Detailed steps to solve slow SSH login in Linux system

We did not close a service when installing the Linux system. As a result, when logging in to SSH, we had to wait for a while after entering the user name before entering the password. The following solutions can be summarized to solve this problem.

Modify the following two places in sshd_config and restart ssh.

# vi /etc/ssh/sshd_config
GSSAPIAuthentication no
UseDNS no

Restart ssh

# systemctl restart sshd

The above can be solved perfectly.

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