Key Exchange Methods
• diffie-hellman-group1-sha1
• diffie-hellman-group14-sha1
• diffie-hellman-group-exchange-sha1
• diffie-hellman-group-exchange-sha256
• diffie-hellman-group1-sha1
• diffie-hellman-group14-sha1
• diffie-hellman-group-exchange-sha1
• diffie-hellman-group-exchange-sha256