Solved

VPN No network provider accepted given path PLEASE HELP

Posted on 2006-11-30
14
274 Views
Last Modified: 2011-09-20
Hi Experts

Any help appreciated.

I have 2 win2k3 servers at different locations

I connect server A to server B over internet VPN

Port forward 1723 on linksys router on server B

connects - authenticates - logs in no problem at all

Server B is a DHCP server to incoming connections.

I can use VNC to connect to server B using a lan IP 192.168.1.100

BUT I cannot access any of the network shares on server B

I tried DMZ very quickly and with no luck then turned it off again.

I can VNC backward and forward between both server a and b so I am guessing that the TCP Protocol is getting through ok.

I can ping no problem at all

any ideas??

Thanks very much.
Nik
0
Comment
Question by:nikdonovanau
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 8
  • 6
14 Comments
 
LVL 77

Expert Comment

by:Rob Williams
ID: 18045415
Do both networks use the same 192.168.1.x subnet? If the "network shares" are located on other computers/servers ate site B, you will not be able to connect with the subnets being the same.
0
 
LVL 1

Author Comment

by:nikdonovanau
ID: 18049234
Server A uses 192.168.1.100 and server B uses 192.168.0.1
Will I have to change one of them?
0
 
LVL 77

Expert Comment

by:Rob Williams
ID: 18049653
No that is fine, if you are using a subnet mask of 255.255.255.0 at both sites. However, a mask of 255.255.0.0 will cause problems with those IP's.
0
Independent Software Vendors: 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 77

Accepted Solution

by:
Rob Williams earned 500 total points
ID: 18049661
I missed the bottom where you mentioned you can ping. It may be a name resolution issue. Can you connect to a share by IP such as  \\192.168.100.123\ShareName  ?
0
 
LVL 1

Author Comment

by:nikdonovanau
ID: 18049718
Thanks for that, When I try to connect to \\192.168.1.100\share I get the error 'no network provider acc...'
0
 
LVL 77

Expert Comment

by:Rob Williams
ID: 18050082
Odd error for that problem. Do you get an error number with it such as 67 system error?
I assume that share is available from the local network and has been tested as OK?
The share is actually on the VPN server 192.168.1.100 ? Not on another system and the server has 2 NIC's ? Though that should work, with 2 NIC and other devices (may have to tweak), just try the VPN server for now as a test.
Are there any software firewalls on the server. They can be configured to allow local traffic only.
What kind of hardware firewall is on site B ?
0
 
LVL 77

Expert Comment

by:Rob Williams
ID: 18050101
Try mapping a drive, but with user credentials, at a command line enter:
net  use  z:  \\192.168.1.100\ShareName  password  user:/username@domainname.abc
(note "user" is not a variable)
Then try to connect to Z:
Apparently it is possible to get that error if you are logged in with different credentials, though it will usually ask you for them.
0
 
LVL 1

Author Comment

by:nikdonovanau
ID: 18089641
Thanks RobWill. Sorry for the delay. I have tried that and got a error 67. firewall setup is:
 Linksys ADSL 2 Router with http & mail ports open and forward to server -> D-Link VPN Router (in Linksys DMZ) forward vpn to server -> server with no software firewall.
The strange thing is I can ping 'server' and it resolves to 192.168.1.100 and I get 0% packet loss.
I can even VNC direct by typing 'server' in the connection box.

Thanks again for you help thus far.
0
 
LVL 77

Expert Comment

by:Rob Williams
ID: 18094634
Do I understand correctly you have a D-Link router in series with a Linksys router ? VPN's specifically the GRE protocol does not like multiple NAT (network Address Translation) devices such as 2 routers. Often the basic connection can be made, but completion of the "handshaking" cannot take place, allowing you to access resources.
Perhaps you can elaborate on the hardware and subnets used at Site B.
0
 
LVL 1

Author Comment

by:nikdonovanau
ID: 18110474
Thanks for that - the connection logs in very quickly - the D-LINK VPN Router is in the DMZ of the Linksys router and forwards VPN to the server. When I first set the VPN (before the dlink) up I went as far as placing the server in the DMZ and got the same problem. What I might do is try to connect 2 pc's together instead of the 2 servers. It has to be one of the servers not allowing browsing?
0
 
LVL 77

Expert Comment

by:Rob Williams
ID: 18115327
Odd, I am stumped.
Only suggest I have is there have been 2 posts lately where users could only connect to some resources via VPN\. Disabling/un-installing RRAS and re-installing in the exact same fashion, repaired the issues. Seems routing may get "messed up" when configured. However in your case you can ping the system to which you want to connect so I am doubtful. Almost sounds like a firewall rule with an exception that allows local file and print access, but not from other networks/subnets.
0
 
LVL 1

Author Comment

by:nikdonovanau
ID: 18118077
thanks for all the help guys - PC to PC connection seems to work ok so there is a problem somewhere with the server blocking ports or wins or tcp is messed up somewhere. I think the easiest way from here would be to reinstall.
0
 
LVL 1

Author Comment

by:nikdonovanau
ID: 18118089
your solution works fine when connecting direct to the PC - thanks for the workaround

Nik.
0
 
LVL 77

Expert Comment

by:Rob Williams
ID: 18118173
Thanks Nik, good luck with it.
--Rob
0

Featured Post

Enroll in May's Course of the Month

May’s Course of the Month is now available! Experts Exchange’s Premium Members and Team Accounts have access to a complimentary course each month as part of their membership—an extra way to increase training and boost professional development.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
cradle point vpn to sonicwall 5 139
2012 r2 branch office DNS 2 73
VPN Connection WIndows 10 5 86
IPSec firewall rules 1 37
How to set-up an On Demand, IPSec, Site to SIte, VPN from a Draytek Vigor Router to a Cyberoam UTM Appliance. A concise guide to the settings required on both devices
I recently attended Cisco Live! in Las Vegas, a conference that boasted over 28,000 techies in attendance, and a week of hands-on learning hosted by a solid partner with which Concerto goes to market.  Every year, Cisco displays cutting-edge technol…
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…

732 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