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* Tunnel munin-update traffic through IPSec.Guilhem Moulin2016-05-223
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* Set up IPSec tunnels between each pair of hosts.Guilhem Moulin2016-05-223
| | | | | | | | | | | | | | | We use a dedicated, non-routable, IPv4 subnet for IPSec. Furthermore the subnet is nullrouted in the absence of xfrm lookup (i.e., when there is no matching IPSec Security Association) to avoid data leaks. Each host is associated with an IP in that subnet (thus only reachble within that subnet, either by the host itself or by its IPSec peers). The peers authenticate each other using RSA public key authentication. Kernel traps are used to ensure that connections are only established when traffic is detected between the peers; after 30m of inactivity (this value needs to be less than the rekeying period) the connection is brought down and a kernel trap is installed.
* Move /etc/ssl/private/dhparams.pem to /etc/ssl/dhparams.pem and make it public.Guilhem Moulin2016-05-181
| | | | | | | | | | Ideally we we should also increase the Diffie-Hellman group size from 2048-bit to 3072-bit, as per ENISA 2014 report. https://www.enisa.europa.eu/publications/algorithms-key-size-and-parameters-report-2014 But we postpone that for now until we are reasonably certain that older client won't be left out.
* Add an ansible module 'fetch_cmd' to fetch the output of a remote command ↵Guilhem Moulin2016-05-183
| | | | | | locally. And use this to fetch all X.509 leaf certificates.
* Use systemd unit files for stunnel4.Guilhem Moulin2016-05-125
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* sysctl: don't set IPv6 privacy extensions globaly.Guilhem Moulin2016-04-011
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* sysctl: set net.ipv6.conf.all.accept_ra = 0.Guilhem Moulin2016-03-301
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* Ansible: Using bare variables is deprecated, and will be removed in a future ↵Guilhem Moulin2016-03-022
| | | | release.
* Upgrade playbooks to Ansible 2.0.Guilhem Moulin2016-02-125
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* Only install letsencrypt-tiny to the relevant hosts.Guilhem Moulin2015-12-281
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* Use the Let's Encrypt CA for our public certs.Guilhem Moulin2015-12-201
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* Internal Postfix config: Generate RSA 4096 keys by default.Guilhem Moulin2015-10-281
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* Configure FreshClam.Guilhem Moulin2015-09-151
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* Change match to "^(Genuine)?Intel.*" for Intel processors.Guilhem Moulin2015-07-121
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* Configure munin nodes & master.Guilhem Moulin2015-06-102
| | | | | Interhost communications are protected by stunnel4. The graphs are only visible on the master itself, and content is generated by Fast CGI.
* Configure Bacula File Daemon / Storage Daemon / Director.Guilhem Moulin2015-06-072
| | | | | Using client-side data signing/encryption and wrapping inter-host communication into stunnel.
* Install CAcert.org root certificates.Guilhem Moulin2015-06-071
| | | | | XXX: this is a workaround the CAcert root CAs not being present in Jessie. In stretch, we would merely install the 'ca-cacert' package.
* logjam mitigation.Guilhem Moulin2015-06-071
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* wibbleGuilhem Moulin2015-06-071
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* Don't instal smartd on KVM guests.Guilhem Moulin2015-06-071
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* Upgrade the common package list.Guilhem Moulin2015-06-072
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* Add a 'root' alias to root@fripost.org.Guilhem Moulin2015-06-071
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* Upgrade rkhunter config to Jessie.Guilhem Moulin2015-06-071
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* Don't install intel-microcode on Xen guests.Guilhem Moulin2015-06-071
| | | | It should be installed on the dom0 instead.
* Don't install smartd on Xen guests.Guilhem Moulin2015-06-072
| | | | S.M.A.R.T makes little sense for virtual HDDs.
* Install auditd.Guilhem Moulin2015-06-073
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* wibbleGuilhem Moulin2015-06-071
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* Fix NTP configuration.Guilhem Moulin2015-06-071
| | | | We've yet to get authenticated time, though.
* Ensure have a TLS policy for each of our host we want to relay to.Guilhem Moulin2015-06-071
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* Postfix needs to be restarted after rekeying.Guilhem Moulin2015-06-071
| | | | (It opens the key as root, but then drops the permissions.)
* Add a tag 'tls_policy' to facilitate rekeying.Guilhem Moulin2015-06-071
| | | | | First generate all certs (-t genkey), then build the TLS policy maps ( -t tls_policy).
* Add ability to add custom OrganizationalUnits in genkeypair.Guilhem Moulin2015-06-071
| | | | Also, it's now possible to reuse an existing private key (with -f).
* Don't install daemontools.Guilhem Moulin2015-06-071
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* Reload Postfix upon configuration change, but don't restart it.Guilhem Moulin2015-06-071
| | | | | | (Unless a new instance is created, or the master.cf change is modified.) Changing some variables, such as inet_protocols, require a full restart, but most of the time it's overkill.
* Don't restart/reload Postifx upon change of a file based database.Guilhem Moulin2015-06-071
| | | | | | And don't restart or reload either upon change of pcre: files that are used by smtpd(8), cleanup(8) or local(8), following the suggestion from http://www.postfix.org/DATABASE_README.html#detect .
* wibbleGuilhem Moulin2015-06-072
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* Remove IPSec related files.Guilhem Moulin2015-06-071
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* Tel logcheck which logs to monitor.Guilhem Moulin2015-06-071
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* Replace IPSec tunnels by app-level ephemeral TLS sessions.Guilhem Moulin2015-06-073
| | | | | For some reason giraff doesn't like IPSec. App-level TLS sessions are less efficient, but thanks to ansible it still scales well.
* Log SASL usernames for longer, but don't include mail.log into syslog.Guilhem Moulin2015-06-071
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* Fix syntax error.Guilhem Moulin2015-06-071
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* Don't install 'unhide.rb'.Guilhem Moulin2015-06-071
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* Don't use generic maps.Guilhem Moulin2015-06-071
| | | | | | | | | | | | | | | | | In fact we want to only rewrite the envelope sender: :/etc/postfix/main.cf # Overwrite local FQDN envelope sender addresses sender_canonical_classes = envelope_sender propagate_unmatched_extensions = sender_canonical_maps = cdb:$config_directory/sender_canonical :/etc/postfix/sender_canonical @elefant.fripost.org admin@fripost.org However, when canonical(5) processes a mail sent vias sendmail(1), it rewrites the envelope sender which seems to *later* be use as From: header.
* Generate certs for Dovecot and Nginx if they are not there.Guilhem Moulin2015-06-071
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* Make genkeypair.sh able to display TXT record for DKIM signatures.Guilhem Moulin2015-06-072
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* Add support for CSR and subjectAltName in genkeypair.sh.Guilhem Moulin2015-06-071
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* More logcheck-database tweaks.Guilhem Moulin2015-06-071
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* logcheck-database tweaks.Guilhem Moulin2015-06-071
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* Don't require a PKI for IPSec.Guilhem Moulin2015-06-072
| | | | | | | | | | | Instead, generate a server certificate for each host (on the machine itself). Then fetch all these certs locally, and copy them over to each IPSec peer. That requires more certs to be stored on each machines (n vs 2), but it can be done automatically, and is easier to deploy. Note: When adding a new machine to the inventory, one needs to run the playbook on that machine (to generate the cert and fetch it locally) first, then on all other machines.
* Don't try to start smart on VMs.Guilhem Moulin2015-06-071
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