Have you ever faced login delays when you tried to connect to the Linux systems, if yes this is happening due to reverse DNS look-up query that is been made to DNS Server.
We can fix this issue as mentioned below steps:
1) Take /etc/ssh/sshd_config backup
options single-request-reopen 4) Restart ssh daemon
# service sshd restart
Sometimes adding the client's net address to the server's /etc/hosts can fix this issue which is an alternative method.
We can fix this issue as mentioned below steps:
1) Take /etc/ssh/sshd_config backup
# cp -p /etc/ssh/sshd_config /etc/ssh/sshd_config.`date '+%m-%d-%Y_%H:%M:%S'`
2) Edit /etc/ssh/sshd_config on sshd Server
vi /etc/ssh/sshd_config
And add this DNS option to the file:
UseDNS no
3) Now add the following line to your /etc/resolv.confAnd add this DNS option to the file:
options single-request-reopen 4) Restart ssh daemon
# service sshd restart
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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