?
Solved

Cannot access any drives after connecting through VPN

Posted on 2006-05-17
11
Medium Priority
?
970 Views
Last Modified: 2008-03-17
hi
i have made my win2k serevr as my VPN server so that i can connect from my office.

i can make a sucessful VPN connection but i cannot access any drives ( like c,d) on my home computer.

The computer which i made as a VPN server is a part of a domain, and i have a proxy server installed on my domain controller.

any help please
kiran

0
Comment
Question by:kiranvvkk
  • 6
  • 5
11 Comments
 
LVL 78

Expert Comment

by:Rob Williams
ID: 16707453
Assuming you are successfully connected the problem is likely you cannot browse or connect using the computer names. Computer (NetBIOS) names are not as a rule, broadcast over a VPN. The simplest way around this is to connect using the IP address. The computers by the way will need a static/fixed IP so that they do not change unexpectedly on you.

Try the following:
Use the IP address (of the computer you are connecting to) when connecting to devices such as;   \\123.123.123.123\ShareName   or map a drive at a  command prompt using  
       Net  Use  U:  \\123.123.123.123\ShareName
or    Net  Use  U:  \\123.123.123.123\D$

2) An other option is to use the LMHosts file which creates a table of IP's and computer names. LMHosts is located in the Windows directory under c:\Windows (or WINNT)\System32\Drivers\Etc\LMHosts.sam , instructions are included within the file. Any line starting with # is just a comment and is ignored. Open the file with Notepad and add entries for your computers as below;
192.168.0.101      CompName       #PRE
Hit enter when each line is complete (important), then save the file without a file extension. To be sure there is no extension ,when saving enclose in quotations like "LMHosts". Now when you try to connect to a computer name it should find it as it will search the LMHosts file for the record before connecting.
More details regarding LMHosts file:
http://www.microsoft.com/resources/documentation/Windows/2000/server/reskit/en-us/Default.asp?url=/resources/documentation/windows/2000/server/reskit/en-us/cnet/cnfd_lmh_QXQQ.asp
0
 
LVL 1

Author Comment

by:kiranvvkk
ID: 16713538
HI ron

Thanks for your reply.

I can sucessfully ,make a VPN connection.

I tried both the ways to connect, But iam getting this error

"System error 1311 : Currently there are no logon servers available to service the logon."

kiran
0
 
LVL 78

Expert Comment

by:Rob Williams
ID: 16717265
kiranvvkk, can you ping the domain controller server?
If not make sure the Windows firewall and any other software firewalls you may have installed on the server are temporarily disabled for testing purposes.
Also, it is possible with a Windows VPN ( I assume you are using a Windows VPN ?) to make a connection, but not be able to communicate if GRE packets are being blocked. On most small office routers this is "switched on" by choosing "enable PPTP pass-through". If unsure, provide the make and model of your modem and router and I can locate the specifics.-Rob
0
Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 1

Author Comment

by:kiranvvkk
ID: 16730310
Hi ron
Thax for your reply,

Sorry for replying late

I can ping my DC, when i connect torough  VPN.

I have formarded PPTP port (1723 on the router).

Just to let u know that i have installed CCProxy on my DC few days back, do you thing is that going to affect in any way.

I am using Netgear WGR614 V4 router.

kiran

0
 
LVL 78

Expert Comment

by:Rob Williams
ID: 16730756
A proxy server can definitely block all sorts of traffic including VPNs, that is what they are for. It may well be configurable to allow the traffic but I am afraid I am not familiar with the product. Is it possible to disable it for testing? Then you could try to get the VPN working and then add and configure the proxy server. I am assuming the VPN and proxy server are on the same machine, if not it may not be configurable.
0
 
LVL 1

Author Comment

by:kiranvvkk
ID: 16731931
proxy servetr is installed on the DC, and vpn on different machine.
i disabled proxy, but still no luck.
0
 
LVL 78

Expert Comment

by:Rob Williams
ID: 16734469
Does the VPN connection go directly to the VPN server, or does it connect though the DC/Proxy server? If the latter it may not like the extra hop.
0
 
LVL 1

Author Comment

by:kiranvvkk
ID: 16738212
VPN directly goes to the VPN server, not to the DC/proxy
0
 
LVL 78

Accepted Solution

by:
Rob Williams earned 500 total points
ID: 16738866
Reading the Netgear site I suspect I have found the problem. According to the link below the WGR614 does  not support VPN pass through. Making a basic connection is sometimes possible, as it uses basic TCP/IP. However, for data to pass, it requires GRE the PPTP encryption protocol, to pass. If the router is not configured for that or capable of PPTP pass-trough, the VPN cannot be made to work. I suspect you will need to look at another model of router.
http://kbserver.netgear.com/inquira/default.asp?ui_mode=answer&prior_transaction_id=96347&action_code=5&highlight_info=16777369,60,76&turl=http%3A%2F%2Fkbserver.netgear.com%2Fkb_web_files%2FN101592.asp&answer_id=27741982#__highlight

If considering a new router you might want to consider a true VPN router rather than one with VPN pas-through capabilities. This will use IPSec which is more secure, and requires no port forwarding. Netgear have several available such as the FSV318.
--Rob
0
 
LVL 1

Author Comment

by:kiranvvkk
ID: 16740183
thax a lot rob.
kiran
0
 
LVL 78

Expert Comment

by:Rob Williams
ID: 16741513
Thanks kiran. Sorry after all that the outcome wasn't better.
--Rob
0

Featured Post

A Cyber Security RX to Protect Your Organization

Join us on December 13th for a webinar to learn how medical providers can defend against malware with a cyber security "Rx" that supports a healthy technology adoption plan for every healthcare organization.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Like many others, when I created a Windows 2008 RRAS VPN server, I connected via PPTP, and still do, but there are problems that can arise from solely using PPTP.  One particular problem was that the CFO of the company used a Virgin Broadband Wirele…
Juniper VPN devices are a popular alternative to using Cisco products. Last year I needed to set up an international site-to-site VPN over the Internet, but the client had high security requirements -- FIPS 140. What and Why of FIPS 140 Federa…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
Suggested Courses

840 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question