led the SPA authentication message, is transmitted to the server in a single UDP datagram. This technique provides strong authentication and is the default operation mode in Aldaba.
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<B>--pk</B> (Port Knocking Mode)
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This option tells Aldaba Client to run in PK mode. Like SPA, Port Knocking lets users request access to a given port. However, the authentication message is transmitted stealthily, dividing it, and encoding each part in the headers of a TCP SYN packet. Port Knocki