust for
+# the server. The trust level is used for
+# setting used interval_query_* value for the
+# server and keeping track of valid remote NTP
+# servers.
+#
+# A server having this trust level uses remote
+# NTP query interval value interval_query_aggressive .
+#
+# trustlevel_pathetic 2
+
+# If a replying remote NTP server has trust level
+# one number less than this value, the server gets
+# trusted. In this case, the server can achieve
+# maximum trust level trustlevel_max . This trust
+# level is preceded by trust level trustlevel_pathetic
+# and followed by trust level trustlevel_aggressive .
+#
+# A NTP server having trust level value trustlevel_badpeer ,
+# or value greater than trustlevel_pathetic but less than
+# trustlevel_aggressive uses remote NTP query interval
+# value interval_query_aggressive .
+#
+# In a case of NTP server reply time out, if the server
+# has at least trust level value trustlevel_badpeer
+# and the trust level value divided by 2 is less than
+# the trustlevel_badpeer value, the server will be
+# invalidated and falls back to initial trust level
+# trustlevel_pathetic .
+#
+# trustlevel_badpeer 6
+
+# Aggressive trust level is preceded by trust level
+# trustlevel_badpeer and followed by trust level
+# trustlevel_max . If a remote NTP server current trust
+# level is at least value of trustlevel_pathetic but
+# less than this value, used remote NTP query interval
+# is determined by value interval_query_aggressive .
+# A server with exact trust level trustlevel_aggressive
+# uses query interval interval_query_normal
+# (see trustlevel_max below).
+#
+# trustlevel_aggressive 8
+
+# Maximum trust level follows trust level trustlevel_aggressive .
+# This is the maximum trust level which a remote NTP
+# server can achieve. A server having at least trust
+# level trustlevel_aggressive uses remote NTP query
+# interval value interval_query_normal .
+#
+# trustlevel_max 10
+
+# Remote NTP server query interval in seconds for servers with
+# a trust level value greater than trustlevel_pathetic but less
+# than trustlevel_aggressive in a case where a NTP peer does not
+# still have large enough pool of already queried offset time values
+# for its offset time median calculation (checked against value
+# auto replies ) or is not trusted , interval value
+# interval_query_ultra_violence may be triggered.
+# Applies only to NTP offset calculation automatic mode.
+#
+# In most cases, interval_query_aggressive is used instead.
+# Dynamic offset scale value factors qscale_off_min and qscale_off_max
+# are ignored.
+#
+# interval_query_ultra_violence 1
+
+# Remote NTP server query interval in seconds for
+# servers with a trust level value less than trustlevel_pathetic .
+# Practically never used.
+#
+# This value is not the final query interval value but
+# used in a combination with a dynamic offset scale value,
+# determined by qscale_off_min and qscale_off_max .
+#
+# trustlevel_query_pathetic 60
+
+# Remote NTP server query interval in seconds for servers
+# with a trust level value greater than trustlevel_pathetic
+# but less than trustlevel_aggressive . Since all servers
+# start with a value trustlevel_pathetic , it means that
+# this is the initial value used for all new, timed out
+# or erroneous NTP servers.
+#
+# This value is not the final query interval value but
+# used in a combination with a dynamic offset scale value,
+# determined by qscale_off_min and qscale_off_max .
+#
+# trustlevel_query_aggressive 5
+
+# Remote NTP server query interval in seconds for servers
+# with a trust level value between trustlevel_aggressive
+# and trustlevel_max .
+#
+# This value is not the final query interval value but
+# used in a combination with a dynamic offset scale value,
+# determined by qscale_off_min and qscale_off_max .
+#
+# trustlevel_query_normal 30
+
+# Retry time in seconds after failed connection attempt
+# to a remote NTP server.
+#
+# interval_query_timeout 300
+
+# Negligible frequency rate to not log in PPM.
+#
+# log_negligible_adjfreq 0.05
+
+# Negligible drift time to not log in milliseconds.
+#
+# log_negligible_adjtime 32
+
+# Maximum allowed frequency correction per iteration.
+#
+# max_frequency_adjust 0.0128
+
+# Maximum number of errors tolerated before reconnecting
+# to a remote NTP server.
+#
+# max_send_errors 3
+
+# Maximum number of remote NTP server IP addresses
+# fetched per DNS query.
+#
+# max_servers_dns 8
+
+# ntpd(8) process user name. Group name and working
+# directory are internally fetched by getpwnam(3) .
+#
+# ntpd_user ntp
+
+# Minimum scale value used for dynamically adjusting
+# NTP server query interval time. If median NTP server
+# & sensor offset value is lower than this value, then
+# this value is used for scale calculation as minimum value.
+# Otherwise, the offset value is used as minimum value.
+# The offset value is a combined median value, based on
+# all NTP server & sensor offset values.
+#
+# The determined frequency scale is
+# qscale_off_max / { qscale_off_min OR median offset } .
+#
+# In the end, the calculated scale value is multiplied
+# one of interval_query_* values (pathetic, aggressive, normal)
+# on a client side, and ultimately used for dynamic
+# adjustment of client-side NTP server query interval time
+# for ntpd(8) process.
+#
+# qscale_off_min 0.001
+
+# Maximum scale value used for dynamically adjusting
+# NTP server query interval time. This value is used
+# either with a median NTP server & sensor offset value,
+# described in qscale_off_min section, or directly with
+# the value of qscale_off_min . The more detailed description
+# about further use of this value is above and
+# in interval_query_* sections.
+#
+# qscale_off_max 0.050
+
+# Maximum time reserved for a single NTP server query
+# in seconds.
+#
+# querytime_max 15
+
+# Sensor data maximum valid age in seconds.
+#
+# sensor_data_maxage 900
+
+# Sensor default reference ID string.
+#
+# sensor_default_refid "HARD"
+
+# Sensor query interval in seconds.
+#
+# sensor_query_interval 15
+
+# Scan interval for new sensors in seconds.
+#
+# sensor_scan_interval 60
+
+# Maximum time to wait for a constraint to reply
+# during OpenNTPD initial automatic mode.
+#
+# settime_timeout 100