diff --git a/install/lib/install.lib.php b/install/lib/install.lib.php
index c58ca51ef8cd72b08635f08ed994b8160f522697..2f601e31c33e90d05ce129932ab6bd70dee4656d 100644
--- a/install/lib/install.lib.php
+++ b/install/lib/install.lib.php
@@ -220,6 +220,23 @@ function get_distname() {
 		}
 	}
 
+    //** Devuan
+    elseif(file_exists('/etc/devuan_version')) {
+		if(false !== strpos(trim(file_get_contents('/etc/devuan_version')), 'jessie')) {
+			$distname = 'Devuan';
+			$distver = 'Jessie';
+			$distid = 'debian60';
+			$distbaseid = 'debian';
+			swriteln("Operating System: Devuan 1.0 (Jessie) or compatible\n");
+		} elseif(false !== strpos(trim(file_get_contents('/etc/devuan_version')), 'ceres')) {
+            $distname = 'Devuan';
+            $distver = 'Ceres';
+            $distid = 'debiantesting';
+            $distbaseid = 'debian';
+            swriteln("Operating System: Devuan Unstable (Ceres) or compatible\n");
+        }
+    }
+
 	//** OpenSuSE
 	elseif(file_exists('/etc/SuSE-release')) {
 		if(stristr(file_get_contents('/etc/SuSE-release'), '11.0')) {
diff --git a/install/lib/installer_base.lib.php b/install/lib/installer_base.lib.php
index 8e328228cae6a1adaeb2b053a40fa68fe66a9282..05ff5e4483e6f653ca60a2e3204fa39ece40b3f0 100644
--- a/install/lib/installer_base.lib.php
+++ b/install/lib/installer_base.lib.php
@@ -1484,7 +1484,7 @@ class installer_base {
 	public function configure_spamassassin() {
 		global $conf;
 
-		//* Enable spamasasssin on debian and ubuntu
+		//* Enable spamasasssin on debian, devuan and ubuntu
 		$configfile = '/etc/default/spamassassin';
 		if(is_file($configfile)) {
 			copy($configfile, $configfile.'~');
diff --git a/install/tpl/nginx_apps.vhost.master b/install/tpl/nginx_apps.vhost.master
index e1bb6d1849d40e2eb3681ac807c98860f07f6c1c..701f3defb1db35963a2c7a04f7b3fe097f8b968b 100644
--- a/install/tpl/nginx_apps.vhost.master
+++ b/install/tpl/nginx_apps.vhost.master
@@ -97,7 +97,7 @@ server {
 
                        # PHP only, required if PHP was built with --enable-force-cgi-redirect
                        fastcgi_param   REDIRECT_STATUS         200;
-                       # To access phpMyAdmin, the default user (like www-data on Debian/Ubuntu) must be used
+                       # To access phpMyAdmin, the default user (like www-data on Debian/Devuan/Ubuntu) must be used
                        {use_tcp}fastcgi_pass 127.0.0.1:9000;
                        {use_socket}fastcgi_pass unix:/var/run/php5-fpm.sock;
                        fastcgi_index index.php;
@@ -147,7 +147,7 @@ server {
 
