diff --git a/README.md b/README.md
index e1f78dff..0c01357a 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
 ![](https://i.imgur.com/xeKD93p.png)
-[![Release 2.3](https://img.shields.io/badge/Release-2.3-green.svg)](https://github.com/billz/raspap-webgui/releases) [![Awesome](https://awesome.re/badge.svg)](https://github.com/thibmaek/awesome-raspberry-pi) [![Financial Contributors on Open Collective](https://opencollective.com/raspap/all/badge.svg?label=financial+contributors)](https://opencollective.com/raspap) ![https://travis-ci.com/billz/raspap-webgui/](https://img.shields.io/travis/com/billz/raspap-webgui/master) [![Twitter URL](https://img.shields.io/twitter/url?label=%40RaspAP&logoColor=%23d8224c&url=https%3A%2F%2Ftwitter.com%2Frasp_ap)](https://twitter.com/rasp_ap) [![Subreddit subscribers](https://img.shields.io/reddit/subreddit-subscribers/RaspAP?style=social)](https://www.reddit.com/r/RaspAP/)
+[![Release 2.3.1](https://img.shields.io/badge/Release-2.3.1-green.svg)](https://github.com/billz/raspap-webgui/releases) [![Awesome](https://awesome.re/badge.svg)](https://github.com/thibmaek/awesome-raspberry-pi) [![Financial Contributors on Open Collective](https://opencollective.com/raspap/all/badge.svg?label=financial+contributors)](https://opencollective.com/raspap) ![https://travis-ci.com/billz/raspap-webgui/](https://img.shields.io/travis/com/billz/raspap-webgui/master) [![Twitter URL](https://img.shields.io/twitter/url?label=%40RaspAP&logoColor=%23d8224c&url=https%3A%2F%2Ftwitter.com%2Frasp_ap)](https://twitter.com/rasp_ap) [![Subreddit subscribers](https://img.shields.io/reddit/subreddit-subscribers/RaspAP?style=social)](https://www.reddit.com/r/RaspAP/)
 
 RaspAP lets you quickly get a WiFi access point up and running to share the internet connectivity of a Raspberry Pi. Our famous [Quick installer](#quick-installer) creates a known-good default configuration that "just works" on all current Raspberry Pis with onboard wireless. A handsome responsive interface gives you control over the relevant services and networking options. OpenVPN client support, SSL, security audits, themes and multilingual options round out the package. 
 
@@ -21,6 +21,7 @@ We hope you enjoy using RaspAP as much as we do creating it. Tell us how you use
  - [Support us](#support-us)
  - [Manual installation](#manual-installation)
  - [802.11ac 5GHz support](#80211ac-5ghz-support)
+ - [Supported operating systems](#supported-operating-systems)
  - [Multilingual support](#multilingual-support)
  - [HTTPS support](#https-support)
  - [OpenVPN support](#openvpn-support)
@@ -86,6 +87,20 @@ Detailed manual setup instructions are provided [on our wiki](https://github.com
 ## 802.11ac 5GHz support
 RaspAP provides an 802.11ac wireless mode option for supported hardware (currently the RPi 3B+/4) and wireless regulatory domains. See [this FAQ](https://github.com/billz/raspap-webgui/wiki/FAQs#80211ac) for more information. 
 
+## Supported operating systems
+RaspAP was originally made for Raspbian, but now also installs on the following Debian-based distros.
+
+| Distribution | Release  | Architecture | Support |
+|---|:---:|:---:|:---:|
+| Raspbian | Buster | ARM | Official |
+| Armbian | Buster | [ARM](https://docs.armbian.com/#supported-chips) | Official |
+| Debian  |  Buster | ARM / x86_64  | Beta |
+| Ubuntu  |  18.04 LTS / 19.10 | ARM / x86_64  | Beta |
+
+![](https://i.imgur.com/luiyYNw.png)
+
+We find Armbian particularly well-suited for this project. Please note that "supported" is not a guarantee. If you are able to improve support for your preferred distro, we encourage you to [actively contribute](#how-to-contribute) to the project.
+
 ## Multilingual support
 RaspAP uses [GNU Gettext](https://www.gnu.org/software/gettext/) to manage multilingual messages. In order to use RaspAP with one of our supported translations, you must configure a corresponding language package on your RPi. To list languages currently installed on your system, use `locale -a` at the shell prompt. To generate new locales, run `sudo dpkg-reconfigure locales` and select any other desired locales. Details are provided on our [wiki](https://github.com/billz/raspap-webgui/wiki/Translations#raspap-in-your-language). 
 
diff --git a/config/config.php b/config/config.php
index df525a7c..ef853bd8 100755
--- a/config/config.php
+++ b/config/config.php
@@ -1,6 +1,6 @@
 <?php
 
-define('RASPI_VERSION', '2.3');
+define('RASPI_VERSION', '2.3.1');
 define('RASPI_CONFIG', '/etc/raspap');
 define('RASPI_CONFIG_NETWORKING', RASPI_CONFIG.'/networking');
 define('RASPI_ADMIN_DETAILS', RASPI_CONFIG.'/raspap.auth');
@@ -9,7 +9,7 @@ define('RASPI_CACHE_PATH', sys_get_temp_dir() . '/raspap');
 
 // Constants for configuration file paths.
 // These are typical for default RPi installs. Modify if needed.
-define('RASPI_DNSMASQ_CONFIG', '/etc/dnsmasq.conf');
+define('RASPI_DNSMASQ_CONFIG', '/etc/dnsmasq.d/090_raspap.conf');
 define('RASPI_DNSMASQ_LEASES', '/var/lib/misc/dnsmasq.leases');
 define('RASPI_ADBLOCK_LISTPATH', '/etc/raspap/adblock/');
 define('RASPI_ADBLOCK_CONFIG', '/etc/dnsmasq.d/090_adblock.conf');
@@ -32,7 +32,7 @@ define('RASPI_WIFICLIENT_ENABLED', true);
 define('RASPI_HOTSPOT_ENABLED', true);
 define('RASPI_NETWORK_ENABLED', true);
 define('RASPI_DHCP_ENABLED', true);
-define('RASPI_ADBLOCK_ENABLED', true);
+define('RASPI_ADBLOCK_ENABLED', false);
 define('RASPI_OPENVPN_ENABLED', false);
 define('RASPI_TORPROXY_ENABLED', false);
 define('RASPI_CONFAUTH_ENABLED', true);
diff --git a/includes/defaults.php b/includes/defaults.php
index 8631b7ef..197f8c05 100755
--- a/includes/defaults.php
+++ b/includes/defaults.php
@@ -5,7 +5,7 @@ if (!defined('RASPI_CONFIG')) {
 }
 
 $defaults = [
-  'RASPI_VERSION' => '2.3',
+  'RASPI_VERSION' => '2.3.1',
   'RASPI_CONFIG_NETWORKING' => RASPI_CONFIG.'/networking',
   'RASPI_ADMIN_DETAILS' => RASPI_CONFIG.'/raspap.auth',
   'RASPI_WIFI_CLIENT_INTERFACE' => 'wlan0',
@@ -33,7 +33,7 @@ $defaults = [
   'RASPI_HOTSPOT_ENABLED' => true,
   'RASPI_NETWORK_ENABLED' => true,
   'RASPI_DHCP_ENABLED' => true,
-  'RASPI_ADBLOCK_ENABLED' => true,
+  'RASPI_ADBLOCK_ENABLED' => false,
   'RASPI_OPENVPN_ENABLED' => false,
   'RASPI_TORPROXY_ENABLED' => false,
   'RASPI_CONFAUTH_ENABLED' => true,
diff --git a/index.php b/index.php
index 7dcdacb8..247baed4 100755
--- a/index.php
+++ b/index.php
@@ -13,7 +13,7 @@
  * @author  Lawrence Yau <sirlagz@gmail.com>
  * @author  Bill Zimmerman <billzimmerman@gmail.com>
  * @license GNU General Public License, version 3 (GPL-3.0)
- * @version 2.3
+ * @version 2.3.1
  * @link    https://github.com/billz/raspap-webgui
  * @see     http://sirlagz.net/2013/02/08/raspap-webgui/
  */
diff --git a/installers/common.sh b/installers/common.sh
index 2ef4370f..cf3ec8f7 100755
--- a/installers/common.sh
+++ b/installers/common.sh
@@ -1,54 +1,48 @@
 #!/bin/bash
 #
-# RaspAP installation functions.
-# author: @billz
-# license: GNU General Public License v3.0
+# RaspAP installation functions
+# Author: @billz <billzimmerman@gmail.com>
+# License: GNU General Public License v3.0
+#
+# You are not obligated to bundle the LICENSE file with your RaspAP projects as long
+# as you leave these references intact in the header comments of your source files.
 
