(Nyr#889) Adds Custom DNS Choice.

openvpn-install.sh

@@ -125,7 +125,7 @@ if [[ ! -e /etc/openvpn/server/server.conf ]]; then
  [[ -z "$ip_number" ]] && ip_number="1"
  ip=$(ip -4 addr | grep inet | grep -vE '127(\.[0-9]{1,3}){3}' | cut -d '/' -f 1 | grep -oE '[0-9]{1,3}(\.[0-9]{1,3}){3}' | sed -n "$ip_number"p)
  fi
- # If $ip is a private IP address, the server must be behind NAT
+ # If $ip is a private IP address, the server must be behind NAT
  if echo "$ip" | grep -qE '^(10\.|172\.1[6789]\.|172\.2[0-9]\.|172\.3[01]\.|192\.168)'; then
  echo
  echo "This server is behind NAT. What is the public IPv4 address or hostname?"
@@ -190,11 +190,17 @@ if [[ ! -e /etc/openvpn/server/server.conf ]]; then
  echo " 4) OpenDNS"
  echo " 5) Quad9"
  echo " 6) AdGuard"
+ echo " 7) Custom DNS"
  read -p "DNS server [1]: " dns
- until [[ -z "$dns" || "$dns" =~ ^[1-6]$ ]]; do
+ until [[ -z "$dns" || "$dns" =~ ^[1-7]$ ]]; do
  echo "$dns: invalid selection."
  read -p "DNS server [1]: " dns
  done
+
+ if [[ "$dns" == "7" ]]; then
+ read -p "Enter your custom DNS server: " custom_dns
+ fi
+
  echo
  echo "Enter a name for the first client:"
  read -p "Name [client]: " unsanitized_client
@@ -321,6 +327,9 @@ server 10.8.0.0 255.255.255.0" > /etc/openvpn/server/server.conf
  echo 'push "dhcp-option DNS 94.140.14.14"' >> /etc/openvpn/server/server.conf
  echo 'push "dhcp-option DNS 94.140.15.15"' >> /etc/openvpn/server/server.conf
  ;;
+ 7)
+ echo "push \"dhcp-option DNS $custom_dns\"" >> /etc/openvpn/server/server.conf
+ ;;
  esac
  echo 'push "block-outside-dns"' >> /etc/openvpn/server/server.conf
  echo "keepalive 10 120