dima4855
Greetings,
Have a small network problem which may have to do with iptables, openvpn and routing.
Linux Server A (192.168.10.1, external ip:66.145.458.xxx) is the gateway running openvpn server (accepting connections from outside world and firewall).
Linux Server B (192.168.10.9, 192.168.3.42) is a data server running openvpn client (essentially creating a site-to-site vpn) connection to a server outside the network.
Linux Server C in a different location that server B creates the tunnel to (192.168.3.1, external ip: 75.188.18.xxx)
Windows Client machines (192.168.10.xxx) whose gateway is Server A (192.168.10.1).
Problem:
Client machines are not able to ping or connect to server C.
Troubleshooting:
From server B I can ping Server C 192.168.3.1, however I cannot ping 192.168.3.1 from server a, thus I thought the problem is the route. Thus, I added the following route to server A:
route add -host 192.168.3.0 netmask 255.255.255.0 gw 192.168.10.9
This allowed me to now ping 192.168.3.42 from server A, but still is not allowing me to ping 192.168.3.1, so am I missing a route or does it simply not know to route the traffic through 192.168.3.42?
The odd thing is when I run traceroute to 192.168.3.1 I do not see it going to 192.168.10.9 or 192.168.3.42, it does not go anywhere.
I am sure it is something simple, but not sure if it's a openvpn, route or iptables problem.
We are going to be changing the gateway on one of the client machines tomorrow from server a to server b and we will see if anything changes.
Thanks for all your help in advance, I have not used openvpn or iptables in years and not an expert on iptables (at all).
