Posted: Sun Jun 23, 2019 20:46 Post subject: Problems with port forwarding and VPN
Hello,
i just spend a couple of ours in my "project" connecting with my Router: WRT3200ACM (DDWRT Firmware 39825).
The router uses OpenVPN to connect to a VPN-Server.
Now i want to install NextcloudPi. I installed it on a RasperyPi and connect it with LAN to my Router.
I configured it, but i still have problems to connect the router from outside.
I did Port Forwarding like this:
Port from: 80 to 80 192.168.1.125
Port from: 443 to 443 192.168.1.125
But Nextcloudpi always tells me, that the port is closed.
I think its because of the VPN.
I am a beginner in this topic. Maybe there is good solution?
# allow WAN to LAN access
#########################
sleep 10
for i in /proc/sys/net/ipv4/conf/*/rp_filter ; do
echo 0 > $i
done
#
# Delete table 100 and flush any existing rules if they exist.
#
ip route flush table 100
ip route del default table 100
ip rule del fwmark 1 table 100
ip route flush cache
#
# Copy all non-default and non-VPN related routes from the main table into table 100.
# Then configure table 100 to route all traffic out the WAN gateway and assign it mark "1"
#
# NOTE: Here I assume the OpenVPN tunnel is named "tun1".
#
#
ip route show table main | grep -Ev ^default | grep -Ev tun1 | while read ROUTE ; do
ip route add table 100 $ROUTE
done
ip route add default table 100 via $(nvram get wan_gateway)
ip rule add fwmark 1 table 100
ip route flush cache
# Allow WAN to LAN access
iptables -t mangle -F PREROUTING
# SSH Traffic: Bypass VPN
#
# Define the routing policies for the traffic. The rules will be applied in the order that they
# are listed. In the end, packets with MARK set to "0" will pass through the VPN. If MARK is set
# to "1" it will bypass the VPN.
#
iptables -t mangle -A PREROUTING -i br0 -p tcp -s 192.168.1.10 --sport 22 -j MARK --set-mark 1
.