Open VPN Error

Hello,

I get the error message "TLS Error: cannot locate HMAC in incoming packet from[AF_INET]" when trying to establish an OPEN VPN connection. What am I doing wrong? What should this error message tell me?

I'm trying to build the VPN from a synology to the PFSENSE OPENVPN-Server.

What approaches are there that I can examine? I followed the instructions exactly…

Thank you very much.

johnpoz

Without your config and your client config.. Did you want us to look into our magic balls?

Guessing I would say you have something wrong did you create your key, do you have the direction correct..

Really need to see your configs of you want us to help.

Hi,

of course. If you can't say anything more about the error message without the client configuration, I will be provide it. Maybe someone knows the error and knows where it is;)

I have created a CA, then a server certificate for the CA (validity 3650 days, key length 2048 and digest sha256). Then I created a user and password. Insert the user into appropriate groups and then create a user certificate (same settings as above) and export.

VPN server configuration:
Server mode: Remote access (SSL/TLS + User Auth)
Protocol: UDP on IPv4
Adapter type: do - Layer 3 Tunnel Mode
Interface: WAN
Local Port: 1194
TLS configuration: check (use TLS key)
TLS key Usage type: TLS authentication
Certificate authority: The created CA
Diffie Hellmann Parameter length: 2048 bit
ECDH curve: Use default value
Encryption algorithm: AES-256-CFB
Activate NCP: check
NCP algorithm: AES-256-GCM and AES-128-GCM
Auth hash value algorithm: SHA256
Hardware cryptography: none
Certificate depth: One (Client & Server)
Strict user-CN compliance: none

At the client I simply entered the data and imported the user certificate.

Thank you:)

johnpoz

Entered what data?

So your using a tls authentication mode - so the user needs also ta.key, etc.

So your client would need 3 the CA, the User and the ta.key… You imported those all into your nas?