                        # PHP only, required if PHP was built with --enable-force-cgi-redirect
                        fastcgi_param   REDIRECT_STATUS         200;
-                       # To access SquirrelMail, the default user (like www-data on Debian/Ubuntu) must be used
+                       # To access SquirrelMail, the default user (like www-data on Debian/Devuan/Ubuntu) must be used
                        {use_tcp}fastcgi_pass 127.0.0.1:9000;
                        {use_socket}fastcgi_pass unix:/var/run/php5-fpm.sock;
                        fastcgi_index index.php;
diff --git a/interface/web/admin/lib/lang/en_server_config.lng b/interface/web/admin/lib/lang/en_server_config.lng
index eb55088eb2edbc581f5b29acd3b6d263e0609f09..42dfd8a6b0acd2a789289ce7f38306012b43146e 100644
--- a/interface/web/admin/lib/lang/en_server_config.lng
+++ b/interface/web/admin/lib/lang/en_server_config.lng
@@ -94,7 +94,7 @@ $wb["named_conf_local_path_txt"] = 'BIND named.conf.local path';
 $wb["php_ini_path_cgi_txt"] = 'CGI php.ini path';
 $wb["php_ini_path_apache_txt"] = 'Apache php.ini path';
 $wb["check_apache_config_txt"] = 'Test apache configuration on restart';
-$wb["network_config_warning_txt"] = 'The network configuration option is only available for Debian and Ubuntu Servers. Do not enable this option if your network interface is not eth0.';
+$wb["network_config_warning_txt"] = 'The network configuration option is only available for Debian, Devuan and Ubuntu Servers. Do not enable this option if your network interface is not eth0.';
 $wb["CA_path_txt"] = 'CA Path';
 $wb["CA_pass_txt"] = 'CA passphrase';
 $wb["fastcgi_config_syntax_txt"] = 'FastCGI config syntax';
diff --git a/interface/web/admin/lib/lang/it_server_config.lng b/interface/web/admin/lib/lang/it_server_config.lng
index 6db41c8b7ab00cef8a1708188e412704f4e0ffa5..5e234fb214a0b1a245a33a78e872af70a870e229 100644
--- a/interface/web/admin/lib/lang/it_server_config.lng
+++ b/interface/web/admin/lib/lang/it_server_config.lng
@@ -83,7 +83,7 @@ $wb['ufw_default_forward_policy_txt'] = 'Default Forward Policy';
 $wb['ufw_default_application_policy_txt'] = 'Default Application Policy';
 $wb['ufw_log_level_txt'] = 'Livello di Log';
 $wb['website_symlinks_rel_txt'] = 'Make relative symlinks';
-$wb['network_config_warning_txt'] = 'L opzione di configurazione di rete è disponibile solo per Debian and Ubuntu Servers. Non abilitare se la tua interfaccia di rete non è eth0.';
+$wb['network_config_warning_txt'] = 'L\'opzione di configurazione di rete è disponibile solo per Debian, Devuan e Ubuntu Server. Non abilitare se la tua interfaccia di rete non è eth0.';
 $wb['CA_path_txt'] = 'Percorso CA';
 $wb['CA_pass_txt'] = 'CA passphrase';
 $wb['fastcgi_config_syntax_txt'] = 'Sintassi configurazione FastCGI';
diff --git a/server/conf/nginx_apps.vhost.master b/server/conf/nginx_apps.vhost.master
index ed5e3a49ae5160842cfbc25bbd25e7e22f6c4822..75daa4df8f1692f48eacca62c217583473d9cbbf 100644
--- a/server/conf/nginx_apps.vhost.master
+++ b/server/conf/nginx_apps.vhost.master
@@ -89,7 +89,7 @@ server {
 
                        # PHP only, required if PHP was built with --enable-force-cgi-redirect
                        fastcgi_param   REDIRECT_STATUS         200;
-                       # To access phpMyAdmin, the default user (like www-data on Debian/Ubuntu) must be used
+                       # To access phpMyAdmin, the default user (like www-data on Debian/Devuan/Ubuntu) must be used
                        {use_tcp}fastcgi_pass 127.0.0.1:9000;
                        {use_socket}fastcgi_pass unix:{fpm_socket};
                        fastcgi_index index.php;
@@ -139,7 +139,7 @@ server {
 
