===== Installing FreeRADIUS version 3.x =====
  * Ubuntu 18.04 now comes with a FreeRADIUS 3.x release.
  * Install FreeRADIUS and MySQL module.
<code bash>
sudo apt-get install libdatetime-perl
sudo apt-get install freeradius freeradius-mysql
# Answer yes to install these with their dependencies
# Please note that when this package is installed there are some things generated that can take up lots of time on slower machines.
</code>
  * Enable and Start FreeRADIUS
<code bash>
sudo systemctl enable freeradius
sudo systemctl start freeradius
</code>

-----

===== Configuring FreeRADIUS version 3.x =====
  * Do the following to configure FreeRADIUS 3.x to work with RADIUSdesk
<code bash>
# Stop the service if it is already running
sudo systemctl stop freeradius
# Backup the original FreeRADIUSdirectory
sudo mv /etc/freeradius /etc/freeradius.orig
# Extract the AMPcore modified FreeRADIUS directory
sudo tar xzf /usr/share/nginx/html/cake2/rd_cake/Setup/Radius/freeradius-3-radiusdesk.tar.gz --one-top-level=/etc/freeradius/
sudo mv /etc/freeradius/freeradius /etc/freeradius/3.0
</code>
  * Correct some PATHs for FreeRADIUS 3.x
<code bash>
sudo vi /etc/freeradius/3.0/dictionary

# Change
$INCLUDE  /etc/freeradius/dictionary_overrides/dictionary.mikrotik
$INCLUDE  /etc/freeradius/dictionary_overrides/dictionary.chillispot

# To
$INCLUDE  /etc/freeradius/3.0/dictionary_overrides/dictionary.mikrotik
$INCLUDE  /etc/freeradius/3.0/dictionary_overrides/dictionary.chillispot

sudo vi /etc/freeradius/3.0/radiusd.conf

# Change
raddbdir = /etc/freeradius

# To
raddbdir = /etc/freeradius/3.0
</code>
  * Configure the site wide shared secret. This will be the value used by <wrap em>ALL</wrap> Dynamic Clients.
<code bash>
sudo vi /etc/freeradius/3.0/sites-enabled/dynamic-clients
</code>
  * Look for this part in the file and change **FreeRADIUS-Client-Secret** to the value you choose to use.
<code bash>
#  Echo the IP address of the client.
FreeRADIUS-Client-IP-Address = "%{Packet-Src-IP-Address}"

# require_message_authenticator
FreeRADIUS-Client-Require-MA = no

# secret
FreeRADIUS-Client-Secret = "testing123"

# shortname
FreeRADIUS-Client-Shortname = "%{Packet-Src-IP-Address}"

</code>
  * Comment out the following two lines in the systemd service file
<code bash>
sudo vi /lib/systemd/system/freeradius.service
</code>
  * See this sample to see which two lines to comment out. Failing to do this will result in a broken system with FreeRADIUS not starting up during boot
<code bash>
[Unit]
Description=FreeRADIUS multi-protocol policy server
After=syslog.target network.target
Documentation=man:radiusd(8) man:radiusd.conf(5) http://wiki.freeradius.org/ http://networkradius.com/doc/

[Service]
Type=forking
PIDFile=/run/freeradius/freeradius.pid
#EnvironmentFile=-/etc/default/freeradius
#ExecStartPre=/usr/sbin/freeradius $FREERADIUS_OPTIONS -Cxm -lstdout
ExecStart=/usr/sbin/freeradius $FREERADIUS_OPTIONS
Restart=on-failure
RestartSec=5

[Install]
WantedBy=multi-user.target

</code>
  * After you completed these commands you can test if FreeRADIUS starts up fine.
<code bash>
sudo systemctl daemon-reload 
sudo systemctl restart freeradius.service
sudo systemctl status freeradius.service
</code>

<WRAP center round tip 100%>
  * If in future you need to run FreeRADIUS in debug mode on the terminal use this as a reference:
<code bash>
#Stop the current FreeRADIUS instance
sudo systemctl stop freeradius.service
#If it is perhaps stuck use killall
sudo killall freeradius
#Start it in debug mode
sudo freeradius -X
</code>
</WRAP>
-------

===== Add script to sudoers file =====

<WRAP center round alert 90%>
Failing to do this step will leave the advanced features of RADIUSdesk broken.
</WRAP>

  * To create the ability for the web server to exercise some control over FreeRADIUS, we will have a custom script which is added to the sudoers file.
  * The correct way to edit the sudoers file is by using:
<code bash>
sudo visudo
</code>
  * Add the following at the bottom
<code bash>
# Members of the admin group may gain root privileges
%admin ALL=(ALL) ALL www-data ALL = NOPASSWD:/usr/share/nginx/html/cake2/rd_cake/Setup/Scripts/radmin_wrapper.pl
</code>
  * Confirm that this line is now inside the /etc/sudoers file
<code bash>
sudo cat /etc/sudoers
</code>
  * This will allow the root user in RADIUSdesk to start and stop FreeRADIUS and also to do on-the-fly activation of debug traces.

