Please make sure DNS is enabled for the VPN connection and correctly configured. If that works, the problem has to do with DNS resolution. If you are using a host name, please try once using its IP address instead. Are you trying to connect to the destination device using a host name? The destination device can be anything from a normal computer, to a server, to a network printer.ġ. In this FAQ we will be using destination device as a generic term for the device you are trying to connect to. This FAQ will help you to find out what is causing the problem in your specific situation. There are a number of possible causes for such a behavior. The only value that isn't exchanged and cannot be checked in advanced is the Pre-Shared Key (PSK). As all other values have just been exchanged and have been verified by both sides to be correct (so these cannot cause a different hash, not unless either side has a terrible bug). This hash is calculated out of values exchanged between the client and the gateway and the Pre-Shared Key. On the other hand, Hash Mismatch actually means that the hash your gateway calculated doesn't match the hash that VPN Tracker calculated (the two hashes are simply not matching). This would suggest that the client and gateway could not agree on common crypto settings. If the Hashing algorithm chosen is actually wrong, then you would receive an error that would say "No Proposal Chosen" rather than a "Hash Mismatch" error. However, this is not due to choosing an incorrect "Hashing" algorithm for Phase 1. When you get the "Hash Mismatch" error, the Hash algorithm is being rejected. Hash Mismatch usually means that the Pre-Shared Key (PSK) being used is wrong. If you are trying to establish a VPN connection in VPN Tracker and you are getting a "Hash Mismatch" error, here is what you need to know:
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