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  The Nmap tool. Nmap is a powerful open-source network scanner that's widely used for network discovery and security auditing. It allows you to discover hosts and services on a computer network, thus creating a map of the network #!/bin/bash # Check if nmap is installed if ! command -v nmap &> /dev/null; then echo "Please install nmap to use this script." exit 1 fi # Check for correct usage if [ $# -ne 1 ]; then echo "Usage: $0 <IP_Address>" exit 1 fi # Retrieve IP address from command line argument ip_address= $1 # Perform port scan using nmap echo "Scanning ports for $ip_address ..." nmap_output=$(nmap -p- --open $ip_address ) # Check if any open ports found if [[ $nmap_output == * "0 hosts up" * ]]; then echo "No hosts found at $ip_address ." exit 1 fi # Extract open ports open_ports=$( echo " $nmap_output " | grep "^ *[0-9]" | awk

  When discussing cloud technology, we must focus on how to protect against threats and vulnerabilities. This includes best practices and information related to AWS. Identity and Access Management (IAM): Implement the principle of least privilege, granting only the permissions necessary for users and services to perform their tasks. Use IAM roles for EC2 instances, Lambda functions, and other AWS resources instead of long-term access keys. Enable multi-factor authentication (MFA) for enhanced account security. Network Security: Use Virtual Private Cloud (VPC) to create isolated network environments. Utilize Security Groups and Network Access Control Lists (NACLs) to control inbound and outbound traffic. Implement AWS Web Application Firewall (WAF) to protect web applications from common exploits. Data Encryption: Encrypt data at rest using AWS Key Management Service (KMS) or Server-Side Encryption (SSE) for services like S3, EBS, and RDS. Implement SSL/TLS for data in transit to ensure