-raspap_dir="/etc/raspap"
-raspap_user="www-data"
+# Exit on error
+set -o errexit
+# Exit on error inside functions
+set -o errtrace
+# Turn on traces, disabled by default
+# set -o xtrace
+
+# Set defaults
+readonly raspap_dir="/etc/raspap"
+readonly raspap_user="www-data"
+readonly raspap_sudoers="/etc/sudoers.d/090_raspap"
+readonly raspap_dnsmasq="/etc/dnsmasq.d/090_raspap.conf"
+readonly raspap_sysctl="/etc/sysctl.d/90_raspap.conf"
+readonly rulesv4="/etc/iptables/rules.v4"
 webroot_dir="/var/www/html"
-version=`sed 's/\..*//' /etc/debian_version`
 git_source_url="https://github.com/$repo"  # $repo from install.raspap.com
 
-# Determine Raspbian version, set default home location for lighttpd and 
-# php package to install 
-if [ "$version" -eq "10" ]; then
-    version_msg="Raspbian 10.0 (Buster)"
-    php_package="php7.3-cgi"
-elif [ "$version" -eq "9" ]; then
-    version_msg="Raspbian 9.0 (Stretch)" 
-    php_package="php7.0-cgi" 
-elif [ "$version" -eq "8" ]; then
-    install_error "Raspbian 8.0 (Jessie) and php5 are deprecated. Please upgrade."
-elif [ "$version" -lt "8" ]; then
-    install_error "Raspbian ${version} is unsupported. Please upgrade."
-fi
+# NOTE: all the below functions are overloadable for system-specific installs
 
-phpcgiconf=""
-if [ "$php_package" = "php7.3-cgi" ]; then
-    phpcgiconf="/etc/php/7.3/cgi/php.ini"
-elif [ "$php_package" = "php7.0-cgi" ]; then
-    phpcgiconf="/etc/php/7.0/cgi/php.ini"
-fi
-
-### NOTE: all the below functions are overloadable for system-specific installs
-
-# Prompts user to set options for installation
-function config_installation() {
-    install_log "Configure installation"
-    echo "Detected ${version_msg}" 
+# Prompts user to set installation options
+function _config_installation() {
+    _install_log "Configure installation"
+    _get_linux_distro
+    echo "Detected OS: ${DESC}"
+    echo "Using GitHub repository: ${repo} ${branch} branch"
     echo "Install directory: ${raspap_dir}"
-    echo -n "Install to Lighttpd root directory: ${webroot_dir}? [Y/n]: "
+    echo -n "Install to lighttpd root: ${webroot_dir}? [Y/n]: "
     if [ "$assume_yes" == 0 ]; then
         read answer < /dev/tty
         if [ "$answer" != "${answer#[Nn]}" ]; then
-            read -e -p < /dev/tty "Enter alternate Lighttpd directory: " -i "/var/www/html" webroot_dir
+            read -e -p < /dev/tty "Enter alternate lighttpd directory: " -i "/var/www/html" webroot_dir
         fi
     else
         echo -e
     fi
-    echo "Install to Lighttpd directory: ${webroot_dir}"
-
+    echo "Installing to lighttpd directory: ${webroot_dir}"
     echo -n "Complete installation with these values? [Y/n]: "
     if [ "$assume_yes" == 0 ]; then
         read answer < /dev/tty
@@ -61,132 +55,230 @@ function config_installation() {
     fi
 }
 
+# Determines host Linux distrubtion details
+function _get_linux_distro() {
+    if type lsb_release >/dev/null 2>&1; then # linuxbase.org
+        OS=$(lsb_release -si)
+        RELEASE=$(lsb_release -sr)
+        CODENAME=$(lsb_release -sc)
+        DESC=$(lsb_release -sd)
+    elif [ -f /etc/os-release ]; then # freedesktop.org
+        . /etc/os-release
+        OS=$ID
+        RELEASE=$VERSION_ID
+        CODENAME=$VERSION_CODENAME
+        DESC=$PRETTY_NAME
+    else
+        _install_error "Unsupported Linux distribution"
+    fi
+}
+
+# Sets php package option based on Linux version, abort if unsupported distro
+function _set_php_package() {
+    case $RELEASE in
+        "18.04"|"19.10") # Ubuntu Server
+            php_package="php7.4-cgi"
+            phpcgiconf="/etc/php/7.4/cgi/php.ini" ;;
+        "10")
+            php_package="php7.3-cgi"
+            phpcgiconf="/etc/php/7.3/cgi/php.ini" ;;
+        "9")
+            php_package="php7.0-cgi"
+            phpcgiconf="/etc/php/7.0/cgi/php.ini" ;;
+        "8")
+            _install_error "${DESC} and php5 are not supported. Please upgrade." ;;
+        *)
+            _install_error "${DESC} is unsupported. Please install on a supported distro." ;;
+    esac
+}
+
 # Runs a system software update to make sure we're using all fresh packages
-function install_dependencies() {
-    install_log "Installing required packages"
-    sudo apt-get install $apt_option lighttpd $php_package git hostapd dnsmasq vnstat qrencode || install_error "Unable to install dependencies"
+function _install_dependencies() {
+    _install_log "Installing required packages"
+    _set_php_package
+    if [ "$php_package" = "php7.4-cgi" ]; then
+        echo "Adding apt-repository ppa:ondrej/php"
+        sudo apt-get install software-properties-common || _install_error "Unable to install dependency"
+        sudo add-apt-repository ppa:ondrej/php || _install_error "Unable to add-apt-repository ppa:ondrej/php"
+    fi
+    if [ ${OS,,} = "debian" ] || [ ${OS,,} = "ubuntu" ]; then
+        dhcpcd_package="dhcpcd5"
+    fi
+    # Set dconf-set-selections
+    echo iptables-persistent iptables-persistent/autosave_v4 boolean true | sudo debconf-set-selections
+    echo iptables-persistent iptables-persistent/autosave_v6 boolean true | sudo debconf-set-selections
+    sudo apt-get install $apt_option lighttpd git hostapd dnsmasq iptables-persistent $php_package $dhcpcd_package vnstat qrencode || _install_error "Unable to install dependencies"
 }
 
 # Enables PHP for lighttpd and restarts service for settings to take effect
-function enable_php_lighttpd() {
-    install_log "Enabling PHP for lighttpd"
-
+function _enable_php_lighttpd() {
+    _install_log "Enabling PHP for lighttpd"
     sudo lighttpd-enable-mod fastcgi-php    
     sudo service lighttpd force-reload
-    sudo systemctl restart lighttpd.service || install_error "Unable to restart lighttpd"
+    sudo systemctl restart lighttpd.service || _install_error "Unable to restart lighttpd"
 }
 
 # Verifies existence and permissions of RaspAP directory
-function create_raspap_directories() {
-    install_log "Creating RaspAP directories"
+function _create_raspap_directories() {
+    _install_log "Creating RaspAP directories"
     if [ -d "$raspap_dir" ]; then
-        sudo mv $raspap_dir "$raspap_dir.`date +%F-%R`" || install_error "Unable to move old '$raspap_dir' out of the way"
+        sudo mv $raspap_dir "$raspap_dir.`date +%F-%R`" || _install_error "Unable to move old '$raspap_dir' out of the way"
     fi
-    sudo mkdir -p "$raspap_dir" || install_error "Unable to create directory '$raspap_dir'"
+    sudo mkdir -p "$raspap_dir" || _install_error "Unable to create directory '$raspap_dir'"
 
     # Create a directory for existing file backups.
     sudo mkdir -p "$raspap_dir/backups"
 
     # Create a directory to store networking configs
+    echo "Creating $raspap_dir/networking"
     sudo mkdir -p "$raspap_dir/networking"
     # Copy existing dhcpcd.conf to use as base config
-    cat /etc/dhcpcd.conf | sudo tee -a /etc/raspap/networking/defaults
-
-    sudo chown -R $raspap_user:$raspap_user "$raspap_dir" || install_error "Unable to change file ownership for '$raspap_dir'"
+    echo "Adding /etc/dhcpcd.conf as base configuration"
+    cat /etc/dhcpcd.conf | sudo tee -a /etc/raspap/networking/defaults > /dev/null
+    echo "Changing file ownership of $raspap_dir"
+    sudo chown -R $raspap_user:$raspap_user "$raspap_dir" || _install_error "Unable to change file ownership for '$raspap_dir'"
 }
 
