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Edit the Port of the configuration file:
vi /etc/ssh/sshd_config
Release port:
iptables -A INPUT -p tcp --dport 端口号-j ACCEPT
Save and restart the SSH service:
iptables-save > /etc/iptables.up.rules /etc/init.d/ssh restart
refer to
https://www.laozuo.org/14001.html
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