Middlebury

Difference between revisions of "Troubleshooting VPN"

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Listed here are just a few tips on how to get [[VPN]] to work for you.  
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Listed here are a few tips on how to get [[VPN]] to work for you.  
  
Problems with installing the VPN client<br>
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== Problems with installing the VPN client<br> ==
  
*The University of Akron has some excellent troubleshooting tips for installing the VPN client: http://support.uakron.edu/wiki/index.php/Cisco_VPN_Client<br>
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#When following the instructions for [[Recommended_VPN|configuring VPN]] please use an account that has administrative privileges.
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#Remove old VPN programs:<br>- 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".<br>- On a Mac, to remove the old Cisco VPN client, please follow the instructions on this page&nbsp;[http://www.cisco.com/en/US/products/sw/secursw/ps2308/products_user_guide_chapter09186a008015cffe.html#1003396 Uninstalling the Cisco VPN Client]. To remove an old version of the Juniper VPN software, follow the instructions on this page: [http://kb.juniper.net/InfoCenter/index?page=content&id=KB16265&cat=SSL_VPN&actp=LIST Manually Remove Network Connect in Mac OS X].
  
'''Verify That You Have An Internet Connection:'''
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== Problems with establishing a VPN connection using the VPN client  ==
  
*In order to use the VPN client you must have a working Internet connection.
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=== '''Verify That You Have An Internet Connection''' ===
  
<br> '''Try Switching The Transport Protocol: '''
 
  
#In the Cisco VPN Client select the Middlebury College connection entry (it should be highlighted).
 
#Click Modify.
 
#Select the Transport tab.
 
#Select IPSec over UDP.
 
#Click Save.
 
#Select Middlebury College and click Connect.
 
  
If that doesn't work, try following the instructions above, but instead of selecting IPSec over UDP, uncheck Enable Transparent Tunneling, and try connecting again.
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=== '''Try Disabling Local Firewalls''' ===
  
<br> '''Try Disabling Local Firewalls:'''
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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.&nbsp;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".<br>
  
Many Internet Service Providers use firewalls in their cable/dsl modems. You can open up these firewalls to connect to the Middlebury VPN Server (140.233.5.200). If you contact your Internet Service Providers technical support to open your local firewalls to allow incoming and outgoing connections to 140.233.5.200.
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=== '''Opt-out of Domain Helper Services''' ===
  
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.  
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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<br>
  
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".  
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== Cannot access sites blocked by an internet provider ==
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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.  
  
<br> '''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/<br>
 
  
 
[[Category:KB]] [[Category:Network]] [[Category:Remote_Access]] [[Category:VPN]]
 
[[Category:KB]] [[Category:Network]] [[Category:Remote_Access]] [[Category:VPN]]
 
<br>
 

Revision as of 11:16, 27 September 2011

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.

Problems with establishing a VPN connection using the VPN client

Verify That You Have An Internet Connection

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

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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