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That was exactly the information I was looking for. &nbsp;Thanks to you both for the quick replies.
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Great, glad that could help.
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I have a Windows 2003 Server (Domain Controller) with a dual-port NIC. &nbsp;One port is used for the LAN and the other is available. &nbsp;We use a Sonic TZ 170 firewall. &nbsp;We have a router for internet access. &nbsp;One outgoing port goes to our Sonicwall firewall appliance. &nbsp;The other port is just an internet connection without any firewall.<br />
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I was wondering which way is better to set up a VPN:<br />
<br />
1) Use the one port already used for the LAN<br />
<br />
2) Use the second available port. &nbsp;As far as I understand, this port needs to be connected to an internet connection. &nbsp;Do I connect to<br />
a) internet router before our Sonicwall firewall<br />
b) an available port on the Sonicwall box. &nbsp;There are 5 ports, one is used to connect to our LAN switch.<br />
c) the LAN switch
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I have a Windows 2003 Server (Domain Controller) with a dual-port NIC.  One port is used for the LAN and the other is available.  We use a Sonic TZ 170 firewall.  We have a router for internet access.  One outgoing port goes to our Sonicwall firewall appliance.  The other port is just an internet connection without any firewall.

I was wondering which way is better to set up a VPN:

1) Use the one port already used for the LAN

2) Use the second available port.  As far as I understand, this port needs to be connected to an internet connection.  Do I connect to
a) internet router before our Sonicwall firewall
b) an available port on the Sonicwall box.  There are 5 ports, one is used to connect to our LAN switch.
c) the LAN switch

How to connect a Windows 2003 server to the internet for VPN

A virtual private network (VPN) is a network that uses a public telecommunication infrastructure, such as the Internet, to provide remote offices or travelling users access to a central organizational network securely. VPNs encapsulate data transfers using secure cryptographic methods and other security mechanisms to ensure that only authorized users can access the network and that the data cannot be intercepted.