VPN networking problem


I have been having a recent problem with my remote users connecting via VPN.
I have a W2K server with a single NIC which accepts VPN connections through a
firewall. There is a static address pool from which incoming users receive an
IP address. Users can connect via VPN, can connect to a Unix box using a
secure telnet client, but cannot connect to Exchange using the Outlook client
(i'm pretty sure Outlook is configured correctly, as the laptop can connect
with no problem when logged onto the network locally). IPCONFIG from the RRAS
server:
Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel 8255x-based PCI Ethernet
Adapt
er (10/100)
Physical Address. . . . . . . . . : 00-B0-D0-68-D3-32
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 10.10.10.1
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 10.10.10.5
DNS Servers . . . . . . . . . . . : 10.10.10.1
Primary WINS Server . . . . . . . : 10.10.10.1

PPP adapter RAS Server (Dial In) Interface:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : WAN (PPP/SLIP) Interface
Physical Address. . . . . . . . . : 00-53-45-00-00-00
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 10.10.10.81
Subnet Mask . . . . . . . . . . . : 255.255.255.255
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . : 127.0.0.1

IPCONFIG from a client which cannot connect to Exchange:
Windows 2000 IP Configuration

Host Name . . . . . . . . . . . . : dhhmbv01
Primary DNS Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Broadcast
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : hsd1.md.comcast.net.
domain.com

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : hsd1.md.comcast.net.
Description . . . . . . . . . . . : 3Com 3C920 Integrated Fast
Ethernet
Controller (3C905C-TX Compatible)
Physical Address. . . . . . . . . : 00-06-5B-48-E8-61
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 69.140.91.227
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 69.140.91.1
DHCP Server . . . . . . . . . . . : 68.87.73.12
DNS Servers . . . . . . . . . . . : 68.87.73.242
68.87.71.226
Lease Obtained. . . . . . . . . . : Friday, December 02, 2005
1:13:56 PM

Lease Expires . . . . . . . . . . : Tuesday, December 06, 2005
1:13:56 P
M

PPP adapter domain:

Connection-specific DNS Suffix . : domain.com
Description . . . . . . . . . . . : WAN (PPP/SLIP) Interface
Physical Address. . . . . . . . . : 00-53-45-00-00-00
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 10.10.10.82
Subnet Mask . . . . . . . . . . . : 255.255.255.255
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . : 10.10.10.1

As you can see, on the RAS server, the subnet mask on the PPP adapter is
different than the subnet mask on the ethernet adapter (which is the correct
subnet mask for the network). Also there is no default gateway assigned to
the PPP adapter.The client seems to be picking up IP settings from the PPP
adapter, and I believe this could be the root of my problem. Two questions:
1) Could this be the cause of the inability to connect to Exchange, while
still allowing a telnet connection to another server?
2) If so, where can I adjust the settings for the PPP adapter to add the
correct subnet mask and default gateway? I have looked in the network
properties and the RRAS properties but cannot seem to find it.
Thanks in advance for any help you can offer.

.

Relevant Pages

  • RE: VPN issue on SBS2003
    ... I understand that you encountered VPN connection issue when you use VPN to ... Internet clients or VPN to external VPN Server from SBS Client computers? ... Configure E-mail and Internet Connection Wizard ... Total GRE packets sent = 1 ...
    (microsoft.public.windows.server.sbs)
  • RE: PPTP VPN connection problems
    ... The problem is that the VPN does not disconnect. ... However after some idle period I can not send packets across the connection. ... A ping to the server would result in "Request timed out". ... If I connect with the VPN client locally to the internet ...
    (microsoft.public.windows.server.sbs)
  • Re: VPN Ports to Open
    ... the VPN connection after you change the firewall before SBS. ... On the server, please stop the Routing and Remote Access service. ... Total GRE packets sent = 1 ...
    (microsoft.public.windows.server.sbs)
  • Re: Windows 2003 VPN Default Gateway Issues
    ... Ethernet adapter Local Area Connection: ... If the VPN server is configured to use a static IP address ... the default gateway on the client is not the problem. ...
    (microsoft.public.windows.server.networking)
  • RE: VPN Connectivity issues through LAN
    ... I understand that you cannot ping SBS after ... you can establish VPN connection from the remote LAN. ... You have to rerun the CEICW to make sure your SBS 2003 server have right ...
    (microsoft.public.windows.server.sbs)
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