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Tools

Top 5 Security Tools I Use Weekly

Cybersecurity tools are useful, but the important part is understanding what the tool is doing and how to interpret the results. These are five tools and tool categories I use often while learning cybersecurity and IT fundamentals.

1. Nmap

Nmap is a network scanning tool used to discover hosts, ports, services, and sometimes operating system information. It is commonly used by network administrators, security analysts, and penetration testers.

I use Nmap in authorized labs to understand open ports and exposed services. For example, if a system has port 22 open, it may be running SSH. If it has port 80 or 443 open, it may be serving a website.

Example authorized lab command: 

nmap -sV -sC 192.168.1.10

This command checks service versions and runs default scripts. I only use scans on systems I own or have permission to test.

2. Wireshark

Wireshark is a packet analysis tool. It helps inspect network traffic and understand how protocols communicate. It is useful for learning DNS, TCP, HTTP, TLS, and other network behavior.

Wireshark helped me understand that network activity is not abstract. Every website visit, DNS query, and connection creates traffic that can be inspected in a lab environment.

Common things I look for in Wireshark include:

  • DNS queries
  • HTTP requests
  • TCP handshakes
  • Unusual destination IPs
  • Repeated connection attempts

3. Burp Suite Community Edition

Burp Suite is a web security testing tool. It can intercept browser requests and help analyze how web applications send data between the client and server.

I use Burp Suite in safe labs to better understand authentication, cookies, headers, parameters, and web application behavior. It is especially useful when learning about OWASP Top 10 topics.

Important areas Burp helps me study include:

  • HTTP requests and responses
  • Cookies and session tokens
  • Input parameters
  • Authentication flows
  • Basic web vulnerability concepts

4. DNS Lookup Tools

DNS tools are useful for both IT troubleshooting and cybersecurity analysis. They help check records such as A, MX, NS, TXT, SPF, DKIM, and DMARC.

DNS lookups can answer questions like:

  • Where does this domain point?
  • What mail servers handle email for this domain?
  • Does this domain have SPF, DKIM, or DMARC?
  • Which nameservers control this domain?

I also built DNS and email security tools on my own tools website to practice these concepts.

5. Browser Developer Tools

Browser developer tools are underrated. They help inspect HTML, CSS, JavaScript, network requests, cookies, local storage, headers, and console errors.

For web security learning, browser tools are useful because they show how websites actually behave in the browser. They also help debug portfolio projects, tools, and frontend security issues.

I use browser tools to check:

  • Network requests
  • Response headers
  • Console errors
  • Loaded scripts
  • Cookies and storage
  • Mobile responsiveness

Tool Safety Reminder

Security tools should be used responsibly. Some tools can affect systems if used without permission. I use scanning and testing tools only in authorized labs, personal environments, or platforms designed for practice.

Security Takeaway

Tools are important, but understanding the output is more important. My goal is not just to run commands, but to understand what the results mean and how they apply to real IT and cybersecurity work.