Date: Sun, 24 Jun 2018 03:29:00 +0000 (UTC) From: Ian Lepore <ian@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r335595 - head/etc Message-ID: <201806240329.w5O3T0kq033162@repo.freebsd.org>
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Author: ian Date: Sun Jun 24 03:29:00 2018 New Revision: 335595 URL: https://svnweb.freebsd.org/changeset/base/335595 Log: Modernize usage of "restrict" keyword in ntp.conf It is no longer necessary to specify a -4/-6 flag on any ntp.conf keyword. The address type is inferred from the address itself as necessary. "restrict default" statements always apply to both address families regardless of any -4/-6 flag that may be present. So this change just tidies up our default config by removing the redundant restrict -6 statement and comment, and by removing the -6 flag from the restrict keyword that allows access from localhost. This change was inspired by the patches provided in PRs 201803 and 210245, and included some contrib/ntp code inspection to verify that the -4/-6 keywords are basically no-ops in all contexts now. PR: 201803 210245 Differential Revision: https://reviews.freebsd.org/D15974 Modified: head/etc/ntp.conf Modified: head/etc/ntp.conf ============================================================================== --- head/etc/ntp.conf Sat Jun 23 23:44:36 2018 (r335594) +++ head/etc/ntp.conf Sun Jun 24 03:29:00 2018 (r335595) @@ -62,15 +62,13 @@ pool 0.freebsd.pool.ntp.org iburst # See http://support.ntp.org/bin/view/Support/AccessRestrictions # for more information. # -restrict default limited kod nomodify notrap noquery nopeer -restrict -6 default limited kod nomodify notrap noquery nopeer -restrict source limited kod nomodify notrap noquery +restrict default limited kod nomodify notrap noquery nopeer +restrict source limited kod nomodify notrap noquery # # Alternatively, the following rules would block all unauthorized access. # #restrict default ignore -#restrict -6 default ignore # # In this case, all remote NTP time servers also need to be explicitly # allowed or they would not be able to exchange time information with @@ -85,7 +83,7 @@ restrict source limited kod nomodify notrap noquer # # The following settings allow unrestricted access from the localhost restrict 127.0.0.1 -restrict -6 ::1 +restrict ::1 # # If a server loses sync with all upstream servers, NTP clients
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