Added Fail2ban instructions

README.md

@@ -35,6 +35,7 @@ This fork has the following changes:
 * Privacy/GDPR friendly (no: Social, Gravatar, Facebook, Google, Twitter, DropBox, OwnCloud, X-Mailer)
 * Admin uses password_hash/password_verify
 * Auth failed attempts written to syslog
+* Added Fail2ban instructions
 * ES2015 (removed polyfills and Modernizr)
 * PHP 7.3+ required
 * PHP mbstring extension required

fail2ban/README.md

@@ -0,0 +1,39 @@
+# Fail2ban Instructions
+
+This modified version of RainLoop logs to the system (when syslog works in PHP).
+
+If you use other ports then http, https & 2096, modify them in /filter.d/*.conf
+
+## Systemd journal PHP-FPM
+
+Upload the following to /etc/fail2ban/*
+
+- /filter.d/rainloop-fpm-journal.conf
+- /jail.d/rainloop-fpm-journal.conf
+
+Modify your /etc/fail2ban/jail.local with:
+
+<code>[rainloop-fpm-journal]<br/>
+enabled = true</code>
+
+## Default log (not recommended)
+
+Modify /PATH-TO-RAINLOOP-DATA/_data_/_default_/configs/application.ini
+
+<code>[logs]<br/>
+auth_logging = On<br/>
+auth_logging_filename = "fail2ban/auth-fail.log"<br/>
+auth_logging_format = "[{date:Y-m-d H:i:s T}] Auth failed: ip={request:ip} user={imap:login} host={imap:host} port={imap:port}"
+</code>
+
+Modify the path in /jail.d/rainloop-log.conf
+
+Upload the following to /etc/fail2ban/*
+
+- /filter.d/rainloop-log.conf
+- /jail.d/rainloop-log.conf
+
+Modify your /etc/fail2ban/jail.local with:
+
+<code>[rainloop-log]<br/>
+enabled = true</code>

fail2ban/filter.d/rainloop-fpm-journal.conf

@@ -0,0 +1,8 @@
+[INCLUDES]
+before = common.conf
+[Definition]
+failregex = Auth failed: ip=<HOST> user=.*$
+ignoreregex =
+_daemon = php-fpm
+journalmatch = _SYSTEMD_UNIT=php-fpm.service SYSLOG_FACILITY=10
+#journalmatch = _SYSTEMD_UNIT=php-fpm.service SYSLOG_FACILITY=10 SYSLOG_IDENTIFIER=rainloop PRIORITY=3

fail2ban/filter.d/rainloop-log.conf

@@ -0,0 +1,5 @@
+[INCLUDES]
+#before = common.conf
+[Definition]
+failregex = Auth failed: ip=<HOST> user=.* host=.* port=.*$
+ignoreregex =

fail2ban/jail.d/rainloop-fpm-journal.conf

@@ -0,0 +1,5 @@
+[rainloop-fpm-journal]
+filter  = rainloop-fpm-journal
+port    = http,https,2096
+backend = systemd
+maxretry = 3

fail2ban/jail.d/rainloop-log.conf

@@ -0,0 +1,5 @@
+[rainloop-log]
+filter  = rainloop-log
+port    = http,https,2096
+logpath = /PATH-TO-RAINLOOP-DATA/_data_/_default_/logs/fail2ban/auth-fail.log
+maxretry = 3