integrated bitwarden password manager into pivpn

This commit is contained in:
Akvile 2019-07-23 22:12:35 +02:00
parent 8e3a951524
commit b60a06791d
5 changed files with 206 additions and 50 deletions

View file

@ -21,7 +21,7 @@ PKG_CACHE="/var/lib/apt/lists/"
UPDATE_PKG_CACHE="${PKG_MANAGER} update"
PKG_INSTALL="${PKG_MANAGER} --yes --no-install-recommends install"
PKG_COUNT="${PKG_MANAGER} -s -o Debug::NoLocking=true upgrade | grep -c ^Inst || true"
PIVPN_DEPS=(openvpn git tar wget grep iptables-persistent dnsutils expect whiptail net-tools)
PIVPN_DEPS=(openvpn git tar wget grep iptables-persistent dnsutils expect whiptail net-tools grepcidr jq)
### ###
pivpnGitUrl="https://github.com/pivpn/pivpn.git"
@ -92,18 +92,19 @@ distro_check() {
source /etc/os-release
PLAT=$(awk '{print $1}' <<< "$NAME")
VER="$VERSION_ID"
declare -A VER_MAP=(["9"]="stretch" ["8"]="jessie" ["18.04"]="bionic" ["16.04"]="xenial" ["14.04"]="trusty")
declare -A VER_MAP=(["10"]="buster" ["9"]="stretch" ["8"]="jessie" ["18.04"]="bionic" ["16.04"]="xenial" ["14.04"]="trusty")
OSCN=${VER_MAP["${VER}"]}
fi
if [[ ${OSCN} != "bionic" ]]; then
PIVPN_DEPS+=(dhcpcd5)
fi
case ${PLAT} in
Ubuntu|Raspbian|Debian|Devuan)
case ${OSCN} in
trusty|xenial|jessie|stretch)
trusty|xenial|jessie|stretch|buster)
;;
*)
maybeOS_Support
@ -474,11 +475,21 @@ notify_package_updates_available() {
fi
}
install_bitwarden() {
# Install Bitwarden through NPM - this is the preferred installation method since NPM makes it easy to update the package
apt-get install -y nodejs npm
npm install -g @bitwarden/cli
}
install_dependent_packages() {
# Install packages passed in via argument array
# No spinner - conflicts with set -e
declare -a argArray1=("${!1}")
if [[ ${OSCN} == "buster" ]]; then
$SUDO update-alternatives --set iptables /usr/sbin/iptables-legacy
$SUDO update-alternatives --set ip6tables /usr/sbin/ip6tables-legacy
fi
echo iptables-persistent iptables-persistent/autosave_v4 boolean true | $SUDO debconf-set-selections
echo iptables-persistent iptables-persistent/autosave_v6 boolean false | $SUDO debconf-set-selections
@ -528,7 +539,7 @@ getGitFiles() {
echo ":::"
echo "::: Checking for existing base files..."
if is_repo "${1}"; then
update_repo "${1}"
update_repo "${1}" "${2}"
else
make_repo "${1}" "${2}"
fi
@ -561,6 +572,9 @@ update_repo() {
# Pull the latest commits
echo -n "::: Updating repo in $1..."
$SUDO rm -rf "${1}"
# Go back to /etc otherwhise git will complain when the current working directory has
# just been deleted (/etc/.pivpn).
cd /etc
$SUDO git clone -q --depth 1 --no-single-branch "${2}" "${1}" > /dev/null & spinner $!
cd "${1}" || exit 1
if [ -z "${TESTING+x}" ]; then
@ -664,7 +678,7 @@ setClientDNS() {
do
strInvalid="Invalid"
if OVPNDNS=$(whiptail --backtitle "Specify Upstream DNS Provider(s)" --inputbox "Enter your desired upstream DNS provider(s), seperated by a comma.\n\nFor example '8.8.8.8, 8.8.4.4'" ${r} ${c} "" 3>&1 1>&2 2>&3)
if OVPNDNS=$(whiptail --backtitle "Specify Upstream DNS Provider(s)" --inputbox "Enter your desired upstream DNS provider(s), separated by a comma.\n\nFor example '8.8.8.8, 8.8.4.4'" ${r} ${c} "" 3>&1 1>&2 2>&3)
then
OVPNDNS1=$(echo "$OVPNDNS" | sed 's/[, \t]\+/,/g' | awk -F, '{print$1}')
OVPNDNS2=$(echo "$OVPNDNS" | sed 's/[, \t]\+/,/g' | awk -F, '{print$2}')
@ -749,11 +763,13 @@ confOpenVPN() {
NEW_UUID=$(cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 16 | head -n 1)
SERVER_NAME="server_${NEW_UUID}"
declare -A ECDSA_MAP=(["256"]="prime256v1" ["384"]="secp384r1" ["521"]="secp521r1")
if [[ ${useUpdateVars} == false ]]; then
# Ask user for desired level of encryption
if [[ ${useUpdateVars} == false ]]; then
if [[ ${PLAT} == "Raspbian" ]] && [[ ${OSCN} != "stretch" ]]; then
if [[ ${PLAT} == "Raspbian" ]] && [[ ${OSCN} != "stretch" ]] && [[ ${OSCN} != "buster" ]]; then
APPLY_TWO_POINT_FOUR=false
else
if (whiptail --backtitle "Setup OpenVPN" --title "Installation mode" --yesno "OpenVPN 2.4 brings support for stronger authentication and key exchange using Elliptic Curves, along with encrypted control channel.\n\nIf your clients do run OpenVPN 2.4 or later you can enable these features, otherwise choose 'No' for best compatibility.\n\nNOTE: Current mobile app, that is OpenVPN connect, is supported." ${r} ${c}); then
