VPN not 100% functional when using wireless adapter to connect

G

Guest

Hi!

I am having a hell of a time trying to figure this one out.

First the environment:
1. I am using a Linksys RV042 to VPN to my office network.
2. The office network has a Windows 2003 server which acts as file server,
DNS, and Domain Controller. (IP 192.168.1.111)
3. All client PCs are XP SP2.
4. RV042 is running the embedded firewall application and as far as I know
this is the only firewall protecting my office network.
5. All the client PC are running Windows Firewall and Windows Defender.
6. I establish PPTP VPN tunnels (this is the only way I was able to get the
RV042 to assign the correct DNS address to the VPN clients).
7. All computers (server and clients) have the latest Windows updates.
8. The RV042 has the latest firmware available installed.

Now the problem:
There are a couple computers that will not be able to access the office
resources when VPNing using their wireless network adapter. These same
computers will have no problem accessing the office resources when VPNing
using the Ethernet LAN adapter. In both cases (wireless and wired LAN
adaptor) I have no problem establishing the VPN tunnel: using windows VPN
client I connect to the RV042, which will assign a dynamic IP to the computer
and 192.168.1.111 for DNS. As I said, with the Ethernet adapter I will be
able to access all the resources, i.e. exchange server, shared docs, ping
hosts, etc. However, when using the wireless adaptor I will not be able to
access any resource at all even though the computer is assigned a valid IP
address and 192.168.1.111 for DNS.

Things that I've done so far to try to solve this:
1. Uninstalled Windows Defender and turned off Windows Firewall: same
result; I can access office resources only when VPNing using the Ethernet LAN
adaptor.
2. Installed a different wireless adaptor: same result.

I don't know what else to do. Any ideas?

Is there any security configuration that prevents the wireless adaptor from
accessing networks through VPN tunnels?

Any help will be greatly appreciated.

Thanks,
Pablo M.
 

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