 # Generate hostapd logging and service control scripts
-function create_hostapd_scripts() {
-    install_log "Creating hostapd logging & control scripts"
-    sudo mkdir $raspap_dir/hostapd || install_error "Unable to create directory '$raspap_dir/hostapd'"
+function _create_hostapd_scripts() {
+    _install_log "Creating hostapd logging & control scripts"
+    sudo mkdir $raspap_dir/hostapd || _install_error "Unable to create directory '$raspap_dir/hostapd'"
 
     # Move logging shell scripts 
-    sudo cp "$webroot_dir/installers/"*log.sh "$raspap_dir/hostapd" || install_error "Unable to move logging scripts"
+    sudo cp "$webroot_dir/installers/"*log.sh "$raspap_dir/hostapd" || _install_error "Unable to move logging scripts"
     # Move service control shell scripts
-    sudo cp "$webroot_dir/installers/"service*.sh "$raspap_dir/hostapd" || install_error "Unable to move service control scripts"
+    sudo cp "$webroot_dir/installers/"service*.sh "$raspap_dir/hostapd" || _install_error "Unable to move service control scripts"
     # Make enablelog.sh and disablelog.sh not writable by www-data group.
-    sudo chown -c root:"$raspap_user" "$raspap_dir/hostapd/"*.sh || install_error "Unable change owner and/or group"
-    sudo chmod 750 "$raspap_dir/hostapd/"*.sh || install_error "Unable to change file permissions"
+    sudo chown -c root:"$raspap_user" "$raspap_dir/hostapd/"*.sh || _install_error "Unable change owner and/or group"
+    sudo chmod 750 "$raspap_dir/hostapd/"*.sh || _install_error "Unable to change file permissions"
 }
 
 # Generate lighttpd service control scripts
-function create_lighttpd_scripts() {
-    install_log "Creating lighttpd control scripts"
-    sudo mkdir $raspap_dir/lighttpd || install_error "Unable to create directory '$raspap_dir/lighttpd"
+function _create_lighttpd_scripts() {
+    _install_log "Creating lighttpd control scripts"
+    sudo mkdir $raspap_dir/lighttpd || _install_error "Unable to create directory '$raspap_dir/lighttpd"
 
     # Move service control shell scripts
-    sudo cp "$webroot_dir/installers/"configport.sh "$raspap_dir/lighttpd" || install_error "Unable to move service control scripts"
+    sudo cp "$webroot_dir/installers/"configport.sh "$raspap_dir/lighttpd" || _install_error "Unable to move service control scripts"
     # Make configport.sh writable by www-data group
-    sudo chown -c root:"$raspap_user" "$raspap_dir/lighttpd/"*.sh || install_error "Unable change owner and/or group"
-    sudo chmod 750 "$raspap_dir/lighttpd/"*.sh || install_error "Unable to change file permissions"
+    sudo chown -c root:"$raspap_user" "$raspap_dir/lighttpd/"*.sh || _install_error "Unable change owner and/or group"
+    sudo chmod 750 "$raspap_dir/lighttpd/"*.sh || _install_error "Unable to change file permissions"
+}
+
+# Prompt to install adblock
+function _prompt_install_adblock() {
+    if [ "$install_adblock" == 1 ]; then
+        _install_log "Configure ad blocking (Beta)"
+        echo -n "Download blocklists and enable ad blocking? [Y/n]: "
+        if [ "$assume_yes" == 0 ]; then
+            read answer < /dev/tty
+            if [ "$answer" != "${answer#[Nn]}" ]; then
+                echo -e
+            else
+                _install_adblock
+            fi
+        fi
+    fi
+}
+
+# Download notracking adblock lists and enable option
+function _install_adblock() {
+    _install_log "Creating ad block base configuration (Beta)"
+    notracking_url="https://raw.githubusercontent.com/notracking/hosts-blocklists/master/"
+    if [ ! -d "$raspap_dir/adblock" ]; then
+        echo "Creating $raspap_dir/adblock"
+        sudo mkdir -p "$raspap_dir/adblock"
+    fi
+    if [ ! -f /tmp/hostnames.txt ]; then
+        echo "Fetching latest hostnames list"
+        wget ${notracking_url}hostnames.txt -O /tmp/hostnames.txt || _install_error "Unable to download notracking hostnames"
+    fi
+    if [ ! -f /tmp/domains.txt ]; then
+        echo "Fetching latest domains list"
+        wget ${notracking_url}domains.txt -O /tmp/domains.txt || _install_error "Unable to download notracking domains"
+    fi
+    echo "Adding blocklists to $raspap_dir/adblock"
+    sudo cp /tmp/hostnames.txt $raspap_dir/adblock || _install_error "Unable to move notracking hostnames"
+    sudo cp /tmp/domains.txt $raspap_dir/adblock || _install_error "Unable to move notracking domains"
+
+    echo "Moving and setting permissions for blocklist update script"
+    sudo cp "$webroot_dir/installers/"update_blocklist.sh "$raspap_dir/adblock" || _install_error "Unable to move blocklist update script"
+
+    # Make blocklists and update script writable by www-data group
+    sudo chown -c root:"$raspap_user" "$raspap_dir/adblock/"*.* || _install_error "Unable to change owner/group"
+    sudo chmod 750 "$raspap_dir/adblock/"*.sh || install_error "Unable to change file permissions"
+
+    echo "Enabling ad blocking management option"
+    sudo sed -i "s/\('RASPI_ADBLOCK_ENABLED', \)false/\1true/g" "$webroot_dir/includes/config.php" || _install_error "Unable to modify config.php"
+    echo "Done."
 }
 
 # Prompt to install openvpn
-function prompt_install_openvpn() {
-    install_log "Setting up OpenVPN support (beta)"
+function _prompt_install_openvpn() {
+    _install_log "Setting up OpenVPN support"
     echo -n "Install OpenVPN and enable client configuration? [Y/n]: "
     if [ "$assume_yes" == 0 ]; then
         read answer < /dev/tty
         if [ "$answer" != "${answer#[Nn]}" ]; then
             echo -e
         else
-            install_openvpn
+            _install_openvpn
         fi
     elif [ "$ovpn_option" == 1 ]; then
-        install_openvpn
+        _install_openvpn
     fi
 }
 
 # Install openvpn and enable client configuration option
-function install_openvpn() {
-    install_log "Installing OpenVPN and enabling client configuration"
-    sudo apt-get install -y openvpn || install_error "Unable to install openvpn"
-    sudo sed -i "s/\('RASPI_OPENVPN_ENABLED', \)false/\1true/g" "$webroot_dir/includes/config.php" || install_error "Unable to modify config.php"
+function _install_openvpn() {
+    _install_log "Installing OpenVPN and enabling client configuration"
+    sudo apt-get install -y openvpn || _install_error "Unable to install openvpn"
+    sudo sed -i "s/\('RASPI_OPENVPN_ENABLED', \)false/\1true/g" "$webroot_dir/includes/config.php" || _install_error "Unable to modify config.php"
     echo "Enabling openvpn-client service on boot"
-    sudo systemctl enable openvpn-client@client || install_error "Unable to enable openvpn-client daemon"
-    create_openvpn_scripts || install_error "Unable to create openvpn control scripts"
+    sudo systemctl enable openvpn-client@client || _install_error "Unable to enable openvpn-client daemon"
+    _create_openvpn_scripts || _install_error "Unable to create openvpn control scripts"
 }
 
 # Generate openvpn logging and auth control scripts
-function create_openvpn_scripts() {
-    install_log "Creating OpenVPN control scripts"
-    sudo mkdir $raspap_dir/openvpn || install_error "Unable to create directory '$raspap_dir/openvpn'"
+function _create_openvpn_scripts() {
+    _install_log "Creating OpenVPN control scripts"
+    sudo mkdir $raspap_dir/openvpn || _install_error "Unable to create directory '$raspap_dir/openvpn'"
 
    # Move service auth control shell scripts
-    sudo cp "$webroot_dir/installers/"configauth.sh "$raspap_dir/openvpn" || install_error "Unable to move auth control script"
+    sudo cp "$webroot_dir/installers/"configauth.sh "$raspap_dir/openvpn" || _install_error "Unable to move auth control script"
     # Make configauth.sh writable by www-data group
-    sudo chown -c root:"$raspap_user" "$raspap_dir/openvpn/"*.sh || install_error "Unable change owner and/or group"
-    sudo chmod 750 "$raspap_dir/openvpn/"*.sh || install_error "Unable to change file permissions"
+    sudo chown -c root:"$raspap_user" "$raspap_dir/openvpn/"*.sh || _install_error "Unable change owner and/or group"
+    sudo chmod 750 "$raspap_dir/openvpn/"*.sh || _install_error "Unable to change file permissions"
 }
 