@ -781,7 +797,7 @@ confOpenVPN() {
declare -A ECDSA_MAP=(["256"]="prime256v1" ["384"]="secp384r1" ["521"]="secp521r1")
ENCRYPT=$(whiptail --backtitle "Setup OpenVPN" --title "ECDSA certificate size" --radiolist \
"Choose the desired size of your certificate (press space to select):\n This is an certificate that will be generated on your system. The larger the certificate, the more time this will take. For most applications, it is recommended to use 256 bits. You can increase the number of bits if you care about, however, consider that 256 bits are already as secure as 3072 bit RSA." ${r} ${c} 3 \
"Choose the desired size of your certificate (press space to select):\n This is a certificate that will be generated on your system. The larger the certificate, the more time this will take. For most applications, it is recommended to use 256 bits. You can increase the number of bits if you care about, however, consider that 256 bits are already as secure as 3072 bit RSA." ${r} ${c} 3 \
"256" "Use a 256-bit certificate (recommended level)" ON \
"384" "Use a 384-bit certificate" OFF \
"521" "Use a 521-bit certificate (paranoid level)" OFF 3>&1 1>&2 2>&3)
@ -847,7 +863,7 @@ EOF
fi
# Build the server
${SUDOE} ./easyrsa build-server-full ${SERVER_NAME} nopass
EASYRSA_CERT_EXPIRE=3650 ${SUDOE} ./easyrsa build-server-full ${SERVER_NAME} nopass
if [[ ${useUpdateVars} == false ]]; then
if [[ ${APPLY_TWO_POINT_FOUR} == false ]]; then
@ -974,7 +990,43 @@ confNetwork() {
# else configure iptables
if [[ $noUFW -eq 1 ]]; then
echo 1 > /tmp/noUFW
# Now some checks to detect which rules we need to add. On a newly installed system all policies
# should be ACCEPT, so the only required rule would be the MASQUERADE one.
$SUDO iptables -t nat -I POSTROUTING -s 10.8.0.0/24 -o "$IPv4dev" -j MASQUERADE
# Count how many rules are in the INPUT and FORWARD chain. When parsing input from
# iptables -S, '^-P' skips the policies and 'ufw-' skips ufw chains (in case ufw was found
# installed but not enabled).
# Grep returns non 0 exit code where there are no matches, however that would make the script exit,
# for this reasons we use '|| true' to force exit code 0
INPUT_RULES_COUNT="$($SUDO iptables -S INPUT | grep -vcE '(^-P|ufw-)' || true)"
FORWARD_RULES_COUNT="$($SUDO iptables -S FORWARD | grep -vcE '(^-P|ufw-)' || true)"
INPUT_POLICY="$($SUDO iptables -S INPUT | grep '^-P' | awk '{print $3}')"
FORWARD_POLICY="$($SUDO iptables -S FORWARD | grep '^-P' | awk '{print $3}')"
# If rules count is not zero, we assume we need to explicitly allow traffic. Same conclusion if
# there are no rules and the policy is not ACCEPT. Note that rules are being added to the top of the
# chain (using -I).
if [ "$INPUT_RULES_COUNT" -ne 0 ] || [ "$INPUT_POLICY" != "ACCEPT" ]; then
$SUDO iptables -I INPUT 1 -i "$IPv4dev" -p "$PROTO" --dport "$PORT" -j ACCEPT
INPUT_CHAIN_EDITED=1
else
INPUT_CHAIN_EDITED=0
fi
if [ "$FORWARD_RULES_COUNT" -ne 0 ] || [ "$FORWARD_POLICY" != "ACCEPT" ]; then
$SUDO iptables -I FORWARD 1 -d 10.8.0.0/24 -i "$IPv4dev" -o tun0 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
$SUDO iptables -I FORWARD 2 -s 10.8.0.0/24 -i tun0 -o "$IPv4dev" -j ACCEPT
FORWARD_CHAIN_EDITED=1
else
FORWARD_CHAIN_EDITED=0
fi
case ${PLAT} in
Ubuntu|Debian|Devuan)
$SUDO iptables-save | $SUDO tee /etc/iptables/rules.v4 > /dev/null
@ -987,7 +1039,12 @@ confNetwork() {
echo 0 > /tmp/noUFW
fi
echo "$INPUT_CHAIN_EDITED" > /tmp/INPUT_CHAIN_EDITED
echo "$FORWARD_CHAIN_EDITED" > /tmp/FORWARD_CHAIN_EDITED
$SUDO cp /tmp/noUFW /etc/pivpn/NO_UFW
$SUDO cp /tmp/INPUT_CHAIN_EDITED /etc/pivpn/INPUT_CHAIN_EDITED
$SUDO cp /tmp/FORWARD_CHAIN_EDITED /etc/pivpn/FORWARD_CHAIN_EDITED
}
confOVPN() {
@ -1294,6 +1351,9 @@ main() {
# Notify user of package availability
notify_package_updates_available
# Install packages for Bitwarden
install_bitwarden
# Install packages used by this installation script
install_dependent_packages PIVPN_DEPS[@]

