Openvpn tls key negotiation failed

Openvpn tls key negotiation failed

Fix tls key negotiation failure issue with proxy.sh openvpn

This leads me to believe that there is a misbehaving NAT system somewhere between the client and the server, one with very short-lived state table entries, that is changing the source port number it applies to the client’s formed stream, causing the server to believe that two short-lived communications are in progress instead of one continuous one.
Since such devices usually only do this with UDP, I recommend that you double-check that you’re using UDP and then try TCP instead. You’ve already done this and discovered that it solves the problem. The next move is to find the misbehaving NAT computer, smack it with a club hammer, and substitute it with one that doesn’t make the cardinal error of believing that all UDP communications are ephemeral; however, you’ve stated that you’re fine with switching to TCP as a solution, so the problem is resolved.
Since the VPN on our pfSense firewall had been installed on the LAN interface rather than the WAN interface by accident, the exported config was set to try to bind to the firewall’s LAN IP address, which would never function because the client was on a different LAN.

Openvpn tls error: tls key negotiation failed

217.xxx.xxx.xxx:29229 Local Options String (VER=V4): ‘V4,dev-type tun,link-mtu 1569,tun-mtu 1500,proto UDPv4,cipher AES-128-CBC,auth SHA256,keysize 128,key-method 2,tls-server’ 2020-04-17T08:27:19.998+02:00 openvpn-VPN KUNZE[759]: 2
openvpn-VPN KUNZE[759]: 217.xxx.xxx.xxx:29229 2020-04-17T08:27:19.998+02:00 openvpn-VPN KUNZE[759]: 217.xxx.xxx.xxx:29229 ‘V4,dev-type tun,link-mtu 1569,tun-mtu 1500,proto UDPv4,cipher AES-128-CBC,auth SHA256,keysize 128,key-method 2,tls-client’ is the expected Remote Options String (VER=V4). ‘
217.xxx.xxx.xxx:29226 Local Options String (VER=V4): ‘V4,dev-type tun,link-mtu 1569,tun-mtu 1500,proto UDPv4,cipher AES-128-CBC,auth SHA256,keysize 128,key-method 2,tls-server’ 2020-04-17T08:28:24.925+02:00 openvpn-VPN KUNZE[759]: 2
openvpn-VPN KUNZE[759]: 217.xxx.xxx.xxx:29226 2020-04-17T08:28:24.925+02:00 openvpn-VPN KUNZE[759]: 217.xxx.xxx.xxx:29226 ‘V4,dev-type tun,link-mtu 1569,tun-mtu 1500,proto UDPv4,cipher AES-128-CBC,auth SHA256,keysize 128,key-method 2,tls-client’ is the expected Remote Options String (VER=V4).
2020-04-17T08:29:30.553+02:00; 2020-04-17T08:29:30.553+02:00; 2020-04-17T08 217.xxx.xxx.xxx:29227 openvpn-VPN KUNZE[759]: 217.xxx.xxx.xxx:29227 String of Local Options (VER=V4): ‘V4,dev-type tun,link-mtu 1569,tun-mtu 1500,proto UDPv4,cipher AES-128-CBC,auth SHA256,keysize 128,key-method 2,tls-server’ ‘V4,dev-type tun,link-mtu 1569,tun-mtu 1500,proto UDPv4,cipher AES-128-CBC,auth SHA256,keysize 128,key-method

Devops & sysadmins: openvpn: tls error: tls key

My configuration consists of a Plusnet Hub One router that is directly connected to the internet and has a static public IP address. The LEDE router is then placed behind the Hub One (everything that I can switch off on the Hub One to pass on all traffic to the LEDE, I think I have done). The internet connection from LAN devices is stable. I already have port forwards in place that allow me to access internal devices from the outside. On the Hub Router, I’ve also forwarded UDP 1194.
Yes, I’ve tried both port forwarding and configuring a DMZ with no luck. I am aware of the Hub One that is running LEDE. I borrowed a friend’s BT HH5, which he had purchased already converted from eBay. That was set up, but it was underpowered – OpenVPN client speeds were down by around 60% to 70%.
Otherwise, I might have converted my Hub One, but my soldering skills aren’t quite up to the task. To be fair, the Hub One has been working admirably as is; otherwise, I was considering buying an OpenReach modem. Is it still possible that the double NAT is causing problems with the OpenVPN server?

[solved] how to fix tls error problem (100% working

When I try to sign up for Cyberghost using OpenVPN, I get the following error message since 3 days. (And, yes, I am aware that Cyberghost is unquestionably not the Easter candy; this year, I will be using another VPN.) CG’s website has quickly become “unusable”).
‘V4,dev-type tun,link-mtu 1574,tun-mtu 1500,proto UDPv4,comp-lzo,mtu-dynamic,cipher AES-256-CBC,auth SHA256,keysize 256,key-method 2,tls-client’, Fri Oct 25 18:05:42 2019 us=663111 Local Options String (VER=V4): ‘V4,dev-type tun,link-mtu 1574
Expected Remote Options String (VER=V4) for Fri Oct 25 18:05:42 2019 us=663111: ‘V4,dev-type tun,link-mtu 1574,tun-mtu 1500,proto UDPv4,comp-lzo,mtu-dynamic,cipher AES-256-CBC,auth SHA256,keysize 256,key-method 2,tls-server’

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