 # Fetches latest files from github to webroot
-function download_latest_files() {
+function _download_latest_files() {
     if [ ! -d "$webroot_dir" ]; then
-        sudo mkdir -p $webroot_dir || install_error "Unable to create new webroot directory"
+        sudo mkdir -p $webroot_dir || _install_error "Unable to create new webroot directory"
     fi
 
     if [ -d "$webroot_dir" ]; then
-        sudo mv $webroot_dir "$webroot_dir.`date +%F-%R`" || install_error "Unable to remove old webroot directory"
+        sudo mv $webroot_dir "$webroot_dir.`date +%F-%R`" || _install_error "Unable to remove old webroot directory"
     fi
 
-    install_log "Cloning latest files from github"
-    git clone --branch $branch --depth 1 $git_source_url /tmp/raspap-webgui || install_error "Unable to download files from github"
+    _install_log "Cloning latest files from github"
+    git clone --branch $branch --depth 1 $git_source_url /tmp/raspap-webgui || _install_error "Unable to download files from github"
 
-    sudo mv /tmp/raspap-webgui $webroot_dir || install_error "Unable to move raspap-webgui to web root"
+    sudo mv /tmp/raspap-webgui $webroot_dir || _install_error "Unable to move raspap-webgui to web root"
 }
 
 # Sets files ownership in web root directory
-function change_file_ownership() {
+function _change_file_ownership() {
     if [ ! -d "$webroot_dir" ]; then
-        install_error "Web root directory doesn't exist"
+        _install_error "Web root directory doesn't exist"
     fi
 
-    install_log "Changing file ownership in web root directory"
-    sudo chown -R $raspap_user:$raspap_user "$webroot_dir" || install_error "Unable to change file ownership for '$webroot_dir'"
+    _install_log "Changing file ownership in web root directory"
+    sudo chown -R $raspap_user:$raspap_user "$webroot_dir" || _install_error "Unable to change file ownership for '$webroot_dir'"
 }
 
-# Check for existing /etc/network/interfaces and /etc/hostapd/hostapd.conf files
-function check_for_old_configs() {
+# Check for existing configuration files
+function _check_for_old_configs() {
     if [ -f /etc/network/interfaces ]; then
         sudo cp /etc/network/interfaces "$raspap_dir/backups/interfaces.`date +%F-%R`"
         sudo ln -sf "$raspap_dir/backups/interfaces.`date +%F-%R`" "$raspap_dir/backups/interfaces"
@@ -197,8 +289,8 @@ function check_for_old_configs() {
         sudo ln -sf "$raspap_dir/backups/hostapd.conf.`date +%F-%R`" "$raspap_dir/backups/hostapd.conf"
     fi
 
-    if [ -f /etc/dnsmasq.conf ]; then
-        sudo cp /etc/dnsmasq.conf "$raspap_dir/backups/dnsmasq.conf.`date +%F-%R`"
+    if [ -f $raspap_dnsmasq ]; then
+        sudo cp $raspap_dnsmasq "$raspap_dir/backups/dnsmasq.conf.`date +%F-%R`"
         sudo ln -sf "$raspap_dir/backups/dnsmasq.conf.`date +%F-%R`" "$raspap_dir/backups/dnsmasq.conf"
     fi
 
@@ -207,11 +299,6 @@ function check_for_old_configs() {
         sudo ln -sf "$raspap_dir/backups/dhcpcd.conf.`date +%F-%R`" "$raspap_dir/backups/dhcpcd.conf"
     fi
 
-    if [ -f /etc/rc.local ]; then
-        sudo cp /etc/rc.local "$raspap_dir/backups/rc.local.`date +%F-%R`"
-        sudo ln -sf "$raspap_dir/backups/rc.local.`date +%F-%R`" "$raspap_dir/backups/rc.local"
-    fi
-
     for file in /etc/systemd/network/raspap-*.net*; do
         if [ -f "${file}" ]; then
             filename=$(basename $file)
@@ -222,58 +309,76 @@ function check_for_old_configs() {
 }
 
 # Move configuration file to the correct location
-function move_config_file() {
+function _move_config_file() {
     if [ ! -d "$raspap_dir" ]; then
-        install_error "'$raspap_dir' directory doesn't exist"
+        _install_error "'$raspap_dir' directory doesn't exist"
     fi
 
-    install_log "Moving configuration file to '$raspap_dir'"
-    sudo cp "$webroot_dir"/raspap.php "$raspap_dir" || install_error "Unable to move files to '$raspap_dir'"
-    sudo chown -R $raspap_user:$raspap_user "$raspap_dir" || install_error "Unable to change file ownership for '$raspap_dir'"
+    _install_log "Moving configuration file to '$raspap_dir'"
+    sudo cp "$webroot_dir"/raspap.php "$raspap_dir" || _install_error "Unable to move files to '$raspap_dir'"
+    sudo chown -R $raspap_user:$raspap_user "$raspap_dir" || _install_error "Unable to change file ownership for '$raspap_dir'"
 }
 
 # Set up default configuration
-function default_configuration() {
-    install_log "Setting up hostapd"
+function _default_configuration() {
+    _install_log "Applying default configuration to installed services"
     if [ -f /etc/default/hostapd ]; then
-        sudo mv /etc/default/hostapd /tmp/default_hostapd.old || install_error "Unable to remove old /etc/default/hostapd file"
+        sudo mv /etc/default/hostapd /tmp/default_hostapd.old || _install_error "Unable to remove old /etc/default/hostapd file"
     fi
-    sudo cp $webroot_dir/config/default_hostapd /etc/default/hostapd || install_error "Unable to move hostapd defaults file"
-    sudo cp $webroot_dir/config/hostapd.conf /etc/hostapd/hostapd.conf || install_error "Unable to move hostapd configuration file"
-    sudo cp $webroot_dir/config/dnsmasq.conf /etc/dnsmasq.conf || install_error "Unable to move dnsmasq configuration file"
-    sudo cp $webroot_dir/config/dhcpcd.conf /etc/dhcpcd.conf || install_error "Unable to move dhcpcd configuration file"
+    sudo cp $webroot_dir/config/default_hostapd /etc/default/hostapd || _install_error "Unable to move hostapd defaults file"
+    sudo cp $webroot_dir/config/hostapd.conf /etc/hostapd/hostapd.conf || _install_error "Unable to move hostapd configuration file"
+    sudo cp $webroot_dir/config/dnsmasq.conf $raspap_dnsmasq || _install_error "Unable to move dnsmasq configuration file"
+    sudo cp $webroot_dir/config/dhcpcd.conf /etc/dhcpcd.conf || _install_error "Unable to move dhcpcd configuration file"
 
     [ -d /etc/dnsmasq.d ] || sudo mkdir /etc/dnsmasq.d
 
     sudo systemctl stop systemd-networkd
     sudo systemctl disable systemd-networkd
-    sudo cp $webroot_dir/config/raspap-bridge-br0.netdev /etc/systemd/network/raspap-bridge-br0.netdev || install_error "Unable to move br0 netdev file"
-    sudo cp $webroot_dir/config/raspap-br0-member-eth0.network /etc/systemd/network/raspap-br0-member-eth0.network || install_error "Unable to move br0 member file"
+    sudo cp $webroot_dir/config/raspap-bridge-br0.netdev /etc/systemd/network/raspap-bridge-br0.netdev || _install_error "Unable to move br0 netdev file"
+    sudo cp $webroot_dir/config/raspap-br0-member-eth0.network /etc/systemd/network/raspap-br0-member-eth0.network || _install_error "Unable to move br0 member file"
 
     if [ ! -f "$webroot_dir/includes/config.php" ]; then
         sudo cp "$webroot_dir/config/config.php" "$webroot_dir/includes/config.php"
     fi
+}
 
