From 17d7427e0bc5e61ee10e28cbc5cba5b8a7566d58 Mon Sep 17 00:00:00 2001
From: Guilhem Moulin <guilhem@fripost.org>
Date: Sun, 5 Jun 2016 17:30:00 +0200
Subject: Use stunnel to secure the connection from the webmail to
 ldap.fripost.org.
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

We should use IPSec instead, but doing so would force us to weaken
slapd.conf's ‘security’ setting.
---
 roles/webmail/files/etc/stunnel/ldap.conf | 57 +++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 roles/webmail/files/etc/stunnel/ldap.conf

(limited to 'roles/webmail/files/etc')

diff --git a/roles/webmail/files/etc/stunnel/ldap.conf b/roles/webmail/files/etc/stunnel/ldap.conf
new file mode 100644
index 0000000..1149bce
--- /dev/null
+++ b/roles/webmail/files/etc/stunnel/ldap.conf
@@ -0,0 +1,57 @@
+; **************************************************************************
+; * Global options                                                         *
+; **************************************************************************
+
+; setuid()/setgid() to the specified user/group in daemon mode
+setuid = stunnel4
+setgid = stunnel4
+
+; PID is created inside the chroot jail
+pid =
+foreground = yes
+
+; Only log messages at severity warning (4) and higher
+debug = 4
+
+; **************************************************************************
+; * Service defaults may also be specified in individual service sections  *
+; **************************************************************************
+
+; Certificate/key is needed in server mode and optional in client mode
+;cert = /etc/stunnel/mail.pem
+;key = /etc/stunnel/mail.pem
+client = yes
+socket = a:SO_BINDTODEVICE=lo
+
+; Some performance tunings
+socket = l:TCP_NODELAY=1
+socket = r:TCP_NODELAY=1
+
+; Prevent MITM attacks
+verify = 4
+
+; Disable support for insecure protocols
+options = NO_SSLv2
+options = NO_SSLv3
+options = NO_TLSv1
+options = NO_TLSv1.1
+
+options = NO_COMPRESSION
+
+; These options provide additional security at some performance degradation
+options = SINGLE_ECDH_USE
+options = SINGLE_DH_USE
+
+; Select permitted SSL ciphers
+ciphers = EECDH+AESGCM:!MEDIUM:!LOW:!EXP:!aNULL:!eNULL
+
+; **************************************************************************
+; * Service definitions (remove all services for inetd mode)               *
+; **************************************************************************
+
+[ldaps]
+accept  = localhost:389
+connect = ldap.fripost.org:636
+CAfile  = /etc/stunnel/certs/ldap.pem
+
+; vim:ft=dosini
-- 
cgit v1.2.3