The purpose of a CA in your case is to avoid a MITM attack where *another* server pretends to be your VPN Gateway.
Your client is willingly supplying username and password and by doing so compromises your VPN account.
In other words:
Your OpenVPN client verifies the signature of the server cert to make sure it is talking to the *right* server.
To verify the signature it needs the issueing CA.
If you are concerned about CA expiration, you are free to give it any lifetime you want :)
Your client is willingly supplying username and password and by doing so compromises your VPN account.
In other words:
Your OpenVPN client verifies the signature of the server cert to make sure it is talking to the *right* server.
To verify the signature it needs the issueing CA.
If you are concerned about CA expiration, you are free to give it any lifetime you want :)
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