Web Services vs VPN

Hi friends.

First english is not my primary language, then forgive any mistakes.
I recently have a discussion with a customer about this subject, Web Services vs VPN.
The customer have a central office with an Human Resources Management Application builted on DOS plataform. They have about 150 operations sites (they offers especialized workers to many companies) allocated on yours customers companies.
Montly they proccess all workers informations to produce the payment to workers as usual.
In the present scenario they use diferents types of comunications to send the informations about this workers (like hours worked, faults, incidents and etc) to the central office where employees must re-enter the informations in the Human Resources Management Application.
Some of this comunications methods used today are: Telephone, FAX, e-mail and postal service.
The objective here is to integrate all the sites with the central office application providing on-line data input and output.
We are thinking on web services technology and the great question came into...
"Using our exist network structure, can not we build vpn to all this sites ?"
and, in sequence...
"how are web services better to us against VPN".
I have a couple of points to offer to them. We are working on application lavel, not in network system level and son on.
But i want to see your positions about this subject and discuss this in this scenario.
Then, any comments will be good.
Thank you
7/30/2004 2:16:42 PM
asp.net.xml-web-services 7071 articles. 0 followers. Follow

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WebServices and VPNs are not alternative technologies to one another; rather, they are complementary. You deploy VPNs mostly for security reasons, and Webservices for the flexibility.
Tomas Restrepo [MVP]
8/1/2004 12:26:52 AM
Well, as you seems to be a beginner, I have written short article in WS, if you have a time, please spend on it, it might give some idea

Hope it helps!
weblog http://weblogs.asp.net/skoganti
8/1/2004 4:12:18 PM

Well, i think i dont use the words correctly.
My problem is:
I have a central legacy application for DOS in central office.
I must create a web front-end to input/output data from this application/database.
Im thinking in contruct a web service to handle the integration layer (im currently examining BizTalk 2004 too).
But my customer question me about VPN and access the main application by this way.
Im preparing me to argument with he about web services plataform (and/or BizTalk 2004) and its advantages over the VPN integration.
If someone have a point feel free to post here.
Thank you
8/3/2004 12:52:17 AM

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