Increase SoftEther RADIUS timeout to 60 seconds for 2FA/MFA

Modify the source code and compile it yourself

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src\Cedar\Radius.h

//#define RADIUS_RETRY_INTERVAL 500 // Retransmission interval
//#define RADIUS_RETRY_TIMEOUT (10 * 1000) // Time-out period

#define RADIUS_RETRY_INTERVAL 60000 // Retransmission interval
#define RADIUS_RETRY_TIMEOUT (60 * 1000) // Time-out period

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src\Cedar\Cedar.h

Auto Renew Let's Encrypt Certificate for SoftEther

After build up the SoftEther VPN https://youtu.be/Y1F4PJOsWF8

You can manually Import the Certificate

Or try to make it automatically.

Place Cert in C:\Cert\ and write a TXT file (C:\Cert\SoftEtherVPNCertBatch.txt) with the following command: