Update Section_04/main.sh

Section_04/main.sh

@@ -0,0 +1,28 @@
+#!/bin/bash
+
+IP_ADDRESS=""
+ssh "root@${IP_ADDRESS}"
+
+apt update
+apt install nano -y
+
+# Create new non-root user
+USERNAME=""
+useradd -m -s /bin/bash -G sudo ${USERNAME}
+passwd ${USERNAME}
+
+su ${USERNAME}
+mkdir ~/.ssh
+touch ~/.ssh/authorized_keys
+# LOCAL: cat .ssh/id_rsa.pub
+nano ~/.ssh/authorized_keys
+ssh-keygen -t rsa
+
+# Change default SSH configs
+sudo nano /etc/ssh/sshd_config
+
+# Port 50683
+# PermitRootLogin no
+# PasswordAuthentication no
+
+sudo systemctl restart sshd