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Re: [Openvpn-users] OpenVPN on Virtual Servers

  • Subject: Re: [Openvpn-users] OpenVPN on Virtual Servers
  • From: David Goldsmith <dgoldsmith@xxxxxxxx>
  • Date: Thu, 10 May 2007 15:00:59 -0400

Hash: SHA1

Dennis Muhlestein wrote:
> I have a rather strange problem.  I have a production environment with
> a number of servers that host all our applications on virtual servers
> (Xen).  The physical machines don't run any application software.  I
> installed OpenVPN on one of the Virtual servers.  When connecting to
> the VPN, I can connect to any server in our network except other
> virtual machines that are on the same physical machine as the vpn
> host.  If I ssh into the vpn host, from there I can connect to those
> machines just fine, it's only through the vpn that it doesn't work.
> It looks like it would be some type of firewall issue, but there isn't
> any firewall software running on the machines.
> Does anyone have a suggestion as to where I might look for hints.
> I've watched messages in the openvpn.log but nothing jumps out as a
> possible problem source.
> Thanks
> Dennis

Probably an issue with proxy ARP and the Xen network bridge.

- --
David Goldsmith
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