Frequently Asked Questions
Some users are experiencing connectivity issues with their SonicWall VPN, while others can connect successfully using the same VPN configuration. This is not an authentication problem, but once the connection is established, the VPN becomes unusable.
Certain SonicWall releases have known issues with DHCP IP assignment for clients, which can result in duplicate IP address assignments. To troubleshoot this, try the following:
1. Connect to the VPN with the computer experiencing the connection problem.
2. Note its assigned client IP address.
3. Ping this IP address from within your LAN.
4. Disconnect the VPN on the problematic computer. You will likely observe that the ping continues, indicating that another device is using this IP address.
Troubleshooting Steps:
1. Identify the computer that is using the duplicate IP address. Often, a computer within the LAN is already using an IP address that falls within the DHCP range of the SonicWall.
2. If step 1 does not resolve the issue, restart the SonicWall.