--------------------

===== Configure MESHdesk and APdesk =====
  * If you will be using **MESHdesk** or **APdesk** this section is for you and will make life easier for you.
  * We need to configure default settings for the Coova Chilli Captive Portal which are used in both **MESHdesk** and **APdesk**.
  * Please get the following information ready.
    * The IP Address which the server can be reached through. This will typically be a public IP Address but it can also be a private IP Address if you run RADIUSdesk on a private network.
    * The FQDN for the server if you registered in on a DNS service.
    * The site wide FreeRADIUS shared secret used by the Dynamic RADIUS Clients. This was done earlier in this page when you configured the Dynamic Clients.
    * There are two files which you need to edit to reflect your installations detail.
  * For MESHdesk:
<code bash>
sudo vi /usr/share/nginx/html/cake2/rd_cake/Config/MESHdesk.php
</code>
    * Look for this bit and change accordingly:
<code php>
//_______________________________________________
//== Pre-set values for the Captive Portals
$config['Meshes']['captive_portal']['radius_1']         = '198.27.111.78'; // This will be the public IP Address of the FreeRADIUS / RADIUSdesk
//$config['ApProfiles']['captive_portal']['radius_2']         = '198.27.111.78'; //Optional second fallback RADIUS
$config['Meshes']['captive_portal']['radius_secret']    = 'testing123'; //Change this to the common site wide secret used by Dynamic RADIUS Clients
//Use DNS name in uam_url to looks more professional / or IP Address 
$config['Meshes']['captive_portal']['uam_url']          = 'http://198.27.111.78/cake2/rd_cake/dynamic_details/chilli_browser_detect/';
$config['Meshes']['captive_portal']['uam_secret']       = 'greatsecret'; //Usually you will not change this value

//$config['ApProfiles']['captive_portal']['walled_garden'] = "www.radiusdesk.com,www.google.com"; //Optional
$config['Meshes']['captive_portal']['swap_octet']       = true;
$config['Meshes']['captive_portal']['mac_auth']         = true;
//$config['Meshes']['captive_portal']['coova_optional']   = "ssid=radiusdesk";
</code>
  * For APdesk
<code bash>
sudo vi /usr/share/nginx/html/cake2/rd_cake/Config/ApProfiles.php
</code>
  * Look for this bit and change accordingly:
<code php>
//_______________________________________________
//== Pre-set values for the Captive Portals
$config['ApProfiles']['captive_portal']['radius_1']         = '198.27.111.78'; // This will be the public IP Address of the FreeRADIUS / RADIUSdesk
//$config['ApProfiles']['captive_portal']['radius_2']         = '198.27.111.78'; //Optional second fallback RADIUS
$config['ApProfiles']['captive_portal']['radius_secret']    = 'testing123'; //Change this to the common site wide secret used by Dynamic RADIUS Clients
//Use DNS name in uam_url to look more professional / or IP Address 
$config['ApProfiles']['captive_portal']['uam_url']          = 'http://198.27.111.78/cake2/rd_cake/dynamic_details/chilli_browser_detect/';
$config['ApProfiles']['captive_portal']['uam_secret']       = 'greatsecret'; //Usually you will not change this value

//$config['ApProfiles']['captive_portal']['walled_garden'] = "www.radiusdesk.com,www.google.com"; //Optional
$config['ApProfiles']['captive_portal']['swap_octet']       = true;
$config['ApProfiles']['captive_portal']['mac_auth']         = true;
//$config['ApProfiles']['captive_portal']['coova_optional']   = "ssid=radiusdesk";
//__________________________________________________
</code>

  * By defining these items the Add Captive Portal Exit Point windows will be **pre-populated** for you, making it **a snap** to add new Captive Portals to either a mesh or an Access Point profile. :-D

===== Next steps =====
  * Be sure to also install **Node.js**.
  * [[getting_started:18_install_ubuntu_node_js|Install node.js]]