Re: Created new OVPN server based on old, getting strange error message when connecting

tincantech via Openvpn-users <[email protected]> Sun, 30 Mar 2025 02:00:36 +0000
Newsgroups gmane.network.openvpn.user
Message-ID <n5FDbAuWQiMiAnhkQ2HH_cQkPVXqTTnE8WVCfOVseJVxUJNifa2jBoBTMDMAL_XZFL0Dw7ftHSwmIsQwYyGhiYmGDj-PFfigvuyPVceRpZM=@protonmail.com>
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First, thank you David, for your help.

Also, see below for how Easy-RSA can help, however you choose to
deploy your VPN.


For OpenVPN peer-fingerprint mode:

Please note, Easy-RSA 3.2.2 also has commands:
`self-sign-server` and `self-sign-client`

These will build a server or client cert/key pair that is not signed
by a CA key and can be used in OpenVPN peer-fingerprint mode.

Easy-RSA also writes the certificate fingerprint to the inline file.


For OpenVPN normal CA mode:

And finally, Easy-RSA (On Linux) writes the decimal value of the
certificate serial number to the inline file.  That decimal can be
used for the OpenVPN option --crl-verify, when using the 'dir' flag.

The OpenVPN manual says:
If the optional dir flag is specified, enable a different mode where
the crl-verify is pointed at a directory containing files named as
revoked serial numbers (the files may be empty, the contents are never read).
If a client requests a connection, where the client certificate serial number
(decimal string) is the name of a file present in the directory, it will be
rejected.


Regards

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