VPN and Proxy Server
When you are working at home, there are two complementary services you can
use to leverage your UDelNet ID to gain access to resources.
allows you access to internal UD hosts with a private address, while the
proxy server allows you access to external Web servers with a public UD
Use one at a time but not both together.
VPN server allows
access to UDelNet with a private address
laptop is assigned an IP number from the pool available to your ISP. To
use the VPN server on the UDelNet private network, you must configure your
VPN client with the UD VPN server information, and every time you connect,
you must supply your UDelNet ID/password.
This connection establishes a
tunnel that is encrypted to keep the data private.
All connections to UD
hosts are relayed through the tunnel to the VPN server, and the UD host
sees the Private IP Number and grants you access, knowing your connection
is secure all the way back to your laptop.
When you connect to a
Non-UD host, the tunnel is not used, and you are connected directly to the
Host using your ISP IP number.
This is just as it would be if you were
not using the VPN client.
This is called split tunneling.
Server is always looking inward to UDelNet internal hosts; it never
connects to the outside on your behalf.
Proxy server allows a connection to a non-UD Web service
with a UD address
The university has agreements
with many non-UD Web services to give UD users access to their collections
This access is granted based on their service seeing a
connection from a UD IP number. If you connect directly from your home
laptop, the service will see your ISP IP number and either deny access or
request that you pay for the data.
The solution is to connect to the
non-UD Web server through the UDelNet proxy server. To use the proxy
server, you must supply your UDelNet ID/password, and all Web traffic is
relayed back to your laptop through the proxy server.
other hosts are done directly.
The proxy server can only connect to known
Web servers, and this is usually easiest to do through the library database service.
The proxy server always connects with a 128.175 UD IP number as required
by the non-UD Web services. Use this to gain access to the data from home
as if you were on campus.
Proxy servers do not work
Use the VPN server when you are connecting to an
internal UDelNet server and need a private 10.7 address.
Use a proxy
server when you are connecting to an outside Web host and need a public
128.175 IP address. You must disconnect the VPN server to use the proxy
server, and you should logout from the proxy server before you reconnect
to the VPN server. See VPN and Proxy servers
for a detailed description for using both from home.