-    # Generate required lines for Rasp AP to place into rc.local file.
-    # #RASPAP is for removal script
-    lines=(
-    'echo 1 > \/proc\/sys\/net\/ipv4\/ip_forward #RASPAP'
-    'iptables -t nat -A POSTROUTING -j MASQUERADE #RASPAP'
-    'iptables -t nat -A POSTROUTING -s 192.168.50.0\/24 ! -d 192.168.50.0\/24 -j MASQUERADE #RASPAP'
+# Install and enable RaspAP daemon
+function _enable_raspap_daemon() {
+    _install_log "Enabling RaspAP daemon"
+    echo "Disable with: sudo systemctl disable raspapd.service"
+    sudo cp $webroot_dir/installers/raspapd.service /lib/systemd/system/ || _install_error "Unable to move raspap.service file"
+    sudo systemctl daemon-reload
+    sudo systemctl enable raspapd.service || _install_error "Failed to enable raspap.service"
+}
+
+# Configure IP forwarding, set IP tables rules, prompt to install RaspAP daemon
+function _configure_networking() {
+    _install_log "Configuring networking"
+    echo "Enabling IP forwarding"
+    echo "net.ipv4.ip_forward=1" | sudo tee $raspap_sysctl > /dev/null || _install_error "Unable to set IP forwarding"
+    sudo sysctl -p $raspap_sysctl || _install_error "Unable to execute sysctl"
+    sudo /etc/init.d/procps restart || _install_error "Unable to execute procps"
+
+    echo "Checking iptables rules"
+    rules=(
+    "-A POSTROUTING -j MASQUERADE"
+    "-A POSTROUTING -s 192.168.50.0/24 ! -d 192.168.50.0/24 -j MASQUERADE"
     )
-    
-    for line in "${lines[@]}"; do
-        if grep "$line" /etc/rc.local > /dev/null; then
-            echo "$line: Line already added"
+    for rule in "${rules[@]}"; do
+        if grep -- "$rule" $rulesv4 > /dev/null; then
+            echo "Rule already exits: ${rule}"
         else
-            sudo sed -i "s/^exit 0$/$line\nexit 0/" /etc/rc.local
-            echo "Adding line $line"
+            rule=$(sed -e 's/^\(-A POSTROUTING\)/-t nat \1/' <<< $rule)
+            echo "Adding rule: ${rule}"
+            sudo iptables $rule || _install_error "Unable to execute iptables"
+            added=true
         fi
     done
-
-    # Force a reload of new settings in /etc/rc.local
-    sudo systemctl restart rc-local.service
-    sudo systemctl daemon-reload
+    # Persist rules if added
+    if [ "$added" = true ]; then
+        echo "Persisting IP tables rules"
+        sudo iptables-save | sudo tee $rulesv4 > /dev/null || _install_error "Unable to execute iptables-save"
+    fi
 
     # Prompt to install RaspAP daemon
     echo -n "Enable RaspAP control service (Recommended)? [Y/n]: "
@@ -282,106 +387,42 @@ function default_configuration() {
         if [ "$answer" != "${answer#[Nn]}" ]; then
             echo -e
         else
-            enable_raspap_daemon
+            _enable_raspap_daemon
         fi
     else
         echo -e
-        enable_raspap_daemon
+        _enable_raspap_daemon
     fi
-}
+ }
 
-# Install and enable RaspAP daemon
-function enable_raspap_daemon() {
-    install_log "Enabling RaspAP daemon"
-    echo "Disable with: sudo systemctl disable raspap.service"
-    sudo cp $webroot_dir/installers/raspap.service /lib/systemd/system/ || install_error "Unable to move raspap.service file"
-    sudo systemctl enable raspap.service || install_error "Failed to enable raspap.service"
-}
+# Add sudoers file to /etc/sudoers.d/ and set file permissions
+function _patch_system_files() {
 
-# Add a single entry to the sudoers file
-function sudo_add() {
-    sudo bash -c "echo \"$raspap_user ALL=(ALL) NOPASSWD:$1\" | (EDITOR=\"tee -a\" visudo)" \
-        || install_error "Unable to patch /etc/sudoers"
-}
-
-# Adds www-data user to the sudoers file with restrictions on what the user can execute
-function patch_system_files() {
-
-    # Set commands array
-    cmds=(
-        "/sbin/ifdown"
-        "/sbin/ifup"
-        "/bin/cat /etc/wpa_supplicant/wpa_supplicant.conf"
-        "/bin/cat /etc/wpa_supplicant/wpa_supplicant-wlan[0-9].conf"
-        "/bin/cp /tmp/wifidata /etc/wpa_supplicant/wpa_supplicant.conf"
-        "/bin/cp /tmp/wifidata /etc/wpa_supplicant/wpa_supplicant-wlan[0-9].conf"
-        "/sbin/wpa_cli -i wlan[0-9] scan_results"
-        "/sbin/wpa_cli -i wlan[0-9] scan"
-        "/sbin/wpa_cli -i wlan[0-9] reconfigure"
-        "/sbin/wpa_cli -i wlan[0-9] select_network"
-        "/bin/cp /tmp/hostapddata /etc/hostapd/hostapd.conf"
-        "/bin/systemctl start hostapd.service"
-        "/bin/systemctl stop hostapd.service"
-        "/bin/systemctl start dnsmasq.service"
-        "/bin/systemctl stop dnsmasq.service"
-        "/bin/systemctl start openvpn-client@client"
-        "/bin/systemctl enable openvpn-client@client"
-        "/bin/systemctl stop openvpn-client@client"
-        "/bin/systemctl disable openvpn-client@client"
-        "/bin/cp /tmp/ovpnclient.ovpn /etc/openvpn/client/client.conf"
-        "/bin/cp /tmp/authdata /etc/openvpn/client/login.conf"
-        "/bin/cp /tmp/dnsmasqdata /etc/dnsmasq.conf"
-        "/bin/cp /tmp/dhcpddata /etc/dhcpcd.conf"
-        "/sbin/shutdown -h now"
-        "/sbin/reboot"
-        "/sbin/ip link set wlan[0-9] down"
-        "/sbin/ip link set wlan[0-9] up"
-        "/sbin/ip -s a f label wlan[0-9]"
-        "/bin/cp /etc/raspap/networking/dhcpcd.conf /etc/dhcpcd.conf"
-        "/etc/raspap/hostapd/enablelog.sh"
-        "/etc/raspap/hostapd/disablelog.sh"
-        "/etc/raspap/hostapd/servicestart.sh"
-        "/etc/raspap/lighttpd/configport.sh"
-        "/etc/raspap/openvpn/configauth.sh"
-        "/bin/chmod o+r /tmp/hostapd.log"
-        "/bin/chmod o+r /tmp/dnsmasq.log"
-    )
-
-    # Check if sudoers needs patching
-    if [ $(sudo grep -c $raspap_user /etc/sudoers) -ne ${#cmds[@]} ]
-    then
-        # Sudoers file has incorrect number of commands. Wiping them out.
-        install_log "Cleaning system sudoers file"
-        sudo sed -i "/$raspap_user/d" /etc/sudoers
-        install_log "Patching system sudoers file"
-        # patch /etc/sudoers file
-        for cmd in "${cmds[@]}"
-        do
-            sudo_add $cmd
-            IFS=$'\n'
-        done
-    else
-        install_log "Sudoers file already patched"
+    # Create sudoers if not present
+    if [ ! -f $raspap_sudoers ]; then
+        _install_log "Adding raspap.sudoers to ${raspap_sudoers}"
+        sudo cp "$webroot_dir/installers/raspap.sudoers" $raspap_sudoers || _install_error "Unable to apply raspap.sudoers to $raspap_sudoers"
+        sudo chmod 0440 $raspap_sudoers || _install_error "Unable to change file permissions for $raspap_sudoers"
     fi
 
     # Add symlink to prevent wpa_cli cmds from breaking with multiple wlan interfaces
-    install_log "Symlinked wpa_supplicant hooks for multiple wlan interfaces"
+    _install_log "Symlinked wpa_supplicant hooks for multiple wlan interfaces"
     if [ ! -f /usr/share/dhcpcd/hooks/10-wpa_supplicant ]; then
         sudo ln -s /usr/share/dhcpcd/hooks/10-wpa_supplicant /etc/dhcp/dhclient-enter-hooks.d/
     fi
 
     # Unmask and enable hostapd.service
-    install_log "Unmasking and enabling hostapd service"
+    _install_log "Unmasking and enabling hostapd service"
     sudo systemctl unmask hostapd.service
     sudo systemctl enable hostapd.service
 }
 
 
 # Optimize configuration of php-cgi.
-function optimize_php() {
-    install_log "Optimize PHP configuration"
+function _optimize_php() {
+    _install_log "Optimize PHP configuration"
     if [ ! -f "$phpcgiconf" ]; then
-        install_warning "PHP configuration could not be found."
+        _install_warning "PHP configuration could not be found."
         return
     fi
 
@@ -423,15 +464,14 @@ function optimize_php() {
             if [ -f "/usr/sbin/phpenmod" ]; then
                 sudo phpenmod opcache
             else
-                install_warning "phpenmod not found."
+                _install_warning "phpenmod not found."
             fi
         fi
     fi
 }
 
