add ssh-keygen.sh and ssh-enhancer.sh

shell/ssh-enhancer.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+
+if [ "$#" -ne 1 ]; then
+    echo "Usage: sudo bash $0 <port>"
+    exit 1
+fi
+
+port=$1
+
+# Check if the port is a number
+if ! [[ "$port" =~ ^[0-9]+$ ]]; then
+    echo "Error: Port must be a number."
+    exit 1
+fi
+
+# Create a new sshd_config file with 99- prefix in /etc/ssh/sshd_config.d/ directory
+echo -e "Port $port\nPasswordAuthentication no" | sudo tee /etc/ssh/sshd_config.d/99-custom_ssh_port.conf > /dev/null
+
+# Restart SSH service to apply changes
+sudo systemctl restart sshd
+
+echo "SSH port changed to $port and password authentication disabled."

shell/ssh-keygen.sh

@@ -0,0 +1 @@
+ssh-keygen -t rsa -b 4096