Re: VPN kills Internet connection
- From: "SuperGumby [SBS MVP]" <not@xxxxxxxxxxx>
- Date: Tue, 4 Sep 2007 03:34:46 +1000
there is a reason for this, but I don't know of a simple answer without
checking m'self. So I'm answering to avoid people posting 'red herrings',
and will try to remind m'self by looking into whether this can be changed
easily.
The connection manager setup includes 'use default gateway on remote
network', avoiding what is known as 'split tunneling'. Split tunneling
represents a security risk to the network. Theoretically someone could come
from the internet, through the remote PC, into the LAN via the already
established VPN. People commonly turn on split tunneling (by unchecking 'use
default gateway on remote network') but it's not really a very good thing to
do.
"Richard Johansson, Parnasso" <Richard Johansson,
Parnasso@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:0407A703-D9EE-49AA-A8F0-D1D68BC55D5E@xxxxxxxxxxxxxxxx
When running a SBS 2003 R2 Swedish edition, our company have four
different
offices consisting of one workstation each. The offices want to connect to
the SBS network in order to get access to Exchange and file resources. In
the
previous installation of SBS 2003 (not R2) the clients created a simple
PPTP
VPN-connection in their computers respective. When setting up such a
configuration now, the problem occurs that the name resolution doesn't
seem
to work properly as the clients cannot access the shared file resources
nor
the Exchange server through the VPN connection.
The alternative to using a standard PPTP VPN-connection is to user the
Connection Manager, being supplied through the Remote Web Workplace. When
the
Connection Manager is installed and a connection is being established with
it, the network shares, Outlook and Exchange resources are correctly, but
all
connectivity to other Internet resources is being cut off for the clients
until the SBS Connection is disconnected.
The server has one NIC today, but another is on its way in. May this solve
the issue of not being able to surf the Internet simultaneously to being
connected to the SBS Network?
The server is sitting behind a D-Link DGL-4300 with both TCP port 1723 and
IP Protocol 47 forwarded to its static IP address. The adresses which the
VPN
clients receive when connecting to the VPN are in the same subnet as the
local subnet of the SBS Network, but has not been so historically (in the
previous installation that actually worked).
Please help me to restore the Internet connectivity for my employees.
Yours
Richard Johansson
.
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