Dear All,
I am Irsath Ahamed working in Dubai. I have doubt about configuring Site to Site VPN network in ISA 2004. My confusion is, is it necessary to have ISA server in both location remote and main office to configure Site to Site VPN.
Here I will detaily explain you my criteria and please help me to solve this issue.
Our company is doing retail business and we have showrooms around UAE. As we are going to implement ERP solution we are connected all the showroom to main office through VPN Network.
In Main office I am running with 2 Windows 2003 R2 server, One as File server and another one as ISA server using as a gateway. And I have installed Sonicwall NSA 2400 for the VPN network.
In the branch office I have maximum of 2 or 3 system only. So there I have installed Sonicwall TZ240 and ADSL router only.
After I configured both VPN Firewalls the like between the firewalls successfully connected.
My problem is If I use Sonicwall Firewall as a Gateway in main office, I can able to ping the branch office computers. If I make ISA as a gateway I cant able to ping the branch office computer even I configured the Site to Site VPN Network, Created Network policy and Firewall Policy.
I am getting the reply as:
Negotiating IP Security.
I would appreciate your help.
