Hey, I'm new here and just started a job a local business in my city. I am an engineer here and IT is not what is in my job description but I like to get to know stuff and have some idea about networking in general. So that made me curious when the IT staff here mentioned me an issue they had been having.
So this organization has had a problem with their network for months and no matter how much they tried it's still not fixed. The issue can be simply stated like this, the company's internal network is perfectly accessible through the LAN network inside the company building. The internal network and servers are also accessible via a wireless network in the building but for this after connecting to the access point, a VPN connection is required to access internal resources.
The problem arises when somebody wants to access the internal network outside the company building, in short not using the company's internet connection. No matter what ISP or network, the VPN connection just simply refuses to connect on any other network. In windows, after checking the event viewer the problem shows up as error 806 or 807 from the Ras Client.
Till now the fixes that we've tried are checking the Juniper router for forwarding port 1723, PPTP forwarding and GRE enable. That didn't fix anything. It also has a security policy for untrusted sources to trusted ones which have all of these rules enabled. I'm not the IT admin so I don't have access to any of the equipment and just stating what all I know.
Any chance the problem would be on Verizon's side?
Thanks for your help people.
The organization network diagram is attached if that helps. The check-mark means the VPN is accessible through the wireless network but not through the wired one if from outside the company network. So the issue is got to be in something in the red box right?
BTW the VPN server does respond to pings from outside the company network and ISP.