Linux ssh enable remote connections

Enable remote ssh connection

• Ssh service set up and boot

systemctl start sshd.service
systemctl enable sshd.service

• Edit the file/etc/ssh/sshd_config

PermitRootLogin yes  # 允许root远程登录

• Close DNS verification

UseDNS no
GSSAPIAuthentication no

Note

• If DNS is not closed, could lead to remote connection is slow.