change ssh port in ubuntu
vi /etc/ssh/sshd_config
port 1221
sudo systemctl restart ssh
sudo systemctl daemon-reload
sudo systemctl restart ssh.socket
root@vmproc:/home/ubuntu# netstat -plunt | grep 22
tcp 0 0 0.0.0.0:1221 0.0.0.0:* LISTEN 1/init
tcp6 0 0 :::1221 :::* LISTEN 1/init
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