2
pivpn
View file

@ -58,6 +58,7 @@ function helpFunc {
echo ":::"
echo "::: Commands:"
echo "::: -a, add [nopass] Create a client ovpn profile, optional nopass"
echo "::: -b,--bitwarden Create and save a client through Bitwarden"
echo "::: -c, clients List any connected clients to the server"
echo "::: -d, debug Start a debugging session if having trouble"
echo "::: -l, list List all valid and revoked certificates"
@ -74,6 +75,7 @@ fi
# Handle redirecting to specific functions based on arguments
case "$1" in
"-a" | "add" ) makeOVPNFunc "$@";;
"-b" | "bitwarden" ) makeOVPNFunc "$@";;
"-c" | "clients" ) listClientsFunc;;
"-d" | "debug" ) debugFunc;;
"-l" | "list" ) listOVPNFunc;;

View file

@ -13,11 +13,12 @@ INSTALL_USER=$(cat /etc/pivpn/INSTALL_USER)
helpFunc() {
echo "::: Create a client ovpn profile, optional nopass"
echo ":::"
echo "::: Usage: pivpn <-a|add> [-n|--name <arg>] [-p|--password <arg>]|[nopass] [-d|--days <number>] [-h|--help]"
echo "::: Usage: pivpn <-a|add> [-b|--bitwarden] [-n|--name <arg>] [-p|--password <arg>]|[nopass] [-d|--days <number>] [-h|--help]"
echo ":::"
echo "::: Commands:"
echo "::: [none] Interactive mode"
echo "::: nopass Create a client without a password"
echo "::: -b,--bitwarden Create and save a client through Bitwarden"
echo "::: -d,--days Expire the certificate after specified number of days (default: 1080)"
echo "::: -n,--name Name for the Client (default: '"$(hostname)"')"
echo "::: -p,--password Password for the Client (no default)"
@ -66,6 +67,9 @@ do
nopass)
NO_PASS="1"
;;
-b|--bitwarden)
BITWARDEN="2"
;;
*)
echo "Error: Got an unexpected argument '$1'"
helpFunc
@ -91,6 +95,52 @@ EOF
}
function useBitwarden() {
# login and unlock vault
printf "****Bitwarden Login****"
printf "\n"
SESSION_KEY=`bw login --raw`
export BW_SESSION=$SESSION_KEY
printf "Successfully Logged in!"
printf "\n"
# ask user for username
printf "Enter the username: "
read -r NAME
# check name
until [[ "$NAME" =~ ^[a-zA-Z0-9.@_-]+$ && ${NAME::1} != "." && ${NAME::1} != "-" ]]
do
echo "Name can only contain alphanumeric characters and these characters (.-@_). The name also cannot start with a dot (.) or a dash (-). Please try again."
# ask user for username again
printf "Enter the username: "
read -r NAME
done
# ask user for length of password
printf "Please enter the length of characters you want your password to be (minimum 12): "
read -r LENGTH
# check length
until [[ "$LENGTH" -gt 11 && "$LENGTH" -lt 129 ]]
do
echo "Password must be between from 12 to 128 characters, please try again."
# ask user for length of password
printf "Enter the length of characters you want your password to be (minimum 12): "
read -r LENGTH
done
printf "Creating a PiVPN item for your vault..."
printf "\n"
# create a new item for your PiVPN Password
PASSWD=`bw generate -usln --length $LENGTH`
bw get template item | jq '.login.type = "1"'| jq '.name = "PiVPN"' | jq -r --arg NAME "$NAME" '.login.username = $NAME' | jq -r --arg PASSWD "$PASSWD" '.login.password = $PASSWD' | bw encode | bw create item
bw logout
}
function keyPASS() {
if [[ -z "${PASSWD}" ]]; then
@ -137,6 +187,11 @@ EOF
}
# bitWarden first
if [[ "${BITWARDEN}" =~ "2" ]]; then
useBitwarden
fi
if [ -z "${NAME}" ]; then
printf "Enter a Name for the Client: "
read -r NAME
@ -147,7 +202,7 @@ if [[ ${NAME::1} == "." ]] || [[ ${NAME::1} == "-" ]]; then
exit 1
fi
if [[ "${NAME}" =~ [^a-zA-Z0-9\.\-\@\_] ]]; then
if [[ "${NAME}" =~ [^a-zA-Z0-9.@_-] ]]; then
echo "Name can only contain alphanumeric characters and these characters (.-@_)."
exit 1
fi

