Determine if user is accessing through Internet or

dreamer_0244 · November 29th, 2007, 01:15 AM

Hi! I have a web application which can be accesses through the Internet and Intranet.

I created a log-in for the users of the system, but how can the program determine whether the user is accessing the program through the Internet or the Intranet?

Any advices? Thanks in advance!

planoie · November 29th, 2007, 05:42 AM

Can you define a IP range for intranet users?
Can you identify a windows domain identity for intranet users?

-Peter

dreamer_0244 · December 7th, 2007, 02:48 AM

No I can't. Is there a way that i can program to check without having to know those IP range?

planoie · December 7th, 2007, 08:41 AM

How are the users connected to the intranet? Even if they are connected through the internet, they are likely connecting into your system via a VPN (otherwise, we can't really call it an inTRAnet). Therefore, there must be some way to identify inTRA versus inTER-net users. Generally speaking, any IP like this (192.168.*.*) or this (10.*.*.*) is an "internal" address whether it's on a LAN or WAN.

The only other way I can see doing this is to enable Integrated Windows Authentication as well as anonymous access to your web application. If the user is connecting with IE on Windows and they are logged in with an account that is discoverable on the same active directory domain that the web server is on then you may be able to match their identify. However, I think this would regardless of how they are connecting.

I guess the next question really is:
Are you concerned with determining WHO is connecting or HOW they are connecting?

-Peter

dreamer_0244 · December 9th, 2007, 09:14 PM

I'm more into how they are connecting...

This is the case...I have a login page...all users who will logged in through the intranet can access the website, but some users will be restricted to access the website if they are accessing through the internet....so I was thinking of determining whether they are accessing through the internet or intranet...

planoie · December 10th, 2007, 10:45 AM

Without being able to define an IP range to determine LAN/WAN versus the public internet I don't think you can do this. But as I stated before, I can't imagine that you wouldn't be able to determine some set of IPs that would discriminate between users.

-Peter