Commit Graph

123 Commits

Author SHA1 Message Date
Joshua Tauberer bc79319864 Merge pull request #494 from anoma/fail2ban-recidive
Activate FAIL2BAN recidive jail
2015-12-22 08:11:19 -05:00
Joshua Tauberer 20e11bbab3 fail2ban: whitelist our machine's public ip address so status checks dont cause bans of the machine itself 2015-12-07 08:45:59 -05:00
Joshua Tauberer 4995cebc38 add additional comments explaining why the IMAP special folders are set up as they are 2015-11-01 07:30:15 -05:00
Michael Kroes 9b1e04b1e8 Merge remote-tracking branch 'upstream/master' into z-push-update 2015-10-31 03:08:54 -04:00
Michael Kroes 90836eff5b For a new user create the archive folder 2015-10-27 02:20:00 -04:00
Michael Kroes 914cf68651 Remove default comments from imap config 2015-10-25 13:26:38 -04:00
Michael Kroes 4db82d3d09 Caldav doesnt support sync tokens 2015-10-25 13:19:22 -04:00
Michael Kroes 5055ef060d Change configuration options for new version of z-push 2015-10-25 08:29:57 -04:00
Joshua Tauberer f046031b26 nginx-ssl.conf changes were partially incorrect, partial revert of 834c42bc50
My own /etc/nginx/nginx.conf was messed up, so what I thought were Ubuntu 14.04 defaults weren't, and we lost the ssl_protocols and ssl_prefer_server_ciphers settings. This puts those back.

https://discourse.mailinabox.email/t/dev-master-version-reported-as-poodle-attack-vulnerable-by-ssllabs/898
2015-10-24 11:36:18 +00:00
Joshua Tauberer 274e5ca676 let dovecot automatically create mailbox folders rather than doing it manually in the management daemon, fixes #554 2015-10-18 11:55:27 +00:00
Joshua Tauberer 834c42bc50 move nginx-ssl to be a global configuration file rather than including it into each server block 2015-09-27 17:13:11 +00:00
Joshua Tauberer 93c2258d23 let the HSTS header be controlled by the management daemon so some domains can choose to enable preload 2015-09-08 21:20:50 +00:00
anoma ae3ae0b5ba Revert to default FAIL2BAN findtime for SSH jail
I propose that the default 600s/10minute find time is a better test duration for this ban. The altered 120s findtime sounds reasonable until you consider that attackers can simply throttle to 3 attempts per minute and never be banned.

The remaining non default jail settings of maxretry = 7 and bantime = 3600 I believe are good.
2015-09-07 08:36:59 +01:00
anoma 42d657eb54 Unnecessary config item, inherited from default jail.conf 2015-09-07 08:28:54 +01:00
Joshua Tauberer 2c29d59895 Merge pull request #478 from kri3v/patch-1
Added more bantime and lowered max retry attempts
2015-09-05 11:42:36 -04:00
Stefan Dimitrov 42dd46e305 Update nginx-primaryonly.conf
Nginx should be connecting over the local interface, not to the IP the resolver gives it. Elsewhere in this file proxy_pass uses 127.0.0.1 as it should.
2015-08-28 15:07:47 -04:00
Joshua Tauberer 5f17abc856 Merge pull request #463 from PortableTech/master
outgoing_mail_header_filters use local hostname and ip
2015-07-11 17:21:55 -04:00
anoma 593fd242bf Activate FAIL2BAN recidive jail
Recidive can be thought of as FAIL2BAN checking itself. This setup will monitor the FAIL2BAN log and if 10 bans are seen within one day activate a week long ban and email the mail in a box admin that it has been applied . These bans survive FAIL2BAN service restarts so are much stronger which obviously means we need to be careful with them.

Our current settings are relatively safe and definitely not easy to trigger by mistake e.g to activate a recidive IP jail by failed SSH logins a user would have to fail logging into SSH  6 times in 10 minutes, get banned, wait for the ban to expire and then repeat this process 9 further times within a 24 hour period.

The default maxretry of 5 is much saner but that can be applied once users are happy with this jail. I have been running a stronger version of this for months and it does a very good job of ejecting persistent abusers.
2015-07-07 12:37:42 +01:00
anoma e591d9082f Ultra safe dovecot findtime and maxretry settings
Explicitly set the timings and counts for the dovecot jail rather than change the global [DEFAULT] and inherit it for this one jail. These settings are far too safe so a future PR should increase security here.
2015-07-06 13:44:53 +01:00
anoma b6f26c0f1e Revert to defaults FAIL2BAN findtime and maxretry
Reverts the remaining FAIL2BAN settings to default: findtime 600 and maxretry 3. As jail settings override default settings this was hardly being used anyway so it is better to explicitly set it per jail as and when required.
2015-07-06 13:42:41 +01:00
PortableTech 07beef3db2 outgoing_mail_header_filters use local hostname and ip
Modify outgoing_mail_header_filters and mail-postfix.sh
files to result in the primary hostname, and the public
ip of the server showing in the first mail header route
instead of unknown and 127.0.0.1.  This could help lower
the spam score of mail sent from your server to some
public mail services.
2015-07-02 16:04:56 -04:00
kri3v dd0bdef640 Added more bantime and lowered max retry attempts
Ban time was too low for preventing ssh brute force attacks, this change also allows to keep the auth.log more clean and avoid wasting cpu and i/o on this. 