View file

@ -13,8 +13,9 @@ echo -e "::::\t\t\e[4mLatest commit\e[0m\t\t ::::"
git --git-dir /etc/.pivpn/.git log -n 1
printf "=============================================\n"
echo -e "::::\t \e[4mInstallation settings\e[0m \t ::::"
# Use the wildcard so setupVars.conf.update.bak from the previous install is not shown
for filename in /etc/pivpn/*; do
if [ "$filename" != "/etc/pivpn/setupVars.conf" ]; then
if [[ "$filename" != "/etc/pivpn/setupVars.conf"* ]]; then
echo "$filename -> $(cat "$filename")"
fi
done
@ -56,11 +57,39 @@ if [ "$(cat /etc/pivpn/NO_UFW)" -eq 1 ]; then
iptables -t nat -F
iptables -t nat -I POSTROUTING -s 10.8.0.0/24 -o "${IPv4dev}" -j MASQUERADE
iptables-save > /etc/iptables/rules.v4
iptables-restore < /etc/iptables/rules.v4
echo "Done"
fi
fi
if [ "$(cat /etc/pivpn/INPUT_CHAIN_EDITED)" -eq 1 ]; then
if iptables -C INPUT -i "$IPv4dev" -p "$PROTO" --dport "$PORT" -j ACCEPT &> /dev/null; then
echo ":: [OK] Iptables INPUT rule set"
else
ERR=1
read -r -p ":: [ERR] Iptables INPUT rule is not set, attempt fix now? [Y/n] " REPLY
if [[ ${REPLY} =~ ^[Yy]$ ]]; then
iptables -I INPUT 1 -i "$IPv4dev" -p "$PROTO" --dport "$PORT" -j ACCEPT
iptables-save > /etc/iptables/rules.v4
echo "Done"
fi
fi
fi
if [ "$(cat /etc/pivpn/FORWARD_CHAIN_EDITED)" -eq 1 ]; then
if iptables -C FORWARD -s 10.8.0.0/24 -i tun0 -o "$IPv4dev" -j ACCEPT &> /dev/null; then
echo ":: [OK] Iptables FORWARD rule set"
else
ERR=1
read -r -p ":: [ERR] Iptables FORWARD rule is not set, attempt fix now? [Y/n] " REPLY
if [[ ${REPLY} =~ ^[Yy]$ ]]; then
iptables -I FORWARD 1 -d 10.8.0.0/24 -i "$IPv4dev" -o tun0 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
iptables -I FORWARD 2 -s 10.8.0.0/24 -i tun0 -o "$IPv4dev" -j ACCEPT
iptables-save > /etc/iptables/rules.v4
echo "Done"
fi
fi
fi
else
if LANG="en_US.UTF-8" ufw status | grep -qw 'active'; then
@ -151,7 +180,17 @@ fi
printf "=============================================\n"
echo -e ":::: \e[4mSnippet of the server log\e[0m ::::"
tail -20 /var/log/openvpn.log
tail -20 /var/log/openvpn.log > /tmp/snippet
# Regular expession taken from https://superuser.com/a/202835, it will match invalid IPs
# like 123.456.789.012 but it's fine because the log only contains valid ones.
declare -a IPS_TO_HIDE=($(grepcidr -v 10.0.0.0/8,172.16.0.0/12,192.168.0.0/16 /tmp/snippet | grep -oE '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}' | uniq))
for IP in "${IPS_TO_HIDE[@]}"; do
sed -i "s/$IP/REDACTED/g" /tmp/snippet
done
cat /tmp/snippet
rm /tmp/snippet
printf "=============================================\n"
echo -e "::::\t\t\e[4mDebug complete\e[0m\t\t ::::"

