Solved

Joining a Windows 2003 domains throught a site to site VPN

Posted on 2008-10-05
4
205 Views
Last Modified: 2010-03-17
I have jiust setup a site-to-site VPN using a Watchguard XCore 550 and a Watchguard Edge X10e.
Site A: Server/Domain Controller/DNS (static IP)
Site B: workstations with Win XP Pro (dynamic IP)

I have setup the PCs with the following network settings:
DNS 1: Ip of the Domain Controller

When I try to join the domain it returns a DNS error.

What should I do? I have tried to ping the dns using : servername.domain.local and it respons correctly.

Help me it's very urgent!
0
Comment
Question by:ssardella
  • 2
4 Comments
 

Author Comment

by:ssardella
ID: 22647200
I forgot:

Site A: 192.168.19.0/24
Site B: 192.168.21.0/24

I have added to the DNS server the A record of the workstations at site B and added the PRT records for that subnet..
0
 
LVL 4

Expert Comment

by:lscapa
ID: 22649425
It might be a MTU packet size issue. Whats the largest packet size you can ping through?
ping HOST -l 1472 -f
This will keep it from fragmenting the packet. You hopefully will see something like:
"Packet needs to be fragmented but DF set."
 
If so you'll need to reconfigure your routers to handle at least a 1500kb packet if not more.
0
 
LVL 3

Accepted Solution

by:
tismetoo earned 500 total points
ID: 22650430
Can you post the exact DNS error. Also when you are trying to connect to the domain, are you trying to resolve the Netbios name ie DOMAIN or the DNS name ie domain.local? Try to connect to the domain using the FQDN - domain.local as specified on the DNS server on your DC.

You also need other ports open between the 2 sites, other than DNS. Do you have policies blocking ports between the sites or is it an open link, allowing any traffic?
0
 

Author Comment

by:ssardella
ID: 22655262
I made it :)

I was just very tired and had not noticed that the firewall at the other end was blocking DNS requests...sorry guys...anyhow thanks for the help!
0

Featured Post

Is Your AD Toolbox Looking More Like a Toybox?

Managing Active Directory can get complicated.  Often, the native tools for managing AD are just not up to the task.  The largest Active Directory installations in the world have relied on one tool to manage their day-to-day administration tasks: Hyena. Start your trial today.

Question has a verified solution.

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

This script can help you clean up your user profile database by comparing profiles to Active Directory users in a particular OU, and removing the profiles that don't match.
This article shows how to deploy dynamic backgrounds to computers depending on the aspect ratio of display
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…

932 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

Need Help in Real-Time?

Connect with top rated Experts

21 Experts available now in Live!

Get 1:1 Help Now