Bots eventually will flag your IP as secure and move along.
2015-07-02 12:55:43 -03:00
anoma b2eaaeca4b Revert to default 6 ssh/ddos login attempts
No legitimate admin will require 20 login attempts. The default 6 is a sane middle ground especially since in 10 minutes they can try again  or immediately from another IP anyway.
2015-07-02 10:23:48 +01:00
anoma e2d9a523c3 Cleanup blank lines, comments and whitespace to make it easier to follow 2015-07-02 10:19:37 +01:00
anoma 11df1e4680 Unnecessary config item, inherited from default jail.conf 2015-07-02 10:10:50 +01:00
anoma 53d5542402 Revert to default 600 second ban time
A 60 second/1 minute ban time is not long enough to counter brute force attacks which is the main purpose of fail2ban for mail in a box. The default bantime of 10 minutes is still sane and I think we have proven fail2ban is reliable enough not to cause problems in general. It is not worth sacrificing security for the rare case where an admin locks themselves out for 10 minutes.
2015-07-02 10:08:50 +01:00
anoma bfda3f40b9 Unnecessary config item, inherited from default jail.conf 2015-07-02 09:55:59 +01:00
Joshua Tauberer 53f84a8092 set ssl_stapling_verify back to on, reverts part of 47de93961e
The sslmate guidance changed. See #458.
2015-06-27 07:14:16 -04:00
Marc Schiller 0cc20cbb97 Fixed a bug where autoconfiguration for Z-Push fails due to case of URL. 2015-06-25 11:56:33 +02:00
Joshua Tauberer be2b5a62de ownCloud updated to version 8.0.4 2015-06-14 16:04:07 +00:00
bizonix 2c90c267bd fix loop redirecting
server is redirecting the request for this address in a way that will never complete
2015-06-07 21:50:41 +03:00
Joshua Tauberer 47de93961e OCSP improvements
* Set ssl_stapling_verify to off per https://sslmate.com/blog/post/ocsp_stapling_in_apache_and_nginx ('on' has no security benefits).
* Set resolver to 127.0.0.1, instead of Google Public DNS, because we might as well use our local nameserver anyway.
* Remove the commented line which per the link above would never be necessary anyway.

OCSP seems to work just fine after these changes.
2015-06-06 23:24:09 +00:00
Joshua Tauberer 5008cc603e merge - munin system monitoring 2015-06-06 12:52:22 +00:00
Joshua Tauberer 95173bb327 provide redirects from www subdomains of zones to their parent domain
* Split the nginx templates again so we have just the part needed to make a domain do a redirect separate from the rest.
* Add server blocks to the nginx config for these domains.
* List these domains in the SSL certificate install admin panel.
* Generate default 'www' records just for domains we provide default redirects for.

Fixes #321.
2015-06-04 12:19:01 +00:00
Joshua Tauberer a0e6c7ceb6 fix downloading dotfiles through ownCloud's webdav
fixes #414
2015-05-30 18:03:37 +00:00
Joshua Tauberer a9ed9ae936 more work on munin
* install the munin-node package
* don't install munin-plugins-extra (if the user wants it they can add it)
* expose the munin www directory via the management daemon so that it can handle authorization, rather than manintaining a separate password file
2015-05-25 17:03:52 +00:00
Joshua Tauberer ce94ef38b2 anonymize X-Pgp-Agent, Mime-Version outgoing mail headers; fixes #342
I don't have a mail client that sets Mime-Version with a user agent string so I couldn't really test.
2015-05-03 14:03:59 +00:00
Joshua Tauberer 6bb8f5d889 ownCloud 8 busted MOD_X_ACCEL_REDIRECT_ENABLED
see https://github.com/owncloud/core/issues/14976

We will need to update when ownCloud makes this better with MOD_X_ACCEL_REDIRECT_PREFIX.

See https://discourse.mailinabox.email/t/owncloud-can-not-read-uploaded-data/428.
2015-04-20 22:18:45 +00:00
H8H c443524ee2 Configure fail2ban jails to prevent dumb brute-force attacks against postfix, dovecot and ssh. See #319 2015-03-08 01:13:55 +01:00
BiZoNiX e14b2826e0 Disable viewing dotfiles (.htaccess, .svn, .git, etc.) 2015-02-09 19:41:42 +02:00
ikarus 3a09b04786 hide nginx version an OS information for better privacy. 2015-02-01 20:13:03 +01:00
ikarus e330abd587 do better redirection from http to https
Redirect using the 'return' directive and the built-in
variable '$request_uri' to avoid any capturing, matching
or evaluation of regular expressions.

It's best practice. See: http://wiki.nginx.org/Pitfalls#Taxing_Rewrites
2015-02-01 01:32:07 +01:00
Joshua Tauberer b9ca74c915 implement Mozilla (e.g. Thunderbird) autoconfiguration file
fixes #241
2015-01-31 21:33:18 +00:00
H8H 6efeff6fce [Z-Push] Owncloud doesnt't support CARDDAV_SUPPORTS_SYNC, so set it to false 2014-12-29 16:35:47 +01:00
Joshua Tauberer 31d6128a2b nginx: explicitly listen on both ipv4 and ipv6 (works even if ipv6 isn't present) 2014-11-30 14:41:30 +00:00
Joshua Tauberer 06f2477cfd the new iOS configuration profile also is used on OS X 10.10.1, see #261 2014-11-18 16:32:37 +00:00
Joshua Tauberer cdaa2c847d [merge] iOS Mobile Configuration Profile 2014-11-14 13:56:18 +00:00
Joshua Tauberer b04addda9a move the mobileconfig into the conf directory as a plain XML file and handle substitutions and copying to /var in web.sh 2014-11-14 13:52:29 +00:00
Norman 5775cab175 various fixes 2014-11-06 15:33:08 +01:00
David Piggott be9d97902f Disable encapsulation of spam and marking of it as seen 2014-10-28 15:15:21 +00:00