Question

SBS 2008 VPN Issue - Cannot access LAN resources beyond VPN authentication

Asked by: mojopojo

We have a SBS 2008 Server and several remote access clients who require VPN connections while out of the office. I've configured RRA on the SBS 2008 server and used the Windows XP/Vista VPN clients to configure VPN connections to the server.

The VPN clients appear to authenticate just fine and the remote machines register themselves on the network.

BUT after that none of the network shares or resources are accessible - not by NetBIOS name or by IP. I've never had this issue before with and 2K3 or SBS 2K3 servers and XP/Vista clients.

The SonicWall TZ-190 has 1723 and 443 open and pointing to the server. And like I said, authentication and the VPN connection run fine. But they still cannot access the server shares at all.

What am I missing in SBS 2008?

-MP

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Asked On
2009-11-07 at 10:40:27ID24880729
Tags

SBS 2008 VPN

,

Windows VPN

,

VPN Access

Topics

Windows Server 2008

,

Virtual Private Networking (VPN)

Participating Experts
2
Points
500
Comments
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Answers

 

by: technicasolutionsPosted on 2009-11-07 at 10:48:28ID: 25767515

In the RRA window right click you server in teh tree and select properties
On the General Tab make sure both tick boxes are ticked and that LAN and demand-dial routing is selected.

If they already are then look at your Remote Access Policies (also in that tree) and see if any of the policies restrict routing to the LAN

 

by: vAdminPosted on 2009-11-07 at 10:56:36ID: 25767556

Are the remote computers connected to the same network? I mean, are they in the same mask?

 

by: mojopojoPosted on 2009-11-07 at 11:21:23ID: 25767662

All subnet masks are 255.255.255.0.
Nothing configured in RRA to restrict VPN to LAN.

The virtual network connector is a different subnet that the LAN. I'n not sure how it creates the loop-back to allor traffic from that IP scope to access the LAN and how it passes DNS though. That could be the problem.

-MP

 

by: technicasolutionsPosted on 2009-11-07 at 11:23:54ID: 25767668

Is it set to route between subnets?
Are the clients logging in getting IP addresses on the LAN from the DHCP server on the LAN or from a set pool also on the LAN? If not that will be your issue.

 

by: vAdminPosted on 2009-11-07 at 11:29:45ID: 25767684

Hello, you need to make sure that the ip addres assigned to that computer connecting using vpn are similar to those on the lan, example 192.168.1.1 on the lan and 192.168.1.3 on the one connecting from vpn. And that the subnet mask are the same as you said before 255.255.255.0 on both.

 

by: mojopojoPosted on 2009-11-07 at 12:17:54ID: 25767848

It is picking up a contrary IP even after authentiation. Does not look like it is passing DHCP.

LAN (Server side) is 192.168.123.0

Remote VPN is picking up looks like APPIPA: 169.254.69.99 and MAsk of 255.255.255.255

 

by: technicasolutionsPosted on 2009-11-07 at 12:48:35ID: 25767972

Yes that is your issue.
You need to look in the RRA tree again as follows:
right click your server name
properties
IP tab
tick all three boxes you see on that tab and then either select DHCP or add a range of free address to the static pool if that doesn't work.

20120131-EE-VQP-002

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