added dedicated documentation about tools for admins

doc/Home.md

@@ -34,6 +34,7 @@ Friendica Documentation and Resources
 * [Using SSL with Friendica](help/SSL)
 * [Config values that can only be set in .htconfig.php](help/htconfig)
 * [Improve Performance](help/Improve-Performance)
+* [Administration Tools](help/tools)
 
 **Developer Manual**
 

doc/de/Home.md

@@ -36,6 +36,7 @@ Friendica - Dokumentation und Ressourcen
 * [Betreibe deine Seite mit einem SSL-Zertifikat](help/SSL)
 * [Konfigurationswerte, die nur in der .htconfig.php gesetzt werden können](help/htconfig) (EN)
 * [Performance verbessern](help/Improve-Performance)
+* [Administration Werkzeuge](help/tools) (EN)
 
 **Dokumentation für Entwickler**
 

doc/tools.md

@@ -0,0 +1,76 @@
+Admin Tools
+===========
+
+* [Home](help)
+
+Friendica Tools
+---------------
+
+Friendica has a build in command console you can find in the *bin* directory.
+The console provides the following commands:
+
+* config:                 Edit site config
+* createdoxygen:          Generate Doxygen headers
+* dbstructure:            Do database updates
+* docbloxerrorchecker:    Check the file tree for DocBlox errors
+* extract:                Generate translation string file for the Friendica project (deprecated)
+* globalcommunityblock:   Block remote profile from interacting with this node
+* globalcommunitysilence: Silence remote profile from global community page
+* archivecontact:         Archive a contact when you know that it isn't existing anymore
+* help:                   Show help about a command, e.g (bin/console help config)
+* autoinstall:            Starts automatic installation of friendica based on values from htconfig.php
+* maintenance:            Set maintenance mode for this node
+* newpassword:            Set a new password for a given user
+* php2po:                 Generate a messages.po file from a strings.php file
+* po2php:                 Generate a strings.php file from a messages.po file
+* typo:                   Checks for parse errors in Friendica files
+
+Please consult *bin/console help* on the command line interface of your server for details about the commands.
+
+3rd Party Tools
+---------------
+
+In addition to the tools Friendica includes, some 3rd party tools can make your admin days easier.
+
+### Fail2ban
+
+Fail2ban is an intrusion prevention framework ([see Wikipedia](https://en.wikipedia.org/wiki/Fail2ban)) that you can use to forbid access to a server under certain conditions, e.g. 3 failed attempts to log in, for a certain amount of time.
+
+The following configuration was [provided](https://forum.friendi.ca/display/174591b4135ae40c1ad7e93897572454) by Steffen K9 using Debian.
+You need to adjust the *logpath* in the *jail.local* file and the *bantime* (value is in seconds).
+
+In */etc/fail2ban/jail.local* create a section for Friendica:
+
+	[friendica]
+	enabled = true
+	findtime = 300
+	bantime  = 900
+	filter = friendica
+	port = http,https
+	logpath = /var/log/friend.log
+	logencoding = utf-8
+
+And create a filter definition in */etc/fail2ban/filter.d/friendica.conf*:
+
+	[Definition]
+	failregex = ^.*Login\.php.*failed login attempt.*from IP <HOST>.*$
+	ignoreregex =
+
+Additionally you have to define the number of failed logins before the ban should be activated.
+This is done either in the global configuration or for each jail separately.
+You should inform your users about the number of failed login attempts you grant them.
+Otherwise you'll get many reports about the server not functioning if the number is too low.
+
+### Log rotation
+
+If you have activated the logs in Friendica, be aware that they can grow to a significant size.
+To keep them in control you should add them to the automatic [log rotation](https://en.wikipedia.org/wiki/Log_rotation), e.g. using the *logrotate* command.
+
+In */etc/logrotate.d/* add a file called *friendica* that contains the configuration.
+The following will compress */var/log/friendica* (assuming this is the location of the log file) on a daily basis and keep 2 days of back-log.
+
+	/var/log/friendica.log {
+		compress
+		daily
+		rotate 2
+	}