| Commit message (Collapse) | Author | Age | Files |
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Most notably pipelining=True and sysctl_set=yes.
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To avoid low-entropy conditions, see
http://www.issihosts.com/haveged/
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By using double quoted scalars, cf.
https://groups.google.com/forum/#!topic/ansible-project/ZaB6o-eqDzw
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We use a "master" NTP server, which synchronizes against stratum 1
servers (hence is a stratum 2 itself); all other clients synchronize to
this master server through IPSec.
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And use main.cf's 'master_service_disable' setting to deactivate each
service that's useless for a given instance. (Hence solve conflict when
trying to listen twice on the same port, for instance.)
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It's unfortunate that samhain cannot use the sendmail binary, and wants
to use a inet socket instead. We use a custom port to avoid
conflicts with the usual SMTP port the MX:es need to listen on.
See also: /usr/share/doc/samhain/TODO.Debian
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For non-indexed attributes, do not ask the LDAP server to modify values
in the symmetric difference of A (the entry found in the directory) and
B (the target). That is, we replace A by B only when they are disjoint;
otherwise we remove values in A-B and add those in B-A.
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Since indices are specified in the database LDIF.
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We use a dedicated instance for each role: MDA, MTA out, MX, etc.
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We use ESP only, so other protocols shouldn't be ACCEPTed.
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This is pointless since the service will be restarted anyway.
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In particular, run 'apt-get update' right after configured APT, and
restart daemon right after configured them.
The advantage being that if ansible crashes in some "task", the earlier
would already be restarted if neeeded. (This may not happen in the next
run since the configuration should already be up to date.)
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Packets originating from our (non-routable) $ipsec are marked; there is
no xfrm lookup (i.e., no matching IPSec association), the packet will
retain its mark and be null routed later on, thanks to
ip rule add fwmark "$secmark" table 666 priority 666
ip route add blackhole default table 666
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At the each IPSec end-point the traffic is DNAT'ed to / MASQUERADE'd
from our dedicated IP after ESP decapsulation. Also, some IP tables
ensure that alien (not coming from / going to the tunnel end-point) is
dropped.
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These rules are automatically included by third-party servers such as
strongSwan or fail2ban.
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update-firewall.sh -c does not update the firewall, but returns a
non-zero value iff. running it without the switch would modify it.
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To run the playbook:
cd ./ansible
ansible-playbook -i vms site.yml
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