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Author VPN blocks local network
wwwc21@gmail.com

2005-09-21, 2:46 am

I have a vpn from my work computer to the main office down the street.
When i connect, i can no longer get to my local network.

How do i set it up so i have access to both networks (vpn and lcoal) at
the same time?

Martin Bodenstedt

2005-09-26, 7:46 am

wwwc21@gmail.com schrieb:

> I have a vpn from my work computer to the main office down the street.
> When i connect, i can no longer get to my local network.


This is by design!

>
> How do i set it up so i have access to both networks (vpn and lcoal) at
> the same time?


You should never have that.

Once your computer has an open VPN connection to your head office only
your computer should be visible from the head office and your head
office should only see your computer.

What You want is called "split tunneling" and is an absolute nono for
security reasons...


--
Martin Bodenstedt

www.landtag-bw.de / www.die-bodenstedts.de
Russell Zager

2005-09-28, 5:54 pm

What if you have 2 network cards? Can you see two networks that way?

Martin Bodenstedt

2005-09-29, 2:48 am

Russell Zager schrieb:
> What if you have 2 network cards? Can you see two networks that way?


Not if the vpn is implemented correctly.

Remember:

the isolation of the pc against your own lan while the tunnel is up is
by design and a crucial security issue.

I as a network administrator have to make absolutely sure that a pc
connecting to my lan from the outside (via vpn) does not work as a
smokescreen for (potentially malicious) computers on that pc's lan and
the only way to achieve this is to modify the PC's routing table in such
a way as to make this pc an end node - no matter what else the pc is
connected to physically...


--
Martin Bodenstedt

www.landtag-bw.de / www.die-bodenstedts.de
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