Alla enheter i mitt LAN kan inte nå VPN-server

#!/bin/bash
#
# Change this variable to match your private network.
PRIVATE_NETWORK="192.168.1.0/24"
#
# Change this variable to match your public interface - either eth0 or eth1
PUBLIC_INTERFACE="tun0"

# Set PATH to find iptables
PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/syno/sbin:/usr/syno/bin

# Module list where KERNEL_MODULES_NAT are defined.
IPTABLES_MODULE_LIST="/usr/syno/etc/iptables_modules_list"
source "${IPTABLES_MODULE_LIST}"

# Tool to load kernel modules (modprobe does not work for me)
BIN_SYNOMODULETOOL="/usr/syno/bin/synomoduletool"

# My service name - let's make sure we don't conflict with synology
SERVICE="Skynet_NAT"

# iptable binary
IPTABLES="iptables"

start() {

#clear iptables
iptables -P INPUT ACCEPT
iptables -P FORWARD ACCEPT
iptables -P OUTPUT ACCEPT
iptables -t nat -F
iptables -F
iptables -X

# Log execution time
date

# Make sure packet forwarding is enabled.
# 'sysctl -w net.ipv4.ip_forward=1' does not work for me
echo 1 > /proc/sys/net/ipv4/ip_forward

# Count the number of modules so that we can verify if the module
# insertion was successful. We replace whitespaces with newlines
# and count lines.
MODULE_COUNT=$(
echo "${KERNEL_MODULES_NAT}" |
gawk '{ print gensub(/\s+/, "\n", "g") }' |
wc -l
)

# Load the kernel modules necessary for NAT
"${BIN_SYNOMODULETOOL}" --insmod "${SERVICE}" ${KERNEL_MODULES_NAT}
RV=$?

# $BIN_SYNOMODULETOOL returns the number of loaded modules as return value
[[ "${RV}" == "${MODULE_COUNT}" ]] || {
echo >&2 "Error: Modules were not loaded. The following command failed:"
echo >&2 "${BIN_SYNOMODULETOOL}" --insmod "${SERVICE}" ${KERNEL_MODULES_NAT}
exit 1
}

# Turn on NAT.
"${IPTABLES}" -t nat -A POSTROUTING -s "${PRIVATE_NETWORK}" -j MASQUERADE -o "${PUBLIC_INTERFACE}"
RV=$?
[[ "${RV}" == "0" ]] || {
echo >&2 "Error: MASQUERADE rules could not be added. The following command failed:"
echo >&2 "${IPTABLES}" -t nat -A POSTROUTING -s "${PRIVATE_NETWORK}" -j MASQUERADE -o "${PUBLIC_INTERFACE}"
exit 1
}

# Log current nat table
iptables -L -v -t nat
}

case "$1" in
start)
start
exit
;;
*)
# Help message.
echo "Usage: $0 start"
exit 1
;;
esac