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I'm configuring an OpenVPN version 2. The server is behind a router and I opened the port and created a rule to forward traffic on this port to the server.

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Where XX. XX is Juitsu ip of the client. So I understand from this that the client at least is able to arrive at the server, so there's no routing or firewall issues. Mon Mar 21 XX. This makes me think that, somewhere between client and server, there is a misbehaving NAT device, a device with very short-lived state table entries, which is changing the source Negotiation Jujitsu number that it applies Negotiation Jujitsu the client's established stream, causing the server to think that two short-lived communications are in progress, instead of one continuous one.

This you have done, and found that it fixes the problem. The next step Negotiation Jujitsu to identify the misbehaving NAT Negotiation Jujitsu, hit it with a club hammer, and replace it with one that doesn't make the cardinal mistake of assuming that all Continue reading communications are ephemeral; but you have indicated that you're happy with changing to TCP as a workaround, and so the matter is concluded. This is one of the most common error in setting up Openvpn and there Negotiattion a FAQ entry for this. I'm going to quote this here:. It's highly likely that any of these is causing the same problem in your case too. So just go through the list one by one to resolve it. I was getting TLS key negotiation timeouts like this.

But in my case I realised that the remote link was a local IP address. Getting a key negotiation timeout does not necessarily mean you've even managed to connect to anything. So at this stage it may still be worth checking you're actually connecting to the right place, and Negotiation Jujitsu are no firewall rules blocking the connection, etc. Particularly if your configuration has been automatically generated. Note that getting a login prompt does not mean that you're connectedsince OpenVPN asks for Negotiatiob credentials before trying to connect.

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Of course, this is one of a number of server-side misconfigurations that could occur, such as firewall rules, putting the wrong port number, intermixing TCP and UDP, etc. I had the same error and no advice helped, everything seemed to be fine: IPs, ports, firewall, everything. Gone insane for 2 hours.

LE: this solved my problem but it's not the best approach as per below comments. It helped me because I had different settings between the client and the server configs. Note that you can get a TLS key negotiation error, Negotiation Jujitsu successfully connecting to the OpenVPN server - or even successfully connecting to anything at all!

Negotiation Jujitsu may even get prompted for credentials first, but nothing outside your computer has actually asked for them. None of the solutions mentioned earlier worked. I also came across the TLS key negotiation failed to occur within 60 seconds problem.

From the official suggestion, as Diamant post, there must be something wrong in the network connection. However, neither the firewall nor the NAT cause the problem. Negotiation Jujitsu

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In my case, Negotiarion first checked the connection by nc -uvz xxx. The link is OK. So I Negotiation Jujitsu the running vpn clients from the largest ip to the hanging client, e. In conclusion, there is a chance leads to TLS key negotiation failed to occur within 60 seconds problem that multiple vpn clients within a LAN starting in a wrong sequence.

So simple! Negotiation Jujitsu up to join this community. The best answers are voted up and rise to the top.]