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Re: [Openvpn-users] snmp over vpn


  • Subject: Re: [Openvpn-users] snmp over vpn
  • From: "... ..." <rob_xx17@xxxxxxxxx>
  • Date: Wed, 5 Apr 2006 08:41:01 -0700 (PDT)

forgot to mention one more thing. On the VPN router I
have the IP forwarding enabled as in:

/proc/sys/net/ipv4/ip_forward = 1
/proc/sys/net/ipv4/conf/all/ip_forward = 1

The server is running SuSE 9.3. From my understanding
that's how you enable IP forwarding. I think that's
the only thing that I have to do on the
VPNserver/router to make sure that it routs the
packets, right?

--- Jon Bendtsen <jon.bendtsen@xxxxxxxxxx> wrote:

> Den tirsdag 4.apr kl. 21:49 skrev ... ...:
> 
> > I've spoken with a guy that works with the
> equipment
> > that I'm trying to manage through the VPN tunnel.
> He
> > looked at the configuration of that equipment and
> he
> > says that it looks good. He says that it's the
> problem
> > with the VPN not passing the data. He says that it
> > might be a problem with configuring the VPN. Below
> is
> > my server and client config files. Could anyone
> look
> > at it and tell me if I'm missing something. I
> don't
> > have a single firewall on any of the machines on
> the
> > network, so I don't think it's a firewall issue. I
> > tried googling the problem but it looks like I'm
> the
> > only one that's trying to pass SNMP over VPN.
> Thank
> > you...
> 
> Your config files for OpenVPN seems fine. Now start
> using a
> network sniffer and follow the packet path from end
> to end, along
> all possible computers/routers/network interfaces.
> 
> A few things to look for.
> 
> Since the equipment doing the SNMP is most likely
> not
> running openvpn, then i'd start thinking of the
> routing setup.
> 
> On both LAN's, both the client and the server side.
> Make sure that
> the default gateway knows how to route packets to
> the other side.
> it should be sent through the openvpn client/server.
> 
> Also notice that if you on the server side want to
> reach the client lan,
> you have to use an iroute directive to push it to
> the client.
> 
> Maybe you should draw a map of your network setup so
> we can look
> at that and get a better understandig of the
> problem.
> 
> 
> 
> JonB
> 
> 
>
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