NTP users are strongly urged to take immediate action to ensure that their NTP daemons are not susceptible to being used in distributed denial-of-service (DDoS) attacks. Please also take this opportunity to defeat denial-of-service attacks by implementing Ingress and Egress filtering through BCP38.
ntp-4.2.8p15
was released on 23 June 2020. It addresses 1 medium-severity security issue in ntpd, and provides 13 non-security bugfixes over 4.2.8p13.
Are you using Autokey in production? If so, please contact Harlan - he's got some questions for you.
Parsing ntp.conf
- the config file for ntpd
Needed Tools
We process
ntpd/ntp_parser.y
with
bison
because we get much better error messages that way, and we also get a useful table of token symbolic names.
We used to allow building with
yacc
, but we stopped when we discovered we needed the token symbolic name tables.
What files are involved
- ntpd/ntp_parser.y
- ntpd/keyword-gen.c (see comments at top)
- ntpd/ntp_keyword.h
- ntpd/keyword-get-utd
- ntpd/ntp_config.c
Indented files are derived from the file above.
--
HarlanStenn - 2011-03-06