View file

@ -1,27 +1,14 @@
#!/usr/bin/env bash
# PiVPN: Uninstall Script
# Must be root to uninstall
if [[ $EUID -eq 0 ]];then
echo "::: You are root."
else
echo "::: Sudo will be used for the uninstall."
# Check if it is actually installed
# If it isn't, exit because the unnstall cannot complete
if [[ $(dpkg-query -s sudo) ]];then
export SUDO="sudo"
else
echo "::: Please install sudo or run this as root."
exit 1
fi
fi
INSTALL_USER=$(cat /etc/pivpn/INSTALL_USER)
PLAT=$(cat /etc/pivpn/DET_PLATFORM)
NO_UFW=$(cat /etc/pivpn/NO_UFW)
PORT=$(cat /etc/pivpn/INSTALL_PORT)
PROTO=$(cat /etc/pivpn/INSTALL_PROTO)
IPv4dev="$(cat /etc/pivpn/pivpnINTERFACE)"
INPUT_CHAIN_EDITED="$(cat /etc/pivpn/INPUT_CHAIN_EDITED)"
FORWARD_CHAIN_EDITED="$(cat /etc/pivpn/FORWARD_CHAIN_EDITED)"
# Find the rows and columns. Will default to 80x24 if it can not be detected.
screen_size=$(stty size 2>/dev/null || echo 24 80)
@ -59,7 +46,7 @@ echo ":::"
while true; do
read -rp "::: Do you wish to remove $i from your system? [y/n]: " yn
case $yn in
[Yy]* ) printf ":::\tRemoving %s..." "$i"; $SUDO apt-get -y remove --purge "$i" &> /dev/null & spinner $!; printf "done!\n";
[Yy]* ) printf ":::\tRemoving %s..." "$i"; apt-get -y remove --purge "$i" &> /dev/null & spinner $!; printf "done!\n";
if [ "$i" == "openvpn" ]; then UINST_OVPN=1 ; fi
if [ "$i" == "unattended-upgrades" ]; then UINST_UNATTUPG=1 ; fi
break;;
@ -74,44 +61,57 @@ echo ":::"
# Take care of any additional package cleaning
printf "::: Auto removing remaining dependencies..."
$SUDO apt-get -y autoremove &> /dev/null & spinner $!; printf "done!\n";
apt-get -y autoremove &> /dev/null & spinner $!; printf "done!\n";
printf "::: Auto cleaning remaining dependencies..."
$SUDO apt-get -y autoclean &> /dev/null & spinner $!; printf "done!\n";
apt-get -y autoclean &> /dev/null & spinner $!; printf "done!\n";
echo ":::"
# Removing pivpn files
echo "::: Removing pivpn system files..."
$SUDO rm -rf /opt/pivpn &> /dev/null
$SUDO rm -rf /etc/.pivpn &> /dev/null
$SUDO rm -rf /home/$INSTALL_USER/ovpns &> /dev/null
rm -rf /opt/pivpn &> /dev/null
rm -rf /etc/.pivpn &> /dev/null
rm -rf /home/$INSTALL_USER/ovpns &> /dev/null
$SUDO rm -rf /var/log/*pivpn* &> /dev/null
