Solved

Windows 7 + OpenVPN + Non Admin Users

Posted on 2010-09-08
8
1,862 Views
Last Modified: 2012-05-10
Hi,

Just wondering if anyone has a solution to this problem.

The users where openvpn has to be installed, are not administrators in any way of their machines, not even local admins.

The users cannot be any kind of admin otherwise PCI + other compliance is compromised.

Is there any way for the user to be able to run the VPN, and have the routes added, without being an admin ?

Thanks,

Leon
0
Comment
Question by:gjdonkeh
  • 4
  • 4
8 Comments
 
LVL 69

Expert Comment

by:Qlemo
ID: 33631979
If you can
* install OpenVPN as a service (requires admin privs once)
* install the TUN/TAP adapter (requires admin privs once)
* assign "start service" priv to the users
it should work, just by starting the OpenVPN service manually. If the latter isn't possible at all, the only way is to let OpenVPN Service run automatically all the time.
0
 
LVL 3

Author Comment

by:gjdonkeh
ID: 33635370
Thanks - I'll give this a go.

Are you able to provide info on how to assign start service privileges to users ?

Thanks,

Leon
0
 
LVL 3

Author Comment

by:gjdonkeh
ID: 33635467
Hi,

Also - running as a service does not appear to allow the user to enter there username/password that are required to connect.

Regards,

Leon
0
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.

 
LVL 69

Expert Comment

by:Qlemo
ID: 33636926
That's true, you can't provide username and password. Do you really need to do that interactively, or just for identification of the PC? Is it ok to put it into the config file? Else you would need to ask for user and password, and send that over to the OpenVPN process using the telnet management feature of OpenVPN. That again requires a batch command and an external tool called netcat (or a telnet connection which asks for the credentials - but I'm not positive about this option).
0
 
LVL 3

Author Comment

by:gjdonkeh
ID: 33637522
The requirement to enter the username/password on each connection is necessary and cannot be stored in a text file.

Security is a must unfortunately.

Regards,

Leon
0
 
LVL 69

Accepted Solution

by:
Qlemo earned 500 total points
ID: 33640849
Ok, that is getting more complicated then.

-----------------

To be able to start a service, users need the privilege assigned by
subinacl /SERVICE "OpenVPNService" /GRANT=MyUser=TO
TO is Start and Stop
 
Download subinacl (part of the Windows Resource kit)
Options for /SERVICE: http://www.eventlogblog.com/blog/2007/11/setting-service-permissions-wi.html.

-----------------

To ask for credentials, you need following settings in each config file:
management 127.0.0.1 65500management-query-passwords
Then download netcat (best thru http://joncraton.org/files/nc111nt.zip, you will only need the nc.exe file from that zip).

As soon as OpenVPN is started with above config, you can do (in a batch file):
@echo offset /P usr=Username: set /P pwd=Password: (echo username Auth "%usr%"& echo password Auth "%pwd%"& echo quit) | nc -i 1 127.0.0.1 65500
65500 is an arbitrary port number I chose by random. You can use other port numbers, of course, but you need to change them in both the config and the nc.exe command line.

The management interface of OpenVPN can be used to provide data else given manually, to stop the connection, and many more.

If you want to start the service manually, begin the batch file above with
sc start OpenVPN
(before the set /P's). Since the user needs some time to enter the credentials, that should be sufficient for OpenVPN to do the necessary inits and start communicating with the OpenVPN server, and the management commands come just in time.

0
 
LVL 3

Author Closing Comment

by:gjdonkeh
ID: 33927793
While your method would most likely work, it isn't really practical in my scenario.

Thanks for your help.
0
 
LVL 69

Expert Comment

by:Qlemo
ID: 33933382
Why? You can automate it without much ado, all steps contained in my description. That's the only way how you can get around the permission issue.
0

Featured Post

Simplifying Server Workload Migrations

This use case outlines the migration challenges that organizations face and how the Acronis AnyData Engine supports physical-to-physical (P2P), physical-to-virtual (P2V), virtual to physical (V2P), and cross-virtual (V2V) migration scenarios to address these challenges.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
NAT Public IP through a VPN 17 68
Comma and period key both show comma symbol. 1 29
Windows 7 and Windows 10 offline sync 3 34
Eliminating an obsolete notification 5 45
If you get continual lockouts after changing your Active Directory password, there are several possible reasons.  Two of the most common are using other devices to access your email and stored passwords in the credential manager of windows.
When you try to share a printer , you may receive one of the following error messages. Error message when you use the Add Printer Wizard to share a printer: Windows could not share your printer. Operation could not be completed (Error 0x000006…
This Micro Tutorial will give you basic overview of the control panel section on Windows 7. It will depth in Network and Internet, Hardware and Sound, etc. This will be demonstrated using Windows 7 operating system.
The Task Scheduler is a powerful tool that is built into Windows. It allows you to schedule tasks (actions) on a recurring basis, such as hourly, daily, weekly, monthly, at log on, at startup, on idle, etc. This video Micro Tutorial is a brief intro…

861 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