-function install_complete() {
-    install_log "Installation completed!"
-
+function _install_complete() {
+    _install_log "Installation completed!"
     if [ "$assume_yes" == 0 ]; then
         # Prompt to reboot if wired ethernet (eth0) is connected.
         # With default_configuration this will create an active AP on restart.
@@ -442,27 +482,29 @@ function install_complete() {
                 echo "Installation reboot aborted."
                 exit 0
             fi
-            sudo shutdown -r now || install_error "Unable to execute shutdown"
+            sudo shutdown -r now || _install_error "Unable to execute shutdown"
         fi
     fi
 }
 
-function install_raspap() {
-    display_welcome
-    config_installation
-    update_system_packages
-    install_dependencies
-    enable_php_lighttpd
-    create_raspap_directories
-    optimize_php
-    check_for_old_configs
-    download_latest_files
-    change_file_ownership
-    create_hostapd_scripts
-    create_lighttpd_scripts
-    move_config_file
-    default_configuration
-    prompt_install_openvpn
-    patch_system_files
-    install_complete
+function _install_raspap() {
+    _display_welcome
+    _config_installation
+    _update_system_packages
+    _install_dependencies
+    _enable_php_lighttpd
+    _create_raspap_directories
+    _optimize_php
+    _check_for_old_configs
+    _download_latest_files
+    _change_file_ownership
+    _create_hostapd_scripts
+    _create_lighttpd_scripts
+    _move_config_file
+    _default_configuration
+    _configure_networking
+    _prompt_install_openvpn
+    _prompt_install_adblock
+    _patch_system_files
+    _install_complete
 }
diff --git a/installers/configauth.sh b/installers/configauth.sh
index 1300f8c3..166c657b 100755
--- a/installers/configauth.sh
+++ b/installers/configauth.sh
@@ -6,9 +6,17 @@
 # @author billz
 # license: GNU General Public License v3.0
 
+# Exit on error
+set -o errexit
+# Exit on error inside functions
+set -o errtrace
+# Turn on traces, disabled by default
+#set -o xtrace
+
 file=$1
 auth=$2
 interface=$3
+readonly rulesv4="/etc/iptables/rules.v4"
 
 if [ "$auth" = 1 ]; then
     echo "Enabling auth-user-pass in OpenVPN client.conf"
@@ -22,26 +30,27 @@ if [ "$auth" = 1 ]; then
     fi
 fi
 
-# Generate iptables entries to place into rc.local file.
-# #RASPAP is for uninstall script
-echo "Checking iptables rules for $interface"
-
-lines=(
-"iptables -t nat -A POSTROUTING -o tun0 -j MASQUERADE #RASPAP"
-"iptables -A FORWARD -i tun0 -o $interface -m state --state RELATED,ESTABLISHED -j ACCEPT #RASPAP"
-"iptables -A FORWARD -i wlan0 -o tun0 -j ACCEPT #RASPAP"
+# Configure NAT and forwarding with iptables
+echo "Checking iptables rules"
+rules=(
+"-A POSTROUTING -o tun0 -j MASQUERADE"
+"-A FORWARD -i tun0 -o ${interface} -m state --state RELATED,ESTABLISHED -j ACCEPT"
+"-A FORWARD -i wlan0 -o tun0 -j ACCEPT"
 )
 
-for line in "${lines[@]}"; do
-    if grep "$line" /etc/rc.local > /dev/null; then
-        echo "$line: Line already added"
+for rule in "${rules[@]}"; do
+    if grep -- "$rule" $rulesv4 > /dev/null; then
+        echo "Rule already exits: ${rule}"
     else
-        sudo sed -i "s/^exit 0$/$line\nexit 0/" /etc/rc.local
-        echo "Adding rule: $line"
+        rule=$(sed -e 's/^\(-A POSTROUTING\)/-t nat \1/' <<< $rule)
+        echo "Adding rule: ${rule}"
+        sudo iptables $rule
+        added=true
     fi
 done
 
-# Force a reload of new settings in /etc/rc.local
-sudo systemctl restart rc-local.service
-sudo systemctl daemon-reload
+if [ "$added" = true ]; then
+    echo "Persisting IP tables rules"
+    sudo iptables-save | sudo tee $rulesv4 > /dev/null
+fi
 
diff --git a/installers/mkcert.sh b/installers/mkcert.sh
index 73487b65..f583e775 100755
--- a/installers/mkcert.sh
+++ b/installers/mkcert.sh
@@ -1,19 +1,31 @@
 #!/bin/bash
 #
 # RaspAP SSL certificate installation functions
-# author: @billz
-# license: GNU General Public License v3.0
+# Author: @billz <billzimmerman@gmail.com>
+# License: GNU General Public License v3.0
+#
+# You are not obligated to bundle the LICENSE file with your RaspAP projects as long
+# as you leave these references intact in the header comments of your source files.
 
+# Exit on error
+set -o errexit
+# Exit on error inside functions
+set -o errtrace
+# Turn on traces, disabled by default
+# set -o xtrace
+
+# Set defaults
 certname=$HOSTNAME."local"
 lighttpd_ssl="/etc/lighttpd/ssl"
 lighttpd_conf="/etc/lighttpd/lighttpd.conf"
 webroot_dir="/var/www/html"
-mkcert_version="1.4.1"
+readonly mkcert_version="1.4.1"
+readonly git_source_url="https://github.com/FiloSottile/mkcert/releases/download/v${mkcert_version}"
 
 ### NOTE: all the below functions are overloadable for system-specific installs
 
-function config_installation() {
-    install_log "Configure a new SSL certificate"
+function _config_installation() {
+    _install_log "Configure a new SSL certificate"
     echo "Current system hostname is $HOSTNAME"
     echo -n "Create an SSL certificate for ${certname}? (Recommended) [y/N]"
     if [ $assume_yes == 0 ]; then
@@ -35,10 +47,10 @@ function config_installation() {
         echo -e
     fi
 
-    install_divider
+    _install_divider
     echo "A new SSL certificate for: ${certname}"
     echo "will be installed to lighttpd SSL directory: ${lighttpd_ssl}"
-    install_divider
+    _install_divider
     echo -n "Complete installation with these values? [y/N]: "
     if [ $assume_yes == 0 ]; then
         read answer < /dev/tty
@@ -52,43 +64,43 @@ function config_installation() {
 }
 
 # Installs pre-built mkcert binary for Arch Linux ARM
-function install_mkcert() {
-    install_log "Fetching mkcert binary"
-    sudo wget -q https://github.com/FiloSottile/mkcert/releases/download/v${mkcert_version}/mkcert-v${mkcert_version}-linux-arm -O /usr/local/bin/mkcert || install_error "Unable to download mkcert"
+function _install_mkcert() {
+    _install_log "Fetching mkcert binary"
+    sudo wget -q ${git_source_url}/mkcert-v${mkcert_version}-linux-arm -O /usr/local/bin/mkcert || _install_error "Unable to download mkcert"
     sudo chmod +x /usr/local/bin/mkcert
 
-    install_log "Installing mkcert"
-    mkcert -install || install_error "Failed to install mkcert"
+    _install_log "Installing mkcert"
+    mkcert -install || _install_error "Failed to install mkcert"
 }
 
 # Generate a certificate for host
-function generate_certificate() {
-    install_log "Generating a new certificate for $certname"
+function _generate_certificate() {
+    _install_log "Generating a new certificate for $certname"
     cd $HOME
-    mkcert $certname "*.${certname}.local" $certname || install_error "Failed to generate certificate for $certname"
+    mkcert $certname "*.${certname}.local" $certname || _install_error "Failed to generate certificate for $certname"
 
-    install_log "Combining private key and certificate"
-    cat $certname+2-key.pem $certname+2.pem > $certname.pem || install_error "Failed to combine key and certificate"
+    _install_log "Combining private key and certificate"
+    cat $certname+2-key.pem $certname+2.pem > $certname.pem || _install_error "Failed to combine key and certificate"
     echo "OK"
 }
 
 # Create a directory for the combined .pem file in lighttpd
-function create_lighttpd_dir() {
-    install_log "Creating SLL directory for lighttpd"
+function _create_lighttpd_dir() {
+    _install_log "Creating SLL directory for lighttpd"
     if [ ! -d "$lighttpd_ssl" ]; then
-	sudo mkdir -p "$lighttpd_ssl" || install_error "Failed to create lighttpd directory"
+	sudo mkdir -p "$lighttpd_ssl" || _install_error "Failed to create lighttpd directory"
     fi
     echo "OK"
 
