Middlebury

Difference between revisions of "Troubleshooting VPN"

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Juniper Networks, our current VPN provider, offers a [http://kb.juniper.net/kb/documents/public/resolution_path/J_visio_kb9090.htm VPN troubleshooting flowchart] and [http://kb.juniper.net/InfoCenter/index?page=content&id=KB9090 installation troubleshooting guide] that may be useful to users and technicians.
 
Juniper Networks, our current VPN provider, offers a [http://kb.juniper.net/kb/documents/public/resolution_path/J_visio_kb9090.htm VPN troubleshooting flowchart] and [http://kb.juniper.net/InfoCenter/index?page=content&id=KB9090 installation troubleshooting guide] that may be useful to users and technicians.
 
== Cannot access sites blocked by an internet provider  ==
 
 
The VPN software used by Middlebury College only routes traffic to and from the College's servers. Therefore, it cannot help you if you are trying to access a site that is blocked by your internet provider or censored by a government entity.
 
  
 
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Revision as of 16:53, 24 April 2014

Listed here are a few tips on how to get VPN to work for you.

Problems with installing the VPN client

  1. When following the instructions for configuring VPN please use an account that has administrative privileges.
  2. Remove old VPN programs:
    - On a PC, open Control Panel, open Add/Remove programs. In the list of programs, highlight any entry containing the words "Cisco VPN" and click Remove. Repeat the procedure for any entry containing the words "Juniper Network Connect".
    - On a Mac, to remove the old Cisco VPN client, please follow the instructions on this page Uninstalling the Cisco VPN Client. To remove an old version of the Juniper VPN software, follow the instructions on this page: Manually Remove Network Connect in Mac OS X.

    More detailed instructions for removing the Cisco VPN client from a Mac or a PC are available at Uninstalling Cisco VPN.

Problems with establishing a VPN connection using the VPN client

Verify That You Have An Internet Connection

Try accessing a site that doesn't require VPN to ensure that your Internet connection is indeed active.

Try Disabling Local Firewalls

You might have a firewall program running on your computer that should be disabled such as, Windows Firewall (included with Windows XP Service Pack 2), Zone Alarm, etc. When you are trying to connect, if you are prompted that the VPN Client is trying to access the Internet, be sure to "Allow" or "Unblock".

Opt-out of Domain Helper Services

Many ISPs have domain helper services that redirect traffic, for a variety of purposes. Occasionaly, this can cause problems with VPN. Contact your ISP to determine if and how you can opt-out of Domain Helper Services. For example, Comcast has an opt-out page here: https://dns-opt-out.comcast.net

Troubleshooting Flowchart

Juniper Networks, our current VPN provider, offers a VPN troubleshooting flowchart and installation troubleshooting guide that may be useful to users and technicians.

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