                        # PHP only, required if PHP was built with --enable-force-cgi-redirect
                        fastcgi_param   REDIRECT_STATUS         200;
-                       # To access SquirrelMail, the default user (like www-data on Debian/Ubuntu) must be used
+                       # To access SquirrelMail, the default user (like www-data on Debian/Devuan/Ubuntu) must be used
                        {use_tcp}fastcgi_pass 127.0.0.1:9000;
                        {use_socket}fastcgi_pass unix:{fpm_socket};
                        fastcgi_index index.php;
diff --git a/server/lib/classes/cron.d/100-monitor_system_update.inc.php b/server/lib/classes/cron.d/100-monitor_system_update.inc.php
index c610a849432e64942a1bed18baa9e5be140cda8c..f2faeeb551b3ed93c068f2ecf9119c1817cfc355 100644
--- a/server/lib/classes/cron.d/100-monitor_system_update.inc.php
+++ b/server/lib/classes/cron.d/100-monitor_system_update.inc.php
@@ -70,8 +70,8 @@ class cronjob_monitor_system_update extends cronjob {
 
 		$type = 'system_update';
 
-		/* This monitoring is only available on Debian or Ubuntu */
-		if (file_exists('/etc/debian_version')) {
+		/* This monitoring is only available on Debian, Devuan or Ubuntu */
+		if (file_exists('/etc/debian_version') || file_exists('/etc/devuan_version')) {
 
 			/*
 			 * first update the "apt database"
diff --git a/server/lib/classes/monitor_tools.inc.php b/server/lib/classes/monitor_tools.inc.php
index 369c98e1dedb1e678b7ae06549ae9d7d246f67d8..2b0252212d3211a1f77b523e34c79b857b8f72e7 100644
--- a/server/lib/classes/monitor_tools.inc.php
+++ b/server/lib/classes/monitor_tools.inc.php
@@ -207,6 +207,21 @@ class monitor_tools {
 		}
 	}
 
+    //** Devuan
+    elseif(file_exists('/etc/devuan_version')) {
+        if(false !== strpos(trim(file_get_contents('/etc/devuan_version')), 'jessie')) {
+            $distname = 'Devuan';
+            $distver = 'Jessie';
+            $distid = 'debian60';
+            $distbaseid = 'debian';
+        } elseif(false !== strpos(trim(file_get_contents('/etc/devuan_version')), 'ceres')) {
+            $distname = 'Devuan';
+            $distver = 'Testing';
+            $distid = 'debiantesting';
+            $distbaseid = 'debian';
+        }
+    }
+
 	//** OpenSuSE
 	elseif(file_exists('/etc/SuSE-release')) {
 		if(stristr(file_get_contents('/etc/SuSE-release'), '11.0')) {
@@ -450,6 +465,8 @@ class monitor_tools {
 