-    install_log "Setting permissions and moving .pem file"
-    chmod 400 "$HOME/$certname".pem || install_error "Unable to set permissions for .pem file"
-    sudo mv "$HOME/$certname".pem /etc/lighttpd/ssl || install_error "Unable to move .pem file"
+    _install_log "Setting permissions and moving .pem file"
+    chmod 400 "$HOME/$certname".pem || _install_error "Unable to set permissions for .pem file"
+    sudo mv "$HOME/$certname".pem /etc/lighttpd/ssl || _install_error "Unable to move .pem file"
     echo "OK"
 }
 
 # Generate config to enable SSL in lighttpd
-function configure_lighttpd() {
-    install_log "Configuring lighttpd for SSL"
+function _configure_lighttpd() {
+    _install_log "Configuring lighttpd for SSL"
     lines=(
         'server.modules += ("mod_openssl")'
         '$SERVER["socket"] == ":443" {'
@@ -110,22 +122,22 @@ function configure_lighttpd() {
 }
 
 # Copy rootCA.pem to RaspAP web root
-function copy_rootca() {
-    install_log "Copying rootCA.pem to RaspAP web root"
-    sudo cp ${HOME}/.local/share/mkcert/rootCA.pem ${webroot_dir} || install_error "Unable to copy rootCA.pem to ${webroot_dir}"
+function _copy_rootca() {
+    _install_log "Copying rootCA.pem to RaspAP web root"
+    sudo cp ${HOME}/.local/share/mkcert/rootCA.pem ${webroot_dir} || _install_error "Unable to copy rootCA.pem to ${webroot_dir}"
     echo "OK"
 }
 
 # Restart lighttpd service
-function restart_lighttpd() {
-    install_log "Restarting lighttpd service"
-    sudo systemctl restart lighttpd.service || install_error "Unable to restart lighttpd service"
+function _restart_lighttpd() {
+    _install_log "Restarting lighttpd service"
+    sudo systemctl restart lighttpd.service || _install_error "Unable to restart lighttpd service"
     sudo systemctl status lighttpd.service
 }
 
-function install_complete() {
-    install_log "SSL certificate install completed!"
-    install_divider
+function _install_complete() {
+    _install_log "SSL certificate install completed!"
+    _install_divider
     printf '%s\n' \
     "Open a browser and enter the address: http://$certname/rootCA.pem" \
     "Download the root certificate to your client and add it to your system keychain." \
@@ -133,18 +145,18 @@ function install_complete() {
     "Finally, enter the address https://$certname in your browser." \
     "Enjoy an encrypted SSL connection to RaspAP 🔒" \
     "For advanced options, run mkcert -help"
-    install_divider
+    _install_divider
 }
 
-function install_certificate() {
-    display_welcome
-    config_installation
-    install_mkcert
-    generate_certificate
-    create_lighttpd_dir 
-    configure_lighttpd
-    copy_rootca
-    restart_lighttpd
-    install_complete
+function _install_certificate() {
+    _display_welcome
+    _config_installation
+    _install_mkcert
+    _generate_certificate
+    _create_lighttpd_dir
+    _configure_lighttpd
+    _copy_rootca
+    _restart_lighttpd
+    _install_complete
 }
 
diff --git a/installers/raspap.service b/installers/raspap.service
deleted file mode 100644
index 32430b14..00000000
--- a/installers/raspap.service
+++ /dev/null
@@ -1,10 +0,0 @@
-[Unit]
-Description=RaspAP daemon
-After=multi-user.target
-
-[Service]
-Type=idle
-ExecStart=/bin/bash /etc/raspap/hostapd/servicestart.sh --interface uap0 --seconds 3
-
-[Install]
-WantedBy=multi-user.target
diff --git a/installers/raspap.sudoers b/installers/raspap.sudoers
new file mode 100644
index 00000000..517fbdef
--- /dev/null
+++ b/installers/raspap.sudoers
@@ -0,0 +1,40 @@
+www-data ALL=(ALL) NOPASSWD:/sbin/ifdown
+www-data ALL=(ALL) NOPASSWD:/sbin/ifup
+www-data ALL=(ALL) NOPASSWD:/bin/cat /etc/wpa_supplicant/wpa_supplicant.conf
+www-data ALL=(ALL) NOPASSWD:/bin/cat /etc/wpa_supplicant/wpa_supplicant-wlan[0-9].conf
+www-data ALL=(ALL) NOPASSWD:/bin/cp /tmp/wifidata /etc/wpa_supplicant/wpa_supplicant.conf
+www-data ALL=(ALL) NOPASSWD:/bin/cp /tmp/wifidata /etc/wpa_supplicant/wpa_supplicant-wlan[0-9].conf
+www-data ALL=(ALL) NOPASSWD:/sbin/wpa_cli -i wlan[0-9] scan_results
+www-data ALL=(ALL) NOPASSWD:/sbin/wpa_cli -i wlan[0-9] scan
+www-data ALL=(ALL) NOPASSWD:/sbin/wpa_cli -i wlan[0-9] reconfigure
+www-data ALL=(ALL) NOPASSWD:/sbin/wpa_cli -i wlan[0-9] select_network
+www-data ALL=(ALL) NOPASSWD:/bin/cp /tmp/hostapddata /etc/hostapd/hostapd.conf
+www-data ALL=(ALL) NOPASSWD:/bin/systemctl start hostapd.service
+www-data ALL=(ALL) NOPASSWD:/bin/systemctl stop hostapd.service
+www-data ALL=(ALL) NOPASSWD:/bin/systemctl start dnsmasq.service
+www-data ALL=(ALL) NOPASSWD:/bin/systemctl stop dnsmasq.service
+www-data ALL=(ALL) NOPASSWD:/bin/systemctl restart dnsmasq.service
+www-data ALL=(ALL) NOPASSWD:/bin/systemctl start openvpn-client@client
+www-data ALL=(ALL) NOPASSWD:/bin/systemctl enable openvpn-client@client
+www-data ALL=(ALL) NOPASSWD:/bin/systemctl stop openvpn-client@client
+www-data ALL=(ALL) NOPASSWD:/bin/systemctl disable openvpn-client@client
+www-data ALL=(ALL) NOPASSWD:/bin/cp /tmp/ovpnclient.ovpn /etc/openvpn/client/client.conf
+www-data ALL=(ALL) NOPASSWD:/bin/cp /tmp/authdata /etc/openvpn/client/login.conf
+www-data ALL=(ALL) NOPASSWD:/bin/cp /tmp/dnsmasqdata /etc/dnsmasq.d/090_raspap.conf
+www-data ALL=(ALL) NOPASSWD:/bin/cp /tmp/dhcpddata /etc/dhcpcd.conf
+www-data ALL=(ALL) NOPASSWD:/sbin/shutdown -h now
+www-data ALL=(ALL) NOPASSWD:/sbin/reboot
+www-data ALL=(ALL) NOPASSWD:/sbin/ip link set wlan[0-9] down
+www-data ALL=(ALL) NOPASSWD:/sbin/ip link set wlan[0-9] up
+www-data ALL=(ALL) NOPASSWD:/sbin/ip -s a f label wlan[0-9]
+www-data ALL=(ALL) NOPASSWD:/bin/cp /etc/raspap/networking/dhcpcd.conf /etc/dhcpcd.conf
+www-data ALL=(ALL) NOPASSWD:/etc/raspap/hostapd/enablelog.sh
+www-data ALL=(ALL) NOPASSWD:/etc/raspap/hostapd/disablelog.sh
+www-data ALL=(ALL) NOPASSWD:/etc/raspap/hostapd/servicestart.sh
+www-data ALL=(ALL) NOPASSWD:/etc/raspap/lighttpd/configport.sh
+www-data ALL=(ALL) NOPASSWD:/etc/raspap/openvpn/configauth.sh
+www-data ALL=(ALL) NOPASSWD:/bin/chmod o+r /tmp/hostapd.log
+www-data ALL=(ALL) NOPASSWD:/bin/chmod o+r /tmp/dnsmasq.log
+www-data ALL=(ALL) NOPASSWD:/bin/cp /tmp/dnsmasqdata /etc/dnsmasq.d/090_adblock.conf
+www-data ALL=(ALL) NOPASSWD:/etc/raspap/adblock/update_blocklist.sh
+
diff --git a/installers/raspapd.service b/installers/raspapd.service
new file mode 100644
index 00000000..c5738465
--- /dev/null
+++ b/installers/raspapd.service
@@ -0,0 +1,24 @@
+### BEGIN INIT INFO
+# Provides:          raspapd
+# Required-Start:    $remote_fs $syslog
+# Required-Stop:     $remote_fs $syslog
+# Default-Start:     S 2 3 4 5
+# Default-Stop:      0 1 6
+# Short-Description: Start RaspAP daemon at boot time
+# Description:       Enable service provided by daemon
+### END INIT INFO
+# Author: BillZ <billzimmerman@gmail.com>
+
+[Unit]
+Description=RaspAP Service Daemon
+DefaultDependencies=no
+After=multi-user.target
+
+[Service]
+Type=oneshot
+ExecStart=/bin/bash /etc/raspap/hostapd/servicestart.sh --interface uap0 --seconds 3
+RemainAfterExit=no
+
+[Install]
+WantedBy=multi-user.target
+
diff --git a/installers/raspbian.sh b/installers/raspbian.sh
index ea828999..5f45f4bf 100755
--- a/installers/raspbian.sh
+++ b/installers/raspbian.sh
@@ -1,8 +1,8 @@
 #!/bin/bash
 #
 # RaspAP Quick Installer
-# author: @billz
-# license: GNU General Public License v3.0
+# Author: @billz <billzimmerman@gmail.com>
+# License: GNU General Public License v3.0
 #
 # Usage:
 #
@@ -27,13 +27,16 @@
 # https://raw.githubusercontent.com/billz/raspap-webgui/master/installers/common.sh
 # - or -
 # https://raw.githubusercontent.com/billz/raspap-webgui/master/installers/mkcert.sh
+#
+# You are not obligated to bundle the LICENSE file with your RaspAP projects as long
+# as you leave these references intact in the header comments of your source files.
 
