Configure SyncRepl (OpenLDAP replication) and related ACLs.

The clients are identified using their certificate, and connect securely
to the SyncProv.

There are a few workarounds (XXX) in the ACLs due to Postfix not
supporting SASL binds in Wheezy.
Overview:
  - Authentication (XXX: strong authentication) is required prior to any DIT
    operation (see 'olcRequires').
  - We force a Security Strength Factor of 128 or above for all operations (see
    'olcSecurity'), meaning one must use either a local connection (eg,
    ldapi://, possible since we set the 'olcLocalSSF' to 128), or TLS with at
    least 128 bits of security.
  - XXX: Services may not simple bind other than locally on a ldapi:// socket.
    If no remote access is needed, they should use SASL/EXTERNAL on a ldapi://
    socket whenever possible (if the service itself supports SASL binds).
    If remote access is needed, they should use SASL/EXTERNAL on a ldaps://
    socket, and their identity should be derived from the CN of the client
    certificate only (hence services may not simple bind).
  - Admins have restrictions similar to that of the services.
  - User access is only restricted by our global 'olcSecurity' attribute.

1 files changed, 5 insertions, 0 deletions

diff --git a/roles/common/templates/etc/iptables/services.j2 b/roles/common/templates/etc/iptables/services.j2
index f382ea3..4e78d1e 100644
--- a/roles/common/templates/etc/iptables/services.j2
+++ b/roles/common/templates/etc/iptables/services.j2
@@ -13,6 +13,11 @@ out     udp     123      123                            # NTP
 {% endif %}
 
 in      tcp     {{ ansible_ssh_port|default('22') }}    # SSH
+{% if 'LDAP-provider' in group_names %}
+in      tcp     636                                     # LDAPS
+{% elif 'MX' in group_names or  'lists' in group_name %}
+out     tcp     636                                     # LDAPS
+{% endif %}
 {% if 'MX' in group_names %}
 in      tcp     25                                      # SMTP
 {% endif %}