diff options
| -rw-r--r-- | roles/common/tasks/ntp.yml | 6 | ||||
| -rw-r--r-- | roles/common/templates/etc/iptables/services.j2 | 4 | ||||
| -rw-r--r-- | roles/common/templates/etc/ntp.conf.j2 | 14 |
3 files changed, 14 insertions, 10 deletions
diff --git a/roles/common/tasks/ntp.yml b/roles/common/tasks/ntp.yml index 94d7696..f9a01c8 100644 --- a/roles/common/tasks/ntp.yml +++ b/roles/common/tasks/ntp.yml @@ -6,12 +6,10 @@ dest=/etc/ntp.conf owner=root group=root mode=0644 - register: r notify: - Restart ntp +- meta: flush_handlers + - name: Start ntp service: name=ntp state=started - when: not r.changed - -- meta: flush_handlers diff --git a/roles/common/templates/etc/iptables/services.j2 b/roles/common/templates/etc/iptables/services.j2 index 3a470fa..db7edf1 100644 --- a/roles/common/templates/etc/iptables/services.j2 +++ b/roles/common/templates/etc/iptables/services.j2 @@ -7,8 +7,10 @@ out tcp 80,443 # HTTP/HTTPS out udp 53 # DNS out udp 67 # DHCP - {% if 'NTP-master' in group_names %} +in udp 123 # NTP +out udp 123 # NTP +{% else %} out udp 123 123 # NTP {% endif %} diff --git a/roles/common/templates/etc/ntp.conf.j2 b/roles/common/templates/etc/ntp.conf.j2 index 96cc16c..d46ba18 100644 --- a/roles/common/templates/etc/ntp.conf.j2 +++ b/roles/common/templates/etc/ntp.conf.j2 @@ -22,9 +22,13 @@ server ntp2.gbg.netnod.se iburst server ntp1.sth.netnod.se iburst server ntp2.sth.netnod.se iburst {% else %} -# Sychronize to our (stratum 2) NTP server through IPSec, to ensure our -# network has a consistent time. -server ntp.fripost.org iburst +# Sychronize to our (stratum 2) NTP server, to ensure our network has a +# consistent time. +# TODO: use to pubkey authentication to unsure an attacker doesn't +# impersonate our NTP server and gives us incorrect time. +server ntp.fripost.org iburst +server 0.se.pool.ntp.org iburst +server 1.se.pool.ntp.org iburst {% endif %} @@ -37,8 +41,8 @@ server ntp.fripost.org iburst # up blocking replies from your own upstream servers. # By default, exchange time with everybody, but don't allow configuration. -restrict -4 default kod notrap nomodify nopeer noquery -restrict -6 default kod notrap nomodify nopeer noquery +restrict -4 default limited kod nomodify notrap nopeer noquery +restrict -6 default limited kod nomodify notrap nopeer noquery # Local users may interrogate the ntp server more closely. restrict 127.0.0.1 |