 # Set defaults
 repo="billz/raspap-webgui"
 branch="master"
-VERSION=$(curl -s "https://api.github.com/repos/$repo/releases/latest" | grep -Po '"tag_name": "\K.*?(?=")' )
 assume_yes=0
 ovpn_option=1
+readonly RASPAP_LATEST=$(curl -s "https://api.github.com/repos/$repo/releases/latest" | grep -Po '"tag_name": "\K.*?(?=")' )
 
 # Define usage notes
 usage=$(cat << EOF
@@ -59,6 +62,9 @@ while :; do
         ovpn_option="$2"
         shift
         ;;
+        -a|--adblock)
+        install_adblock=1
+        ;;
         -c|--cert|--certificate)
         install_cert=1
         ;;
@@ -75,7 +81,7 @@ while :; do
         exit 1
         ;;
         -v|--version)
-        printf "RaspAP v${VERSION} - simple AP setup and wifi mangement for the RaspberryPi\n"
+        printf "RaspAP v${RASPAP_LATEST} - simple AP setup and wifi mangement for the RaspberryPi\n"
         exit 1
 	;;
         -*|--*)
@@ -93,7 +99,7 @@ done
 UPDATE_URL="https://raw.githubusercontent.com/$repo/$branch/"
 
 # Outputs a welcome message
-function display_welcome() {
+function _display_welcome() {
     raspberry='\033[0;35m'
     green='\033[1;32m'
 
@@ -105,35 +111,35 @@ function display_welcome() {
     echo -e " 88     88 88.  .88       88 88.  .88 88     88   88"
     echo -e " dP     dP  88888P8  88888P  88Y888P  88     88   dP"
     echo -e "                             88"
-    echo -e "                             dP       version ${VERSION}"
+    echo -e "                             dP       version ${RASPAP_LATEST}"
     echo -e "${green}"
     echo -e "The Quick Installer will guide you through a few easy steps\n\n"
 }
 
 # Outputs a RaspAP Install log line
-function install_log() {
+function _install_log() {
     echo -e "\033[1;32mRaspAP Install: $*\033[m"
 }
 
 # Outputs a RaspAP Install Error log line and exits with status code 1
-function install_error() {
+function _install_error() {
     echo -e "\033[1;37;41mRaspAP Install Error: $*\033[m"
     exit 1
 }
 
 # Outputs a RaspAP Warning line
-function install_warning() {
+function _install_warning() {
     echo -e "\033[1;33mWarning: $*\033[m"
 }
 
 # Outputs a RaspAP divider
-function install_divider() {
+function _install_divider() {
     echo -e "\033[1;32m***************************************************************$*\033[m"
 }
 
-function update_system_packages() {
-    install_log "Updating sources"
-    sudo apt-get update || install_error "Unable to update package list"
+function _update_system_packages() {
+    _install_log "Updating sources"
+    sudo apt-get update || _install_error "Unable to update package list"
 }
 
 # Fetch required installer functions
@@ -141,11 +147,11 @@ if [ "${install_cert:-}" = 1 ]; then
     source="mkcert"
     wget -q ${UPDATE_URL}installers/${source}.sh -O /tmp/raspap_${source}.sh
     source /tmp/raspap_${source}.sh && rm -f /tmp/raspap_${source}.sh
-    install_certificate || install_error "Unable to install certificate"
+    _install_certificate || _install_error "Unable to install certificate"
 else
     source="common"
     wget -q ${UPDATE_URL}installers/${source}.sh -O /tmp/raspap_${source}.sh
     source /tmp/raspap_${source}.sh && rm -f /tmp/raspap_${source}.sh
-    install_raspap || install_error "Unable to install RaspAP"
+    _install_raspap || _install_error "Unable to install RaspAP"
 fi
 
diff --git a/installers/servicestart.sh b/installers/servicestart.sh
index 710d2b4b..3e7cbadd 100755
--- a/installers/servicestart.sh
+++ b/installers/servicestart.sh
@@ -1,12 +1,12 @@
 #!/bin/bash
-# When wireless client AP mode is enabled, this script handles starting
+# When wireless client AP or Bridge mode is enabled, this script handles starting
 # up network services in a specific order and timing to avoid race conditions.
 
 PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
-NAME=raspap
+NAME=raspapd
 DESC="Service control for RaspAP"
 CONFIGFILE="/etc/raspap/hostapd.ini"
-DAEMONPATH="/lib/systemd/system/raspap.service"
+DAEMONPATH="/lib/systemd/system/raspapd.service"
 OPENVPNENABLED=$(pidof openvpn | wc -l)
 
 positional=()
@@ -22,21 +22,33 @@ case $key in
     ;;
     -s|--seconds)
     seconds="$2"
-    shift # past argument
-    shift # past value
+    shift
+    shift
+    ;;
+    -a|--action)
+    action="$2"
+    shift
+    shift
     ;;
 esac
 done
 set -- "${positional[@]}"
 
 echo "Stopping network services..."
-systemctl stop openvpn-client@client
+if [ $OPENVPNENABLED -eq 1 ]; then
+    systemctl stop openvpn-client@client
+fi
 systemctl stop systemd-networkd
 systemctl stop hostapd.service
 systemctl stop dnsmasq.service
 systemctl stop dhcpcd.service
 
-if [ -f "$DAEMONPATH" ]; then
+if [ "${action}" = "stop" ]; then
+    echo "Services stopped. Exiting."
+    exit 0
+fi
+
+if [ -f "$DAEMONPATH" ] && [ ! -z "$interface" ]; then
     echo "Changing RaspAP Daemon --interface to $interface"
     sed -i "s/\(--interface \)[[:alnum:]]*/\1$interface/" "$DAEMONPATH"
 fi
@@ -49,6 +61,9 @@ if [ -r "$CONFIGFILE" ]; then
 
     if [ "${config[BridgedEnable]}" = 1 ]; then
         if [ "${interface}" = "br0" ]; then
+            echo "Stopping systemd-networkd"
+            systemctl stop systemd-networkd
+
             echo "Restarting eth0 interface..."
             ip link set down eth0
             ip link set up eth0
@@ -64,14 +79,21 @@ if [ -r "$CONFIGFILE" ]; then
         echo "Disabling systemd-networkd"
         systemctl disable systemd-networkd
 
-        echo "Removing br0 interface..."
-        ip link set down br0
-        ip link del dev br0
+        ip link ls up | grep -q 'br0' &> /dev/null
+        if [ $? == 0 ]; then
+            echo "Removing br0 interface..."
+            ip link set down br0
+            ip link del dev br0
+        fi
 
         if [ "${config[WifiAPEnable]}" = 1 ]; then
             if [ "${interface}" = "uap0" ]; then
-                echo "Removing uap0 interface..."
-                iw dev uap0 del
+
+                ip link ls up | grep -q 'uap0' &> /dev/null
+                if [ $? == 0 ]; then
+                    echo "Removing uap0 interface..."
+                    iw dev uap0 del
+                fi
 
                 echo "Adding uap0 interface to ${config[WifiManaged]}"
                 iw dev ${config[WifiManaged]} interface add uap0 type __ap