Cannot Connect to Exchange via SonicWall Site-to-Site VPN
Posted on 2010-11-16
I am setting up a Site-to-Site VPN between two SonicWall appliances and have hit a minor road block. The main SonicWall is an NSA 2400 and is located at our corporate office with a Static Public IP. The remote SonicWall is a TZ 100 and is located in a branch office with a Dynamic Public IP. Both devices have been configured in Aggressive Mode.
Here is a summary of the configurations:
Corporate Office NSA 2400
Public IP: 22.214.171.124
Lan IP: 10.10.1.1/24
Our Exchange Server is 10.10.1.2
Branch Office TZ 100
Public IP: Dynamic
Lan IP: 10.10.3.1/24
I have configured the Corporate SonicWall with an Address Object for the Branch Office and vice versa for the Branch SonicWall. I have also made sure the VPN Policies have the correct Device ID's.
The VPN Tunnel shows that it is established on both SonicWall's and I am able to ping any of the corporate computers from the Branch Office using the IP Addresses. However, I am unable to ping any of the Corporate computers from the Branch Office using the computer names and I cannot ping any of the computers in the Branch Office from the Corporate Office. So basically I have one-way connectivity. I think this is the reason why I am unable to connect to Exchange from the Branch Office.
Any clues as to why I cannot ping from the Corporate Office or connect to Exchange?
Thank you in advance!