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From: "Daniel L. Miller" <dmiller@amfes.com>
To: lartc@vger.kernel.org
Subject: [LARTC] OpenVPN routing
Date: Mon, 10 Sep 2007 06:36:18 +0000	[thread overview]
Message-ID: <46E4E5E2.2070703@amfes.com> (raw)

Hi!

I'm trying to create a routed VPN using OpenVPN - and having trouble 
with the routing concepts involved.  Let me see if I can properly 
describe my current topology:

Server -
LAN, with both local workstations and remote bridged workstations on the
    192.168.0.0/24 network (this works without reservation).
    Server located at 192.168.0.71, 192.168.0.72, 192.168.0.222, and few 
others.
Routed VPN, 172.27.0.0/16 network.  Server is located at 172.27.0.1.
    Server can talk to clients, and clients can talk to server.

My 1st goal is to allow selected server-side LAN workstations to reach 
the routed VPN workstations.  The LAN should be invisible to the routed VPN.

My 2nd goal is to allow selected server-side LAN workstations to reach 
networks server by routed VPN workstations as gateways [this involves 
OpenVPN more, I believe].  The LAN should still be invisible to the 
routed VPN.

My server routing table is:
172.27.0.2 dev tun0  proto kernel  scope link  src 172.27.0.1
192.168.20.0/24 dev vmnet8  proto kernel  scope link  src 192.168.20.1
10.4.1.0/24 via 172.27.0.2 dev tun0
192.168.0.0/24 dev eth0  proto kernel  scope link  src 192.168.0.71
192.168.0.0/24 dev br1  proto kernel  scope link  src 192.168.0.72
192.168.30.0/24 dev vmnet1  proto kernel  scope link  src 192.168.30.1
172.27.0.0/16 via 172.27.0.2 dev tun0
default via 192.168.0.1 dev eth0

IP forwarding is enabled on all interfaces, and iptables (by way of 
firehol) has rules to allow all forwarding between all interfaces.

If I create a 172.27.0.0/16 route on a LAN workstation, I can ping the 
server at 172.27.0.1.  But I cannot reach any VPN workstation.  At one 
time, by playing with some NAT rules, I was able to - but it didn't seem 
right.

What am I missing?

Daniel
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             reply	other threads:[~2007-09-10  6:36 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-09-10  6:36 Daniel L. Miller [this message]
2007-09-10  9:05 ` [LARTC] OpenVPN routing Alex Samad
2007-09-10 20:40 ` Daniel L. Miller
2007-09-10 22:03 ` Alex Samad
2007-09-10 22:48 ` Daniel L. Miller
2007-09-11  2:14 ` Alex Samad

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