By default, ssh and sshd are configured to allow using weak hashing
algorithms like MD5 and SHA1. They are also configured to use weak
encryption ciphers such as 3DES and CBC mode ciphers.
Configure ssh and sshd to use strong MAC and encryption ciphers by
default.
Strong MACs are hmac-sha2 (hmac-sha2-256, hmac-sha2-512)
Strong ciphers are aes128-ctr, aes192-ctr, aes256-ctr.
Signed-off-by: Chris Co <chrco@microsoft.com>
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