I'm having continuing trouble with a SonicWall VPN. Does anyone know where I can get a trouble-shooting protocol that can help me find the problem?
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To troubleshoot VPN issues use the following steps:
After getting your error messages, go to: Sonicwall's Knowledge base and enter in the error message in the search string. Usually the error messages are in all capitals, like: NO_PROPOSAL_CHOSEN.
In my experience, most of the problems come down to the setup of the VPN parameters not matching up between each end of the tunnel. Specifically the ID used for the local and peer IKE IDs. It is our practice to always use the SonicWALL Identifier as this is the most reliable.