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Tuesday, December 23, 2014

Re: ntpd vulnerabilities

Joe Malcolm <jmalcolm@uraeus.com> writes:
> I'm no expert on ntp.conf, but this appears in my ntp.conf on one of
> my FreeBSD systems:
>
> restrict default kod nomodify notrap nopeer noquery
> restrict -6 default kod nomodify notrap nopeer noquery
>
> However, it also has these:
>
> restrict 127.0.0.1
> restrict -6 ::1
> restrict 127.127.1.0

These work on a "last match" basis. The latter three lines lift all
restrictions for localhost, so you can still "ntpq -pn" your own server,
but nobody else can.

DES
--
Dag-Erling Smørgrav - des@des.no
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