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Site-to-site VPN on Domain Controllers

Posted on 2008-06-22
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Last Modified: 2010-04-07
Earlier I asked a question about geographically distributed domain controllers:
http://www.experts-exchange.com/Networking/Protocols/DNS/Q_23506611.html#a21843736

After the question closed KCTS posted a comment regarding the potential usefulness of "site to site VPN." I would like to know the typical uses for site-to-site VPN, especially in the scenario I described earlier.

I am guessing this is a means of assuring secure connectivity between two servers without exposing their ports to the open Internet. It will help if someone can give me a refresher course on the means by which VPN does its magic.  

It will help if someone can supply me with links regarding how to set up site-to-site VPN on servers. Finally, if there are common mistakes to avoid, please let me know what they are.

Thanks so much.

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Question by:kennethfine
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6 Comments
 
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Expert Comment

by:KCTS
ID: 21843802
If your routers support hardware VPN themselves (some do - some  don't), it would be worth using that in my opinion, if not then you can set-up Windows to provide the VPN. There are some articles on this at
http://technet.microsoft.com/en-gb/network/bb545442.aspx
and a discussion at
http://www.microsoft.com/technet/community/chats/trans/windowsNET/wnet0107.mspx
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Author Comment

by:kennethfine
ID: 21843830
I have ordered this:
http://www.buy.com/prod/netgear-prosafe-dual-wan-gigabit-vpn-firewall-4-x-10-100-1000base-t/q/loc/101/205877562.html

It is a firewall device. I believe this offers the hardware VPN capabilities you're describing, yes?
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Author Comment

by:kennethfine
ID: 21843843
hmmm although one thing I'm contemplating is that this VPN functionality will need to be on both ends of the connection, and I don't have two of these gadgets. Is this compliant with a standard? In other words, if I have an in-hardware VPN implementation on one end and a windows-provided VPN on the other will it play nice?
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Netscaler Common Configuration How To guides

If you use NetScaler you will want to see these guides. The NetScaler How To Guides show administrators how to get NetScaler up and configured by providing instructions for common scenarios and some not so common ones.

 
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Accepted Solution

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KCTS earned 500 total points
ID: 21843845
I'm not familiar with this product, but it would seem to offer hardware VPN and it would make sense to use it - It you have one at each site, then connecting them should be straight forward.
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Author Comment

by:kennethfine
ID: 21843850
What if I have windows-provided VPN on one end and hardware on another? do they adhere to a compatible standard? or?
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Expert Comment

by:KCTS
ID: 21843871
In theory yes...
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