 		if (@is_file('/etc/debian_version')) {
 			$dist = 'debian';
+		} elseif (@is_file('/etc/devuan_version')) {
+			$dist = 'devuan';
 		} elseif (@is_file('/etc/redhat-release')) {
 			$dist = 'redhat';
 		} elseif (@is_file('/etc/SuSE-release')) {
@@ -462,6 +479,8 @@ class monitor_tools {
 		case 'log_mail':
 			if ($dist == 'debian') {
 				$logfile = '/var/log/mail.log';
+			} elseif ($dist == 'devuan') {
+				$logfile = '/var/log/mail.log';
 			} elseif ($dist == 'redhat') {
 				$logfile = '/var/log/maillog';
 			} elseif ($dist == 'suse') {
@@ -473,6 +492,8 @@ class monitor_tools {
 		case 'log_mail_warn':
 			if ($dist == 'debian') {
 				$logfile = '/var/log/mail.warn';
+			} elseif ($dist == 'devuan') {
+				$logfile = '/var/log/mail.warn';
 			} elseif ($dist == 'redhat') {
 				$logfile = '/var/log/maillog';
 			} elseif ($dist == 'suse') {
@@ -484,6 +505,8 @@ class monitor_tools {
 		case 'log_mail_err':
 			if ($dist == 'debian') {
 				$logfile = '/var/log/mail.err';
+			} elseif ($dist == 'devuan') {
+				$logfile = '/var/log/mail.err';
 			} elseif ($dist == 'redhat') {
 				$logfile = '/var/log/maillog';
 			} elseif ($dist == 'suse') {
@@ -495,6 +518,8 @@ class monitor_tools {
 		case 'log_messages':
 			if ($dist == 'debian') {
 				$logfile = '/var/log/syslog';
+			} elseif ($dist == 'devuan') {
+				$logfile = '/var/log/syslog';
 			} elseif ($dist == 'redhat') {
 				$logfile = '/var/log/messages';
 			} elseif ($dist == 'suse') {
@@ -506,6 +531,8 @@ class monitor_tools {
 		case 'log_ispc_cron':
 			if ($dist == 'debian') {
 				$logfile = $conf['ispconfig_log_dir'] . '/cron.log';
+			} elseif ($dist == 'devuan') {
+				$logfile = $conf['ispconfig_log_dir'] . '/cron.log';
 			} elseif ($dist == 'redhat') {
 				$logfile = $conf['ispconfig_log_dir'] . '/cron.log';
 			} elseif ($dist == 'suse') {
@@ -517,6 +544,8 @@ class monitor_tools {
 		case 'log_freshclam':
 			if ($dist == 'debian') {
 				$logfile = '/var/log/clamav/freshclam.log';
+			} elseif ($dist == 'devuan') {
+                $logfile = '/var/log/clamav/freshclam.log';
 			} elseif ($dist == 'redhat') {
 				$logfile = (is_file('/var/log/clamav/freshclam.log') ? '/var/log/clamav/freshclam.log' : '/var/log/freshclam.log');
 			} elseif ($dist == 'suse') {
@@ -528,6 +557,8 @@ class monitor_tools {
 		case 'log_clamav':
 			if ($dist == 'debian') {
 				$logfile = '/var/log/clamav/clamav.log';
+			} elseif ($dist == 'devuan') {
+                $logfile = '/var/log/clamav/clamav.log';
 			} elseif ($dist == 'redhat') {
 				$logfile = (is_file('/var/log/clamav/clamd.log') ? '/var/log/clamav/clamd.log' : '/var/log/maillog');
 			} elseif ($dist == 'suse') {
@@ -539,6 +570,8 @@ class monitor_tools {
 		case 'log_fail2ban':
 			if ($dist == 'debian') {
 				$logfile = '/var/log/fail2ban.log';
+			} elseif ($dist == 'devuan') {
+				$logfile = '/var/log/fail2ban.log';
 			} elseif ($dist == 'redhat') {
 				$logfile = '/var/log/fail2ban.log';
 			} elseif ($dist == 'suse') {
@@ -553,6 +586,8 @@ class monitor_tools {
 		case 'log_ispconfig':
 			if ($dist == 'debian') {
 				$logfile = $conf['ispconfig_log_dir'] . '/ispconfig.log';
+			} elseif ($dist == 'devuan') {
+				$logfile = $conf['ispconfig_log_dir'] . '/ispconfig.log';
 			} elseif ($dist == 'redhat') {
 				$logfile = $conf['ispconfig_log_dir'] . '/ispconfig.log';
 			} elseif ($dist == 'suse') {
diff --git a/server/plugins-available/firewall_plugin.inc.php b/server/plugins-available/firewall_plugin.inc.php
index 67ed2379fbbe554b595efceef048c761cbff2667..a12292495190c9ec1d8fe1f4c94d40216e18e188 100644
--- a/server/plugins-available/firewall_plugin.inc.php
+++ b/server/plugins-available/firewall_plugin.inc.php
@@ -205,7 +205,7 @@ class firewall_plugin {
 			} else {
 				//* Ensure that bastille firewall is stopped
 				exec($conf['init_scripts'] . '/' . 'bastille-firewall stop 2>/dev/null');
-				if(@is_file('/etc/debian_version')) exec('update-rc.d -f bastille-firewall remove');
+				if(@is_file('/etc/debian_version') || @is_file('/etc/devuan_version')) exec('update-rc.d -f bastille-firewall remove');
 
