【sshd】setting_ssh_banner.sh

#!/bin/bash
#
cat << _SSHCONFIG > /etc/ssh/ssh.banner
[-] welcome to the wonderland ...
[^]
  . ____         . ____
 /\\  ___ ‘\\     /\\  ____‘\ \\ \\  _  \\ \\    \\ \\ \\   \\/
  \\ \\ \\/\\ \\/     \\ \\ \   \\ \\  - /       \\ \\ \    \\ \\ \\          \\ \\ \     \\ \\ \\          \\ \\ \      \\ \\ \\          \\ \\ \\ __/\       \\ \\ \\          \\_\\/____/
        \\_\\/
[^] 
[^] ‘.‘: hard working now, take care!
_SSHCONFIG

sed -i s/^Banner/#Banner/ /etc/ssh/sshd_config 
sed -i /^#Banner/d /etc/ssh/sshd_config 
echo "Banner /etc/ssh/ssh.banner" >>/etc/ssh/sshd_config
service sshd reload

【sshd】setting_ssh_banner.sh