Internal Wifi and VPN data access.

[ErikBlake]

So we have started having our field employees use iPads. They currently use explorer for ArcGIS to access our maps which have services that reside on our GIS server. When there in the field they need to "VPN" into our server to be able to get the services and also to have access to our engineer drawings that are hyperlink to our water and sewer utility. So far we have had pretty good success. However we are experiencing a situation where we are not able to get our services to draw when we are connected to our internal Wifi. But they show up just fine when "VPN" into our server. would a permissions issue in iis cause this to happen?
Erik

[RandallWilliams]

Hi Erik,

Can you elaborate a little bit more on the issue reported?

Like, when these failures occur are your users already on the internal network and attempting to VPN and reach the server?

I don't think that this is a permissions issue per-se, but it could be a configuration issue with the ArcGIS Server virtual directories. The best way I can think of to test would be to proxy the web traffic between your iPads and your GIS Server and see where the point of failure is. We typically do this using a free tool called 'Fiddler'.

Here's a blog post that explains the steps in detail...

[ErikBlake]

Randall
No. in order for them to VPN in they need to be off our internal network. So if they are in or near our building they will be connected to our internal network automatically via Wi-Fi. And then of course as they head out into the field they loose the internal network and they then are on 3G or 4G. etc. Then they are able to VPN into our network. And when they are sucessfully VPN in they can access evrything as if they were here at the office on our internal network. This part is working fine. The issue arises when we are connected to our internal network via Wi-Fi on the iPad at the office we can not get our services to show up in our map it just times out. However if we turn Wi-Fi off and disconnect from our internal network (while still at the office) and we become connected to 3G or 4G then VPN in we then are able to get access to our services.