 				//* Start ufw firewall
 				exec('ufw --force enable');
@@ -258,12 +258,12 @@ class firewall_plugin {
 				exec('ufw disable');
 			}
 			exec($conf['init_scripts'] . '/' . 'bastille-firewall restart 2>/dev/null');
-			if(@is_file('/etc/debian_version')) exec('update-rc.d bastille-firewall defaults');
+			if(@is_file('/etc/debian_version') || @is_file('/etc/devuan_version')) exec('update-rc.d bastille-firewall defaults');
 			if(@is_file('/sbin/insserv')) exec('insserv -d bastille-firewall');
 			$app->log('Restarting the firewall', LOGLEVEL_DEBUG);
 		} else {
 			exec($conf['init_scripts'] . '/' . 'bastille-firewall stop 2>/dev/null');
-			if(@is_file('/etc/debian_version')) exec('update-rc.d -f bastille-firewall remove');
+			if(@is_file('/etc/debian_version') || @is_file('/etc/devuan_version')) exec('update-rc.d -f bastille-firewall remove');
 			if(@is_file('/sbin/insserv')) exec('insserv -r -f bastille-firewall');
 			$app->log('Stopping the firewall', LOGLEVEL_DEBUG);
 		}
@@ -275,7 +275,7 @@ class firewall_plugin {
 		global $app, $conf;
 
 		exec($conf['init_scripts'] . '/' . 'bastille-firewall stop 2>/dev/null');
-		if(@is_file('/etc/debian_version')) exec('update-rc.d -f bastille-firewall remove');
+		if(@is_file('/etc/debian_version') || @is_file('/etc/devuan_version')) exec('update-rc.d -f bastille-firewall remove');
 		if(@is_file('/sbin/insserv')) exec('insserv -r -f bastille-firewall');
 		$app->log('Stopping the firewall', LOGLEVEL_DEBUG);
 
diff --git a/server/plugins-available/network_settings_plugin.inc.php b/server/plugins-available/network_settings_plugin.inc.php
index 5ce6f934b810c64148b997690f57fc4263b41f9c..56a2512d4022bbc927a4d1f6ff0808620125cb55 100644
--- a/server/plugins-available/network_settings_plugin.inc.php
+++ b/server/plugins-available/network_settings_plugin.inc.php
@@ -86,7 +86,7 @@ class network_settings_plugin {
 			$server_config['ip_address'] != '0.0.0.0' &&
 			$server_config['gateway'] != '0.0.0.0') {
 
-			if (is_file('/etc/debian_version'))
+			if (is_file('/etc/debian_version') || is_file('/etc/devuan_version'))
 			{
 				copy('/etc/network/interfaces', '/etc/network/interfaces~');
 
diff --git a/server/plugins-available/software_update_plugin.inc.php b/server/plugins-available/software_update_plugin.inc.php
index 640d7a962b8557f529e6703efcd2d2b39d42104a..3f6ae3d8d195fdb11b9636966a4eb80dce4d8053 100644
--- a/server/plugins-available/software_update_plugin.inc.php
+++ b/server/plugins-available/software_update_plugin.inc.php
@@ -278,10 +278,10 @@ class software_update_plugin {
 		global $app;
 
 		//** Debian and compatible Linux distributions
-		if(file_exists('/etc/debian_version')) {
+		if(file_exists('/etc/debian_version') || file_exists('/etc/devuan_version')) {
 			exec("aptitude update");
 			exec("aptitude safe-upgrade -y");
-			$app->log('Execeuted Debian / Ubuntu update', LOGLEVEL_DEBUG);
+			$app->log('Execeuted Debian / Devuan / Ubuntu update', LOGLEVEL_DEBUG);
 		}
 
 		//** Gentoo Linux