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Accessing a remote network

Posted on 2009-07-07
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Last Modified: 2013-11-25
Have our office with Windows 2003 Server Standard. Our remote office currently has 1 pc (XP Professional) and made a VPN from their TZ 180 to our office Sonicwall 2040 - currently enabled. Remote pc can not connect to network with message "A domain controller for the domain XYZ could not be contacted. Ensure that the domain name is typed correctly"

What am I missing?
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Question by:renniscom
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by:Datedman
ID: 24800015
What subnet are you on and what subnet is the remote office?  I usually do this server-to-server or remotemachine-to-server and am not familiar with these devices but likely you need to set a route from one subnet to the other.

If you are indeed on different subnets, then the machine(s) you need to communicate with on the other subnet also need to have a route set to get back to yours.

This is much simpler if you just VPN from the client directly to a Windows Server RRAS if you're just doing one machine IMO, but should be able to make it work this way.
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by:Datedman
ID: 24800025
Oh and in case I am reading this wrong...can you ping a server in your office by IP from the remote office?  If so it's probably DNS. :)
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by:renniscom
ID: 24800133
Yes, I can ping the server and the firewall from the remote office. Do they both have to be on the same subnet?
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by:Datedman
ID: 24800165
OK if you can ping by NAME then the machine should be able to log on.  You're able to ping by IP but not name?  If that's the case, need to be able to resolve the name so you could use a HOSTS file entry if you only need to see the server...or add the server IP to your DNS on the remote machine.
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by:renniscom
ID: 24800197
I am able to ping by ip address but not by name. How would I go about adding the server IP to the  remote machine's DNS?

I truly appreciate your help with this
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Datedman earned 500 total points
ID: 24800291
OK if you just need to access one machine (say, the server) on the other network you can start/run
notepad \windows\system32\driver\etc\hosts

...and add
x.x.x.x  FQDN

So for instance, 192.168.1.190 yourservername.yourdomainname.yourdomainsuffix

OR, you can go to Control Panel/Network and rightclick the LAN connect on XP machine, then Properties and go to TCP/IP and hit properties and tell it to use manual DNS and put in the one it's using now (from IPCONFIG /ALL that you run first from a CMD window--or if it's already manual move the primary to secondary) as a secondary and the DNS server you have at the office as primary.)

OR...if something is giving the remote machine DNS information/IP etc. thru DHCP--would that be the TZ180?  Whatever it may be you can add the IP of the DNS server at the office (DC probably) there and reboot the remote XP.
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by:renniscom
ID: 24800373
Thank you so much. I will try this and advise accordingly. Once again, I appreciate all your help with this.
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by:renniscom
ID: 24803917
It worked! I added the dns info from the remote server to the remote office xp machine and we are in business! Excellent!

Once again, I appreciate your help and your detailed responses to all my questions!
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by:Datedman
ID: 24803932
I live to serve. *bows*
:)
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