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I am authenticated but I can't see network resources when I VPN in

Posted on 2004-09-23
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Last Modified: 2013-12-07
I have a cable modem followed by a router with a static IP.  Behind the router are four computers.  A desktop, two laptops and a server.  All are connected equllay to the router.  The server only has one NIC.  The server is running 2003 and the other three computers have XP Pro.

I have setup a VPN using RAS.  I can log in remotely and it always authenticates me and the connection stays open.  I can see my domain but I can't see the computers or the shared resources on my network.  I'm sure it must be something simple.  I'm new to all this but I know my way around so if you need more information just ask.

Any suggestions on what I might try?
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Question by:Todd_Anderson
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9 Comments
 
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Expert Comment

by:Douglasfur
ID: 12137733
Does your remote user have permission to accesss shared network resources? You may need to set the remote user up to have said permissions either in the Active Directory on your server if you are using that, or in individual accounts on each machine. If AD, the remote user needs to be a part of the GPO with the shared resources.

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Author Comment

by:Todd_Anderson
ID: 12137797
I am using Active Directory.  I believe the permissions are setup correctly.  What does GPO stand for?
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Expert Comment

by:Douglasfur
ID: 12137826
Group Policy Object.
hmmm...
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Expert Comment

by:Douglasfur
ID: 12137842
a quote, "Group Policy Object. Group Policies let you define settings for groups of users and computers to simplify the management of numerous objects. Groups can contain users, computers, and other groups."
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Expert Comment

by:Douglasfur
ID: 12137881
The net is that the user account that you are using to get in needs to have permission to access your shared resources.
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Author Comment

by:Todd_Anderson
ID: 12138064
I think that I may have just figured out my primary problem.  Tell me if this makes sense.

My internal network was 192.168.1.x.  This is the standard for Linksys routers.  All the other places that I have been trying to VPN in from use the same since they are all Linksys routers.  When I was logged in remotely and did an IPCONFIG everything, internal and external, was 192.168.1.x.  The subnet for both was 255.255.255.0.  Wouldn't that confuse the routers?  I switched my internal network to 192.168.75.x and now when I VPN in I can see the resources inside my network.

Like I said, I am just learning this stuff so tell me if I am making up a solution to fit my problem!
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Accepted Solution

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Douglasfur earned 500 total points
ID: 12138162
When you login remotely, whatever you IP is internally doesn't go out past the router. Once you are "outside" or your router, your IP address is the external IP of the router. Not a 192.168.x.x but a true routable IP like 209.144.xxx.xxx. So I'm not sure why it should have confused the other router. ...not that expert, though I bet someone around here could explain it. If they do, I'd love to know.

Either way, you seem to have solved it yourself. You may be able to get the points refunded.

glad it's working. If you ever need someone to help you figure it out by yourself again, look me up. <(;-))

douglasfur
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Author Comment

by:Todd_Anderson
ID: 12146899
Since you are the only one that answered my question you get the points!  Sometimes it helps just to talk over the problem with someone else.

I've talked with some other Network Admins and they agree with you that my change should not have made a difference.  So far our best guess is that the Linksys router that I am using has some type of glitch.
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LVL 1

Expert Comment

by:Douglasfur
ID: 12146923
Thanks Todd. That's very nice of you.

You situation is a mystery for sure. I'll keep an eye out for that in the future and if I find anything, I'll post it.

thanks again,

df
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