We've installed a VPN server (vpn.nmt.edu) to permit TCC users to:
Note that the TCC "test net" and our connections in Speare 14 are the only connections allowed to the VPN server from on campus. That is to say, VPN can not be used from on-campus unless you're on the TCC "test net" or in Speare 14. (On campus users already have a Tech IP, so letting them use the VPN would just waste our resources -- which makes me wonder why Speare 14 is an exception!)
To use this service you must have a valid TCC username and password.
For information on configuring Linux (Fedora), MS Windows (2000, or XP), and Macintosh OSs (Jaguar, Panther, Tiger) for use with our VPN setup see the TCC Help System link on VPN.
After a review of VPN tickets Bryan Dean found that if there are problems using TCC's VPN the following should be checked.
From Camden Mullen, Fri Aug 31 13:35:25 2007
This ticket is an example of the VPN problems related to outside ISPs. Some ISPs, such as hotels and coffee shops do not seem to have their networks setup for PPTP and VPN, or they have crummy connectivity on their end. Some may restrict web access to a few ports such as port 80 for web and port 20 for ssh. I don't know the details of PPTP but I don't think it uses port 80. If a user tickets or calls in about not being able to access VPN, it would be a good idea to find out how they are connecting and where from. For MS Windows XP, asking the user to remake the VPN connection may help, but that solution may be hit or miss, depending on the computer and the system. We should have a simple check setup for the UCs to look at VPN, but most of the time it seems that the problems exist on the side of the outside ISP. Users should ask the ISP contact if they support PPTP or VPN. A note on the webpage about this problem might help.
From Dustin Graham, Fri Oct 31 14:05:12 2008
Subject: Re: TicketID#20081031081237
Our vpn protocol is pptp, defined by RFC 2637 (see RFC 2637. Multiple ports are necessary, and many networks do not route this traffic correctly. Hotel networks tend to be rather locked down, and are usual suspects. Wireless routers often ship with this functionality disabled as well.
Just to be complete, here are two related RFCs:
On Fri, 31 Oct 2008 13:22:44 -0600
Ray Piworunas wrote:
Ticket Description: Unable o use VPN last night or this morning.
I called Rob back and he said he was trying to connect from a hotel.
I am wondering if the VPN protocol is exercised before the password on login (to vpn.nmt.edu) is accepted. I was thinking that the hotel's service provider may be blocking the VPN protocol but Rob said his problem was that his login exchange would hang after he entered his password. He thought that even going just that far in the process would say the VPN protocol was being used. How about it?
NOTE: By TCC policy on supported software these instructions are unsupported. TCC only supports software which it is running on its clients, and then only at the same version and revision levels. (We are currently running MS Windows XP on our clients.)
From Joel Eidsath, Thu Feb 28 08:40:10 2008
Description: Have Window Vista live in Albuquerque, need to VPN to Tech
To set up a VPN connection in Microsoft (not Blackboard) Vista:
Network and Sharing Centerin the search box. Now click on the Network and Sharing Center icon that shows up from the search.
TCC VPN Connection(or whatever is easy for you to remember the connection by). Click Next.
If you have problems:
126.96.36.199as the Preferred DNS server (as per Dustin's note of 28 Feb 08:55 that internaldns0 is the preferred DNS for on-campus connections, including VPN) and
188.8.131.52as the Alternate DNS server.
From Michael Smith, Thu Feb 28 18:35:18 2008
Ok the steps are pretty much the same as above except this needs to be done:
This should work because I'm on the VPN. Thanks for all your help guys. Mike
From Steve, Fri Jan 7 13:49:31 2005
There is a MS Windows networking scenario that everyone should be aware of in order to help people troubleshoot their network connections. With the advent of VPN and wireless networking the way MS Windows ultimately makes a network connection has changed. Buried in the MS Windows OS is a table which includes a default gateway IP.
For more please see Ethernet, VPN, Wireless, and OS IP Gateway Table (under the MS Windows section).