RE: [Openvpn-users] Windows 2000 Routing??

[Andreas Iwanowski <namezero@xxxxxxxxx>]

-----Original Message-----
From: Leonard Isham [mailto:leonard.isham@xxxxxxxxx]
Sent: Tuesday, January 11, 2005 8:11 AM
To: Andreas Iwanowski
Cc: openvpn-users@xxxxxxxxxxxxxxxxxxxxx
Subject: Re: [Openvpn-users] Windows 2000 Routing??


On Mon, 10 Jan 2005 13:56:49 -0500, Andreas Iwanowski
<namezero@xxxxxxxxx> wrote:
> -----Original Message-----
> From: Leonard Isham [mailto:leonard.isham@xxxxxxxxx]
> Sent: Monday, January 10, 2005 1:22 PM
> To: Andreas Iwanowski
> Cc: Openvpn Users (E-mail)
> Subject: Re: [Openvpn-users] Windows 2000 Routing??
> 
> On Fri, 7 Jan 2005 23:15:02 -0500, Andreas Iwanowski <namezero@xxxxxxxxx> wrote:
> > Hello community.
> >
> > I have posted this problem a while ago, but have not received an answer that helped.
> >
> > Here is the problem:
> >
> > Network 192.168.250.0/24 <=> VPN Server1 192.168.250.6 / VPN 10.0.0.1 <====> VPN Server2 192.168.251.1 / VPN 10.0.0.2 <=> Network 192.168.251.0/24
> >
> > Both servers are running Windows 2000AS and Routing and remote access.
> > Both servers have static routes.
> > Static route on Server1 is 192.168.251.0 255.255.255.0 over 10.0.0.2
> > Static route on Server2 is 192.168.250.0 255.255.255.0 over 10.0.0.1
> >
> > Everything so far works fine.
> > Clients on both sides have the corresponding VPN server as their default gateway, which redirects internet to the internet router and VPN traffic over the VPN.
> >
> > The internet IP of the first VPN server is dynamic, and it reconnects every 24 hrs.
> > When a client sends data while the VPN is reconnected, the routing breaks.
> > I.e. except for the server itself, no client can communicate over the VPN (ping doesn't work either). Only the server itself can communicate.
> > Restarting VPn or Routing&Remote access does not help; only restaring the entire server machine (pretty annoying)
> >
> > Now, my guess is that something with ARP goes wrong??
> >
> > I'm in dire need for help.
> >
> > -andy
> >
> 
> What do the routing tables look like before and after the problem?
> 
> The routing tables look exactly the same!!!
> The servers themselves are still able to ping hosts in the other subnet!!!
> Readding the route does not help either, neither does restarting the Routing service.
> Only the entire server!!
> 

>Please don't top post.

>OK, both servers can ping all the systems on the other systems subnet.  Correct?

>hmmmm.... Just a thought is there a known issue with RRAS and
>bridging?  Have you checked out MS TechNet?

>More thoughts...

>Is there another router/system that is pointed to the Windows system
>that may be losing the route?

>Are you using RIP?

>Any thoughts on using a TUN interface and drop the bridging?  You are
>already doing routing.

There is no routing issue I know of, and I didn't come up with anything.
I'm not using RIP(what exactly is that?) , and the default gateway does not
lose the route either.
The problem also onl occurs if a client tries to use the route while it is down,
as I have found out.

Please read my previous post as to why it might happen.
I will try this and then post if this is the cause.

-andy

-- 
Leonard Isham, CISSP
Ostendo non ostento.



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