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Windows SBS VPN access local recources

Posted on 2012-03-30
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Last Modified: 2012-04-19
Hi there,

i have a Windows SBS 2008 standard network. One remote site with 10 clients is connected over VPN to the SBS server.

The problem i have is, if the VPN fails the clients on the remote network cant even access local shares and the local MYSQL express server. I think it is because they cant authenticate with the domain controller.

My question is, is it possible (without having an RODC) to allow in case that the VPN fails access to the local resources?
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Question by:r_i_c_o
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Rob Williams earned 500 total points
ID: 37791278
When the VPN fails they should still be able to log onto their machines using cached credentials, and as a result they should also be able to access local resources, however if DNS is properly configured they  cannot resolve DNS names without the VPN.  Can they access a resource using the IP such as \\192.168.123.123\Share1 ?  This would verify it is a DNS issue and not an AD/authentication issue.  If that is the case you could make use of LMHosts and Hosts files (former for NetBIOS names and latter for DNS names).
https://msmvps.com/blogs/robwill/archive/2008/05/10/lmhosts-and-hosts-files.aspx

The correct solution though, especially with 10 users, is a local DNS server.  It can even be an old 2003 server.
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by:r_i_c_o
ID: 37804498
Thanks Rob for your fast response. I added the computer with the local MSSQL database to the host file on each computer. It seams fine when the VPN only fails for a short time.

Do you know if there is a way to change the frequency of user authentication or extend the time this is valid?

Thanks again for your help.
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by:Rob Williams
ID: 37808861
Hosts files are valid indefinately, but the question is why is the VPN failing.  That should be a rare occurance with a site to site VPN.
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by:r_i_c_o
ID: 37868629
Thanks Rob,  the VPN is is failing as the modem on the server site sometimes freezes. I will change the hardware to get it a bit more stable. Thanks for your advise.
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by:Rob Williams
ID: 37868635
Glad to hear you were able to isolate the problem.
Thanks r_i_c_o
Cheers!
--Rob
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