How to optimize SSH connection

by Posted on

There are 3 options

UseDNS no

GSSAPIAuthentication no

ignoreRhosts yes

In file /etc/nsswitch.conf，you can only modify the configuration from

“hosts: files mdns4_minimal [NOTFOUND=return] dns mdns4” to “hosts: files dns”，

This changes will stop mdns，and only use dns to reslove hostname；

Then you can restart ssh service.

/etc/init.d/sshd restart

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