Disable SSH CBC Ciphers

Reference:

HOW-TO Disable CBC Ciphers and weak MAC Algorithms in Unix / Linux

修改這兩個檔案
/etc/ssh/ssh_config
/etc/ssh/sshd_config

#disable CBC 2021.6.21
Ciphers aes128-ctr,aes192-ctr,aes256-ctr
MACs hmac-sha1,umac-64@openssh.com,hmac-ripemd160

restart sshd

systemctl restart sshd