$SUDO rm -rf /var/log/*openvpn* &> /dev/null
rm -rf /var/log/*pivpn* &> /dev/null
rm -rf /var/log/*openvpn* &> /dev/null
if [[ $UINST_OVPN = 1 ]]; then
$SUDO rm -rf /etc/openvpn &> /dev/null
rm -rf /etc/openvpn &> /dev/null
if [[ $PLAT == "Ubuntu" || $PLAT == "Debian" ]]; then
printf "::: Removing openvpn apt source..."
$SUDO rm -rf /etc/apt/sources.list.d/swupdate.openvpn.net.list &> /dev/null
$SUDO apt-get -qq update & spinner $!; printf "done!\n";
rm -rf /etc/apt/sources.list.d/swupdate.openvpn.net.list &> /dev/null
apt-get -qq update & spinner $!; printf "done!\n";
fi
fi
if [[ $UINST_UNATTUPG = 1 ]]; then
$SUDO rm -rf /var/log/unattended-upgrades
$SUDO rm -rf /etc/apt/apt.conf.d/*periodic
rm -rf /var/log/unattended-upgrades
rm -rf /etc/apt/apt.conf.d/*periodic
fi
$SUDO rm -rf /etc/pivpn &> /dev/null
$SUDO rm /usr/local/bin/pivpn &> /dev/null
$SUDO rm /etc/bash_completion.d/pivpn
rm -rf /etc/pivpn &> /dev/null
rm /usr/local/bin/pivpn &> /dev/null
rm /etc/bash_completion.d/pivpn
# Disable IPv4 forwarding
sed -i '/net.ipv4.ip_forward=1/c\#net.ipv4.ip_forward=1' /etc/sysctl.conf
sysctl -p
if [[ $NO_UFW -eq 0 ]]; then
$SUDO sed -z "s/*nat\n:POSTROUTING ACCEPT \[0:0\]\n-I POSTROUTING -s 10.8.0.0\/24 -o $IPv4dev -j MASQUERADE\nCOMMIT\n\n//" -i /etc/ufw/before.rules
$SUDO ufw delete allow "$PORT"/"$PROTO" >/dev/null
$SUDO ufw route delete allow in on tun0 from 10.8.0.0/24 out on "$IPv4dev" to any >/dev/null
$SUDO ufw reload >/dev/null
sed -z "s/*nat\n:POSTROUTING ACCEPT \[0:0\]\n-I POSTROUTING -s 10.8.0.0\/24 -o $IPv4dev -j MASQUERADE\nCOMMIT\n\n//" -i /etc/ufw/before.rules
ufw delete allow "$PORT"/"$PROTO" >/dev/null
ufw route delete allow in on tun0 from 10.8.0.0/24 out on "$IPv4dev" to any >/dev/null
ufw reload >/dev/null
else
iptables -t nat -D POSTROUTING -s 10.8.0.0/24 -o "${IPv4dev}" -j MASQUERADE
if [ "$INPUT_CHAIN_EDITED" -eq 1 ]; then
iptables -D INPUT -i "$IPv4dev" -p "$PROTO" --dport "$PORT" -j ACCEPT
fi
if [ "$FORWARD_CHAIN_EDITED" -eq 1 ]; then
iptables -D FORWARD -d 10.8.0.0/24 -i "$IPv4dev" -o tun0 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
iptables -D FORWARD -s 10.8.0.0/24 -i tun0 -o "$IPv4dev" -j ACCEPT
fi
iptables-save > /etc/iptables/rules.v4
fi
echo ":::"