A question about Tor and OpenVPN

General Discussion
1

Hello,
I launched a test server with Tor and OpenVPN and configured OpenVPN to use Tor. The Tor configuration is as the following:

VirtualAddrNetwork 10.192.0.0/10
AutomapHostsOnResolve 1
DNSPort 10.8.0.1:53530
TransPort 10.8.0.1:9040

And Tor service is running:

# netstat -tulpen | grep tor
tcp        0      0 10.8.0.1:9040           0.0.0.0:*               LISTEN      0          17809      982/tor             
tcp        0      0 127.0.0.1:9050          0.0.0.0:*               LISTEN      0          17807      982/tor             
udp        0      0 10.8.0.1:53530          0.0.0.0:*                           0          17808      982/tor

I used the following iptables rules:

# export OVPN=tun0
# iptables -A INPUT -i $OVPN -s 10.8.0.0/24 -m state --state NEW -j ACCEPT
# iptables -t nat -A PREROUTING -i $OVPN -p udp --dport 53 -s 10.8.0.0/24 -j DNAT --to-destination 10.8.0.1:53530
# iptables -t nat -A PREROUTING -i $OVPN -p tcp -s 10.8.0.0/24 -j DNAT --to-destination 10.8.0.1:9040
# iptables -t nat -A PREROUTING -i $OVPN -p udp -s 10.8.0.0/24 -j DNAT --to-destination 10.8.0.1:9040

It works. When a client connects to my server via OpenVPN client, then his\her connection tunneled via Tor.

On the real server, I’m using Tor as a proxy server and its Tor configuration is as the following:

SocksPort 172.20.2.54:9050
RunAsDaemon 1
DataDirectory /var/lib/tor

As you see, Tor is listening to 172.20.2.54 IP not 127.0.0.1 IP. Could this cause a problem? I mean, Tor must be listening to 127.0.0.1 for OpenVPN to use it?

Thank you.