We can fix this issue as mentioned below:

Step 1: Take /etc/ssh/sshd_config backup
cp -p /etc/ssh/sshd_config /etc/ssh/sshd_config.`date ‘+%m-%d-%Y_%H:%M:%S’`

Step 2: Edit /etc/ssh/sshd_config on sshd server

vi /etc/ssh/sshd_config

And add this DNS option to the file:

UseDNS no

(OR)

Sometimes adding the client’s net address to the server’s /etc/hosts can fix this issue which is an alternative method.

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